* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download function
Site-specific recombinase technology wikipedia , lookup
Cre-Lox recombination wikipedia , lookup
Extrachromosomal DNA wikipedia , lookup
Expanded genetic code wikipedia , lookup
X-inactivation wikipedia , lookup
Designer baby wikipedia , lookup
Deoxyribozyme wikipedia , lookup
Genetic code wikipedia , lookup
Therapeutic gene modulation wikipedia , lookup
Primary transcript wikipedia , lookup
Polycomb Group Proteins and Cancer wikipedia , lookup
History of genetic engineering wikipedia , lookup
Nucleic acid analogue wikipedia , lookup
Microevolution wikipedia , lookup
Artificial gene synthesis wikipedia , lookup
Point mutation wikipedia , lookup
Macromolecule: Nucleic acid: - what? structure? - m? monomer? - p? function? Protein: example structure? carbohydrate monomer? structure function? monomer example function Lipid example structure Enzymes: monomer function example - what - function to What causes tomatoes to ripen much more slowly in a refrigerator than they do if left on a table at room temperature? a. tomatoes need sunlight to ripen b. humidity accelerates the ripening process c. low temperatures reduce the action of ripening enzymes d. enzymes produced by bacteria inhibit ripening There are many different enzymes located in the cytoplasm of a single cell. How is a specific enzyme able to catalyze a specific reaction? a. different enzymes are synthesized in specific areas of the cytoplasm b. most enzymes can catalyze many different reactions c. an enzyme binds to a specific substrate (reactant) for the reactions catalyzed. d. enzymes are transported to specific Some snake bites are harmful because they contain enzymes that destroy blood cells or tissues. The damage caused by such a snake bite could be best slowed by ? a. applying ice to the bite area b. drinking large amounts of water c. inducing vomiting d. increasing blood flow to the area Maltose can be broke down into glucose molecules by the enzyme maltase. Which of the following would slow the reaction rate? a. adding maltase b. adding maltose c. removing glucose d. diluting with water P… E… - Organelle: -nucleus -structure -function -endoplasmic reticulum -structure -types -functions -mitochondria -structure -function - chloroplast -structure -function -found in - golgi apparatus -structure -function 1. On the pH scale numbers higher than 7 represent? a. acid b. base c. neutral d. none of the above 2. An environmental signal to which an organism responds is a(n) a. stimulus b. inference c. manipulated variable d. responding variable 3. Organic molecules consisting of nucleotides made of a nitrogen base, a sugar, and a phosphate group are called: a. carbohydrates b. nucleic acids c. proteins d. steroids 4. What macromolecule is shown in the diagram ? a. carbohydrate b. lipid c. protein d. nucleic acid 5. In the graph, which reaction is catalyzed by an enzyme? a. A b. B c. Both d. None 6. Which of the following is not a carbohydrate? a. sugars b. starches c. fatty acