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____________________________ Name Comprehensive Biology Review This test will contain material from all of the previous six weeks. Remember to bring a pencil to the test and remember to study!!!!!!!!! 1st Nine Weeks Topics include: Study Skills Lab Safety Scientific Method/Embedded Inquiry Cells & Cellular Transport 1. What are the steps of the scientific method? 2. The problem is stated in the form of a _____-________. 3. Independent variable- 4. Dependent variable5. Homer thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (staple a set of papers). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, Homer counts how many stacks of stapled papers each group has made. Group A made 1,587 stacks and Group B made 2,113 stacks. a. Identify the control group: b. Independent variable: c. Dependent variable: d. What should Homer’s conclusion be? 6. Any microscope that has two or more lenses is a A. Multi-dimensional scope B. Multi-functional scope C. Complex scope D. Compound scope 7. The part of the microscope the ARROW is pointing to is called the A. Condenser lens B. Diaphragm C. Stage D. Base 8. This part of the microscope provides different powers of magnification. It is identified by the number? A. 6 B. 5 C. 2 D. 1 1 9. What is the total magnification used to view these onion cells through this microscope? A. 10x B. 40x C. 50x D. 400x 10. Identify major cell organelles, given a diagram. Function Control center and has nucleolus Organelle Respiration occurs here Photosynthesis occurs here Protein synthesis Rough or smooth; transports Packages, distributes, and stores Storage tank (very large in plants) 11. Which of the following would help you conclude the cell shown here is a plant cell? (may be more than one correct answer) A. Presence of chloroplasts B. Presence of Golgi bodies C. Rigid cell wall D. Large, central vacuole E. Absence of Rough ER 2 Distinguish between prokaryotic and eukaryotic cells. Things to remember: Prokaryotes: have no nucleus, have no organelles, they are single-celled. Eukaryotes: means true nucleus, they have a nucleus and organelles. Eukaryotes can be single or multi-celled. 12. Is the picture above representative of a prokaryote or a eukaryote? _________________ 13. Label the plant and animal cells below Type of Eukaryotic cell _____________ Type of Eukaryotic cell _____________ D and J ________________ H ________________ D ________________ A ________________ F ________________ C ________________ E ________________ I ________________ A ________________ F ________________ B ________________ E _______________ G ________________ K ________________ C ________________ B and G ________________ 3 Plant vs. Animal Cells Things to remember: Only plant cells have ____________ & ____________ Only animal cells have ___________ Plant cells have a single, large central ______ that is used for storage. An animal cell is typically in the shape of a ________, while a plant cell is shaped like a _________. Predict the movement of water and other molecules across selectively permeable membranes. __ _tonic=the cell is balanced (homeostasis); Water can move in and out of the cell at the same rate= NO NET MOVEMENT ___tonic= there is more water and less solute outside of the cell than inside the cell; water moves into the cell; the cell will swell/burst (in plants turgor pressure increases) ___tonic= there is less water and more solute inside the cell than outside the cell; water moves out_ of the cell; the cell will shrivel and wilt Label the pictures as hypotonic, hypertonic, or isotonic Water Water Water Water _____________ _______________ ______________ Water Is each cell in a hypo- iso- or hyper- tonic solution below? 4 Salt Compare and contrast active and passive transport. Hydrophilic(heads)-H2O loving / Hydrophobic(tails)-H2O fearing Passive transport does ________require energy (ATP); moves from an area of _______concentration to an area of ________concentration (“downhill”) 3 types of passive transport _____________>>particles move from higher to lower concentrations _____________>>water moves from higher to lower concentrations across a membrane. _____________>>particles from higher to lower concentrations using a channel/carrier protein Active transport _____ require energy (ATP); moves from an area of ____ concentration to an area of _____ concentration (“uphill”) 3 types of active transport: ______________>>moving particles into the cell using energy ______________>>moving particles out of the cell using energy ______________>>moving particles through a pump into or out through the cell membrane 14. Cells move material from areas of high concentration to areas of low concentration by the use of a. passive transport b. active transport c. endocytosis d. protein pumps 15. Label the pictures below (osmosis, facilitated diffusion, diffusion, active transport) Diagram A Diagram B Diagram C Water Salt Sugar OUT IN Homeostasis Homeostasis is the maintenance of the internal balance of the cell. The ____ ___________ controls homeostasis of a cell by regulating what flows in or out. Blood pressure and body temperature are 2 examples of homeostasis. Selective permeability is the property of the plasma (cell) membrane that allows it to control homeostasis. 16. Homeostasis helps organisms maintain proper balance or equilibrium. The structure that helps maintain that balance in a cell in all organisms a. cell wall b. plasma (cell) membrane c. chloroplast d. mitochondria 17. Which of the following is a good example of homeostasis in humans? a. human body shivering when it is cold outside b. someone sticking their finger down their throat to vomit c. someone using dandruff shampoo because of dry scalp d. spitting 5 2nd Nine Weeks Topics include: Macromolecules and Enzymes Cell Growth and Replication Mitosis REMEMBER: --How do you know what type of macromolecule you’re looking at? Follow this flow chart. Does the substance have C,H,O,N,P? No Yes Does it have a C,H,O,N? Yes Nucleic Acid No Protein Does it have a 1:2:1 ratio of Carbon, Hydrogen, Oxygen Yes No Carbohydrate Lipid Carbohydrates are made of ___________________________; Function: ____________________________. Lipids are made up of the monomers _____________ & __________; Function: __________________; these are _____________ in water; Proteins are made with _________ _________ (building blocks); Function: =_________________________; connected with __________ bonds. Nucleic Acids are made with _________________; Function: ______________________; 2 examples are ________ & _______; Enzymes are important proteins. Enzymes act as catalysts to speed up a chemical reaction by ___________________ the activation energy. --A _______________ is the molecule that binds to the enzyme and is acted on by it. --A _______________ is what is released by the enzyme at the end of the chemical reaction. --Most enzymes are named with ____ as the ending. --Enzymes are specific. The shape of the active site must match the shape of the substrate. --Enzyme are _____________. They are not consumed (used up) during the reaction. --Enzymes may quit working when not under optimal (ideal) conditions (ex. pH, temperature changes) due to denaturation (protein unfolding). 6 Cell Cycle & Mitosis Cell Cycle has 4 parts: G1 S G2 M (with cytokinesis) OR 5 parts: I P M A T --during interphase, the cell grows, copies DNA, makes organelles, and gets ready to divide; this is the “growth” period for the cell; G1 S G2; it is the longest phase --mitosis only involves BODY CELLS (also known as somatic cells) --a diploid (2n) cell contains 2 sets of chromosomes-one from mom and one from dad (46 chromosomes for humans); a haploid (n) cell contains 1 set of chromosomes (23 total for humans). --mitosis begins with 1 diploid cell and ends with 2 diploid cells (daughter cells are identical to each other and parent cell) --remember what happens in each phase of mitosis: PROPHASE: nuclear membrane breaks down (in animals 2 centrioles); chromosomes form; microtubules start to grow METAPHASE: sister chromatids (joined by centromere) move to the middle (equator/metaphase plate); spindle forms ANAPHASE: sister chromatids pull _________ and move to the poles TELOPHASE: cell starts to divide (cell plate=plant cells; cleavage furrow=animal cells); nuclear membrane reforms; chromosomes relax into chromatin Meiosis Meiosis is a type of cell division that occurs in _____ CELLS to form gametes. Meiosis begins with __ diploid cell (46 chromosomes for humans) and ends with 4 haploid cells (23 chromosomes in each cell for humans). The haploid cells that are made during meiosis are eggs in females and sperm in males Meiosis provides genetic variation in a population because ___________________ occurs during this process, bringing about new gene combinations There are two parts. Meiosis I and Meiosis II. Each with P M A T. 2nd six weeks sample questions: 1. Label each of the following molecules-carbohydrate (C), lipid (L), protein (P), or nucleic acid (NA) A_______ B_______ C_______ D________ 2. Fill in the following chart. Indicator Tests for Positive test Iodine A F Benedict's Solution B G Biurets Reagent C H Sudan III Brown Paper D E I J 7 3. How does the reduction in activation energy by an enzyme affect a chemical reaction? A. The products are not stable B. The reaction proceeds at a faster rate C. Less energy is gained from the reaction D. The reaction is less efficient when the enzyme is present 4. What is the role an enzyme plays in a chemical reaction? A. It increases the activation energy B. It slows down the chemical reaction C. It lowers the activation energy D. It is consumed by the reaction 5. Label A and B on the graph. A __________________ B __________________ Free Energy Progress of Reaction ------ 6. Which of the following organic molecules are passed from parent to offspring to determine the offspring’s traits? A. Lipids B. Nucleic acids C. Carbohydrates D. Proteins 7. In mitosis a human somatic (body) cell begins with 46 chromosomes. How many will the daughter cells have after mitosis? A. 92 B. 46 C. 23 D. 46 pairs 8. Which of the following stands for diploid? A. Dip B. 2x C. 2n D. n 9. TRUE or FALSE: Mitosis produces the same # of chromosomes in each daughter cell as the parent cell had. 10. Which of the following is the correct order of the cell cycle? A. G1 G2 S M Cytokinesis C. G1 S G2 M Cytokinesis B. G1 G2 M S Cytokinesis D. G1 M S G2 Cytokinesis 11. During which phase of mitosis does the cell plate in plants form or the cleavage furrow in animals form? A. Interphase B. Metaphase C. Prophase D. Telophase 8 1 12. Look at the pictures below. Write the name of the phase of mitosis below each picture: A B C D _________ __________ _________ __________ One more thing: Place the phases in order: ____________________ 13. If a cell has 46 chromosomes before it undergoes meiosis, how many chromosomes will each gamete have? A. 92 B. 46 C. 23 D. 13 14. Which process occurs during Prophase I of meiosis, and increases genetic diversity? A. Replication B. Crossing over C. Spindle formation D. Chromosomes condense 2nd Nine Weeks Topics (cont) include: Photosynthesis Cellular Respiration Remember Photosynthesis & Respiration EQUATIONS for PHOTOSYNTHESIS & RESPIRATION (Photosynthesis) 6CO2 + 6H2O + energy (Respiration) C6H12O6 + 6O2 C6H12O6 + 6O2 6CO2 + 6H2O + energy Photosynthesis ________ energy for plants & respiration ___________ energy for organisms The ____________ of photosynthesis (CO2 + H2O + energy) are the products of respiration The products of photosynthesis (O2 + C6H12O6) are the ____________ of respiration Photosynthesis occurs in plants or those organisms that contain chlorophyll Respiration occurs in ______ organisms Chloroplast = organelle of photosynthesis & mitochondria = organelle of respiration Aerobic = with _________ & anaerobic = without oxygen ATP transfers energy (break a phosphate-P to release energybecomes ADP) Steps of aerobic respiration are: 1st = Glycolysis makes 2 ATP 2nd = Krebs Cycle makes 2 ATP rd 3 = ETC makes 32 ATP =36 ATP TOTAL Steps of anaerobic respiration are: glycolysis followed by 1 of 2 pathways: 1. alcoholic fermentation (yeast) 2. lactic acid fermentation (muscles) = 2 ATP TOTAL 9 Diagram A Diagram B _______________________________________ 1. Label the following equations: 6CO2 + 6H2O + energy C6H12O6 + 6O2 ____________________________________ C6H12O6 + 6O2 ____________equation 6CO2 + 6H2O + energy ____________equation 2.Using the equations above, circle the reactants & underline the products: 3. Photosynthesis STORES energy, while respiration RELEASES energy. The products of one are the reactants of the other. If photosynthesis stops, then A. autotrophs could no longer store energy in food molecules B. heterotrophs would slowly run out of food, which would affect the rate of respiration and thus reduce the amount of energy being released C. neither heterotrophs nor autotrophs would survive D. all of the above CO2 ANIMALS heterotrophs carbon dioxide O2 oxygen PLANTS autotrophs 4. Using the diagram above, how does photosynthesis depend on respiration? A. animals must eat other animals in order for respiration to take place B. plants must carry out respiration in order to make food C. plants need respiration from animals in order for photosynthesis to take place D. animals need plants in order to produce their own food. 5. Which of the following is TRUE of the anaerobic process of respiration? A. occurs without the presence of oxygen; yields a net of 32 ATP molecules for each glucose molecule that is broken-down. B. occurs in the presence of oxygen; yields a net of 2 ATP molecules for each glucose molecule that is brokendown. C. occurs in the presence of oxygen; yields a net of 32 ATP molecules for each glucose molecule that is brokendown. D. occurs without the presence of oxygen; yields a net of 2 ATP molecules for each glucose molecule that is broken-down. 6. Which of the following shows the CORRECT order of the steps of aerobic respiration? A. Krebs CycleCalvin CycleETC B. Krebs CycleGlycolysisETC C. GlycolysisCalvin CycleETC D. GlycolysisKrebs CycleETC 10 7. Which of the following produces the largest amount of ATP? A. anaerobic respiration B. ETC C. aerobic respiration D. Krebs Cycle 8. Which statement best explains the role of meiosis in the production of sex cells? A. to produce cells with half the DNA of the original cell B. to produce cells that are genetically identical to each other C. to combine the DNA of two identical cells D. to combine the DNA of two different cells 9. If a cell has 46 chromosomes before it undergoes meiosis, how many chromosomes will each gamete have? A. 92 B. 46 C. 23 D. 13 10. The process above shows ADP + P + “energy” ATP A. ATP losing a P & energy being released B. ATP gaining a P & energy being stored C. O2 cycle D. dark reactions 3rd Nine Weeks Topics include: Genetics Punnet Square DNA Fingerprinting When working with Punnett squares you must remember the following terms: 1. Genotype means the _______ ________________-the letters! BB or Bb or bb 2. Phenotype means the ____________ outcome-the traits! Brown hair or black hair 3. Heterozygous = having ______________ alleles; the genotype would be Bb for example. 4. Homozygous = has _______________ alleles; the genotype would be BB or bb for example. 5. Hybrid = same as heterozygous; Bb for example. 6. Pure Dominant = same as homozygous for dominant traits; BB 7. Pure recessive = same as homozygous for recessive traits; bb Gregor Mendel (1822-1884) is the “Father of ____________________”. His studied ___________ and discovered what we now have termed Dominant(capital) traits versus recessive(lowercase) traits. He found that those traits that maskedout other traits were the dominant ones. The ones masked-out were recessive. This is known as ________________________. Mendel also founded two principles related to genetics: A. _______________________________, for any particular trait, the pair of alleles of each parent separate & only one allele passes from each parent on to an offspring. Which allele in a parent's pair of alleles is inherited is a matter of chance. We now know that this segregation of alleles occurs during the process of sex cell formation (i.e., meiosis). B. _______________________________, different pairs of alleles are passed to offspring independently of each other. The result is that new combinations of genes present in neither parent are possible. There are different modes/patterns of inheritance (“the exceptions to the complete dominance rule”). The different modes/patterns of inheritance are: 1. ________________________ = a NEW PHENOTYPE APPEARS-both alleles are expressed and combined-they blend together; red + white = pink 2. ________________________ = both alleles are equally expressed-each trait shows equally; black + white = black and white individual-BOTH SHOW EQUALLY! 11 3. ________________________ = more than 2 ALLELES FOR A TRAIT; fur color in rabbits, ABO blood 4. ________________________ = MANY GENES FOR 1 TRAIT; no Punnett square; ex. are height & skin color 5. _______________________ = these are traits that are linked to the SEX CHROMOSOMES-SPECIFICALLY THE X chromosome. These traits are either present or absent for males. These traits can be carried by females. BOTH OF THE FOLLOWING ARE COMPLETE DOMINANCE TYPE PROBLEMS! 1. Monohybrid Cross Example: T t T = tall pea plant t =short pea plant What is the chance that the offspring from this cross is tall? ___________% T T What are possible GENOTYPIC results for this cross? _____ _____ _____ t 2. Dihybrid Cross Example: Parents are: TtGg X TtGg TG Tg tG tg T = tall t = short TG G = green g = yellow Tall, Green = ____/16 Tall, yellow = ____/16 short, Green = ____/16 short, yellow = ____/16 Tg tG What are the chances that a pea plant will be Tall and Green? _____/16 tg DIFFERENT TYPES OF INHERTIANCE PATTERN PROBLEMS! 3. A cross between a red (RR) rose and a white (R’R’ or WW) rose produced plants with only pink (RR’ or RW) flowers. What is this pattern of inheritance? A. complete dominance B. incomplete dominance C. sex-linked D. co dominance 4. A black (BB) feathered chicken is crossed with a white (WW) feathered chicken. The results are shown below. What is the correct phenotype of this cross? B Phenotype is ________________________ W W 12 B 5. A woman who is heterozygous for A blood (IAi OR AO) has child with type O blood (ii OR OO). Can the father of this child have type AB blood (IAIB OR AB)? Yes or No (circle one) Need to know information about Pedigrees: Remember the following: Female, normal Male, normal Female, carrier Male, carrier-NOT POSSIBLE IN SEX-LINKED TRAITS Male, affected Female, affected 1. Genotype for a female is __________ & for a male is __________. 2. You receive ½ of your chromosomes from Mom & ½ from Dad. These pair together to form your______________________ chromosome pairs. 3. You have 22 pairs of _____________ chromosomes & 1 pair of ____ chromosomes. This gives you a total of 23 pairs or 46 chromosomes. 4. Sex-linked traits are typically found on the ____ chromosomes. Questions 6-9: Read the pedigree below and answer the following questions: N=normal n=colorblindness 6. Does this pedigree show a sex-linked trait? _________ 7. How many children were born in generation II? _____ 8. What is the genotype of the female in generation III? __________ 9. What is the genotype of the male in generation II? ____________ Need to know information about Genetic Disorders: A. B. C. D. Cystic Fibrosis= Autosomal recessive parents must either carry or have it to pass to offspring. Sickle Cell Anemia= Autosomal recessive parents must either carry or have it to pass to offspring. Tay-Sachs= Autosomal recessive parents must either carry or have it to pass to offspring. Huntingdon’s Disease= Autosomal Dominant If one parent has the disorder all children will get it. RULE: If ________ parents carry a recessive disorder, then there is always a ___% chance of an offspring having the disorder! 13 10. Sally has one brother and one sister. Her sister has the autosomal recessive disorder known as Cystic Fibrosis(CF). Neither Sally nor her parents have CF. (N = normal n = CF). Her parents genotype would be ____ X ____ What % chance is there that they have another child with CF? _______ Need to know information about Mutations: Mutations are a ____________ or ___________ in either the DNA sequence or the chromosome. Nondisjunction: Down’s Syndrome is an example! The failure of _______________ to separate during and after _______. The failure of ______________to segregate/separate during & after _______. This could result to a condition wherein the daughter cells have an abnormal # of chromosomes; one cell having too many chromosomes while other cell having none. On chromosomes there are 4 possible mutations: Mutation Deletion Insertion/Addition Description segment is removed segment is added in Inversion Translocation segment is flipped/rearranged a segment from 1 chromosome is added to a different chromosome In DNA/RNA there are 2 basic types of mutations: Mutation Description nucleotides are substituted Point nucleotides are removed *Frameshift deletion (Frameshift addition nucleotides are added in *Frameshift mutations can be much more damaging due to the fact that they cause change after the initial mutation. Point mutations only affect the codon on which the mutation occurs. Questions 11-14: Label the following mutations: Original Mutation 11. The picture to the left is an example of the chromosomal mutation known as ____________________ Mutated GGC CAG TCA GGA CCG original strand 12. What type of mutation is to the left? ___________________ GGC CAG TCC GGA CCG mutated strand 13. The picture to the left is an example of the chromosomal mutation known as __________. Original Mutation Mutated 14 Extra Note: When there is a mutation in the DNA strand, that mutation will affect how the RNA strand is made. If RNA is changed, then the amino acid made is changed and this could make the wrong protein! Need to know information about DNA/RNA: 1. DNA stands for _____________________ _________. 2. DNA has ____ strands made up of ________, ________________ & ____________ _______. 3. DNA has 4 N bases: A matches with ___ and G matches with ___. 4. DNA is a double helix. 5. DNA is made up of subunits called _________________ 6. DNA is referred to as our “blueprints for life”; it carries our ____________ 7. DNA is copied through a process called DNA __________________ 8. RNA stands for ________________ _______. 9. RNA has _____ strand. 10. RNA has 4 N bases: A matches with ___ and G matches with ___. 11. _____ makes RNA in a process called _______________________. 12. RNA makes ______________ in a process called translation; this is protein synthesis. 13. 3 types of RNA are: mRNA, rRNA, & tRNA State the function of: a.mRNA:___________________________________________________ b.rRNA:____________________________________________________ c. tRNA:____________________________________________________ 14. Give the DNA complement of the strand to the below: GGC TTC AAC GAT TAG _________________________ 15. Give the RNA complement of this strand? GGC TTC AAC GAT TAG _________________________ 16. Before a cell can divide, DNA must be ___________________. This occurs during Interphase, the period of growth for a cell. The basis of life is built on the ability of cells to replicate with identical blueprints for survival. 15 Label the following diagrams: mRNA tRNA 17. __________________ 18. ___________________ 19.______________________________ Ethics and Research A. Genetic engineering refers to the alteration of an organism’s genes for practical purposes. This includes cloning, creation of transgenic animals and plants, and the introduction of genes into an organism that confer some characteristic such as herbicide resistance. B. Cloning: a. DNA cloning the transfer of a DNA fragment of interest from one organism to a self-replicating genetic element such as a bacterial plasmid. b. Reproductive cloning is a technology used to generate an animal that has the same nuclear DNA as another currently or previously existing animal(Dolly). c. Therapeutic cloning also called "embryo cloning," is the production of human embryos for use in research(A lot of times this is a part of stem cell collection). C. A transgenic animal/plant is one that carries a foreign gene that has been deliberately inserted into its genome. D. Stem cells are distinguished from other cell types by two important characteristics: 1st: they are unspecialized cells capable of renewing themselves through cell division. 2nd: under certain experimental conditions, they can be induced to become tissue- or organ-specific cells with special functions. E. DNA Fingerprinting is a process by which scientists, specifically forensic scientists, analyze _______ to determine specific sequences & for comparing the ___________________ between organisms. When looking at either a DNA fingerprint sample like the one below or actual DNA sequences, check for similarities. 20. The sample to the right is from a crime scene. Which suspect needs to get a lawyer? ____________ 16 21. Which of the 2 species below are most closely related according to their DNA sequences? GGC TAT AAC GGC ACT GGC GGA CAC TCA GGC AAA CCC CAC CCA AGC GGC TTT AAC GGG ACT Species 1 Species 2 Species 3 Species 4 _____________________ 22. An RNA molecule was synthesized to form complementary base pairs with a DNA molecule. The sequence of the DNA was TAC GAC TCA. The RNA sequence should be _________________ 23. What type of chromosomal mutation is in the diagram below? __________________________ 24. In the diagram below, Part A shows the process of ___________; Part B shows ______________. Part A Part B 25. A DNA strand contains codons, which consist of a sequence of three nucleotides. Which BEST describes the importance of codons found in the sequence of DNA? A. They signal the start of mitotic cell division. B. They ensure proper replication of the Morse code. C. They are used to assemble amino acids for mitosis. D. They contain the code for messenger RNA. 26. Elle has type A blood. Her mother had type O blood. Elle marries Henry, who has type AB blood. What are the possible blood types of their first child? ______________ 27. What is an example of a polygenic trait? _________________________ 28. Which of the following is an example of codominance in genetic traits? A. a smooth-seeded pea plant & wrinkled-seeded pea plant produce smooth-seeded pea plants B. a white rabbit & a black rabbit produce a black & white rabbit C. a blue-eyed man & brown eyed woman produce a blue-eyed child D. a colorblind woman & a man with normal vision produce a colorblind son 17 29.____________________________ 30._________________________ #29. #30. Name the mutation for 31-35: TGA CGA ATT TGA GAA TT NORMAL MUTATION 31._____________________________ ABCDE ABBCDE Normal Mutation 32._____________________________ 33._____________________________ 34. In fruit flies, the gene for red eyes (R) is dominant and the gene for sepia eyes (r) is recessive. What are the possible combinations of genes (genotypes) in the offspring of two red-eyed heterozygous flies (Rr)? A. rr only B. RR only C. RR, Rr, and rr only D. Rr and rr only 35. A strand of mRNA containing the repeating sequence AAG AAG AAG AAG could code for which of the following amino acid sequences? A. lys–arg–glu–lys B. ser–ser–glu–glu C. lys–arg–lys–arg D. lys–lys–lys–lys 4th Nine Weeks Topics include: Ecology (Biomes, Symbiosis, Energy Pyramid, Succession, Population Changes, Curves) Evolution (Adaptation, natural Selection, Fossils, Classification) 1. 2. Biotic = nonliving; examples are rocks, water, temperature. ____= living; examples are insects, animals, plants. 3. List several factors that affect the size of a population. 18 4. 3 types of symbiosis ( “living together”): A. Commensalism = one benefits and the other is neither harmed nor helped (+, 0). B. ________________________= both are benefitted (+,+). C. ________________________= one is benefited and the other is harmed (+,-). 5. Producers_ : also known as autotrophs; can make their own food; EX= plants. 6. Consumers : also known as heterotrophs; can NOT make their own food; 3 types are herbivore, carnivore, omnivore; EX= lion, human. ___________ consumers= herbivore. 2nd order _ consumers= can be both carnivore & omnivore. ___________ consumers= can be both carnivore & omnivore. 7. ______________: also known as “recyclers”; those that breakdown dead organic matter; EX= mushrooms, bacteria. 8. Energy flow through a food chain goes as follows ______% passed on to each trophic level. 90% is lost as HEAT or used by the organism. Grass → Insects 18,579 ________ → Snake _____ → Owl 9. “Terrestrial” means land biome; “Aquatic” means water biome. Biomes and some characteristics: ________________= permafrost; treeless; lots of snowfall. Taiga ________ = (coniferous forest or boreal); evergreens; some snow. ________________= significant rainfall; exotic plants and animals; shallow rooted plants. ________________= (deciduous); 4 seasons; hardwood/deciduous trees (lose leaves); TN. Grassland _____= large grazing animals; thick grass; very few trees; also known as savanna. Desert__________ = sparse plant life; nocturnal animals; extreme temperatures; little rainfall. 10. “Indigenous” means natural habitat (means animal/plant would be found in that environment). Tundra _ : lichens, polar bear. Deciduous Forest : oak tree, deer. ___________: pines, elk. _______________ : grass, buffalo. ___________: cactus, tortoise. Tropical Rainforest : exotic plants, toucan. 11. _____________ ____________ is succession that begins in an area that previously did not support life. 12. _______________ ___________ is succession where one community replaces another community that has been partially or totally destroyed. 13. Population growth curves: ______________ = exponential growth (does not reach carrying capacity). S-curve_ _ = logistic growth (reaches carrying capacity). * _____________ _______________ (K)= # of organisms that an environment can support. 19 POPULATION SIZE POPULATION SIZE Sample Questions: 1st Six weeks 1. Label the types of population growth represented by the graphs below and label carrying capacity on the logistic curve. TIME TIME _____________ TIME ____________ _________ 2. Which statement best describes some organisms in the food web shown at the right? A. Minnows and fish are primary consumers. B. Algae and floating plants are decomposers. C. Aquatic crustaceans are omnivores. D. Raccoons, fish, and ducks are secondary consumers. 3. A scorpion stalks, kills, and then eats a spider. Based on its behavior, which ecological terms describe the scorpion? A. Producer, herbivore, decomposer. B. Producer, carnivore, heterotroph. C. Predator, carnivore, consumer. D. Predator, autotroph, herbivore. 4. A rocky island appears as oceanic waters recede. Which of the following forms of vegetation would probably appear first on the bare rocks? A. Lichens B. Weeds C. Shrubs D. Pioneer trees 5. Label the following as producer, 1st order, 2nd order, 3rd order or decomposers: Mouse Grass Deer ______ ______ _______ Mushroom ________ Oak Tree ________ Snake _______ Owl _______ Wheat ______ 6. A lack of water limits the growth of grass in the grassland biome. This causes a reduction in the grass population. The effect it would have on the population of rabbits in the grassland would be A. no change in the rabbit population. B. a lack in food which would increase the rate of reproduction in rabbits, C. a decrease in the rabbit population. D. an increase in the wolf population. 7. A lack in water limits the growth of grass in the grassland biome. This causes a reduction in the number of grass seeds that are eaten by mice. The effect on the mice population would be A. the lack of grass would cause the mouse population to reproduce more. B. no change in the grass population. C. a decrease in the mouse population. D. an increase in the hawk population. 20 8. A dead, decaying tree has fallen to the forest floor in a Temperate Forest. It is rotting and the nutrients are being returned to the Earth because of the bacteria that is present. The role of the bacteria is as a A. producer B. primary consumer C. autotroph D. decomposer 9. Which of the following is NOT a source of carbon? A. burning fossil fuels B. respiration by animals C. decaying matter D. photosynthesis by plants 10. Which of the following produces oxygen? A. burning fossil fuels B. respiration by animals C. decaying matter D. photosynthesis by plants 11. When ______ increases in water, the bacteria take advantage of the increase nutrient resulting in an increase of bacterial numbers. Since bacteria need oxygen, the increase number of bacteria competes with fish for the available oxygen. A. Oxygen B. Carbon C. Nitrogen D. Phosphorus EVOLUTION 1. Law of ___ states older layers of fossils are beneath younger layers or fossils. “Relative dating” is a method that is not exact on dating the age of materials/soil. 2. Look at the rock strata below, which layer and which fossils are the oldest? _________; which layer and which fossils are the youngest? ________. These are the layers 1 A 2 B 3 C 4 D 5 E These are the fossils 3. _________________________= selection process by which individuals that are better adapted to their environment survive and reproduce EXAMPLE=faster fish being selected vs. slower fish 4. Artificial selection ____ = the selective breeding of organisms (by humans) for specific desirable characteristics EXAMPLE=dog or horse breeder. 5. _________________________ = change over time. 6. ______________________ __ = evolution occurs when species that were once similar become different or distinct. EXAMPLE=Darwin’s Finches. 7. ___________________ __ = evolution occurs when species that were once different (or distinct) became similar. EXAMPLE=Cactus and Honey Locust tree (thorns). 8. ___________________ _____ = structures are those that share structure NOT function. EXAMPLE=Bat Wing and Human Arm. 9. _________________________ = structures are those that share function NOT structure. EXAMPLE=Insect Wing and Bird Wing. 21 10. There are 2 types of Reproduction: A. ____________________ = 1 parent, no fusion of gametes. B. _____________________= 2 parents, fusion of gametes (egg + sperm = zygote). 11. Life Cycles: organisms either reproduce sexually or asexually- some use BOTH. ________________ of __________________= switch between both types of reproduction. 2 key parts: ____________________________(diploid)- asexual. ____________________________(haploid)-sexual. 12. Classification: system of organizing or grouping organisms. _____________→ Kingdom → ____________→ Class → Order → _________ → Genus → Species 13. ____________________ keys= a tool used in plant or animal identification. Always begin at the top (1a and 1b) which will lead you to the next statement or clue. 14. A _________________ is a diagram used to show the evolutionary relationships among groups of organisms. Sample Questions: 5th Six weeks 1. Which statement about evolution is true? A. Using anatomy studies to find evidence of evolution is a direct process. B. Fossils are not an important source for scientists to use to understand the evolutionary process. C. The fossil record provides evidence that evolution has occurred, but the record is not complete. D. Fossil finds are limited to the continents of Africa and Antarctica. 2. A farmer only breeds his chickens that lay an average of 30 eggs a week. His others lay an average of 15 eggs per week and they are not bred. This is an example of A. Natural selection B. Artificial selection C. Alternation of generations 3. What can you infer about these structures? A. B. C. D. They are homologous. They are vestigial structures. They have nothing to do with each other They are analogous. 4. Some bacteria produce an enzyme called penicillinase, which prevents their destruction by penicillin. Since these same organisms reproduce asexually, they normally produce offspring that A. can be killed by penicillin. B. have an abnormally high rate of mutation. C. have variable numbers of chromosomes. D. are resistant to penicillin. 22 5. According to this cladogram, after which organism did fur and mammary glands develop? A. Pigeon B. Chimp C. Salamander D. Mouse Students, Study for this exam using this guide and any/all assignments from your class that will benefit you and your understanding of the objectives. This exam is comprehensive-that means everything discussed thus far in Biology I will be addressed on this exam! Bring a pencil and Good Luck! 23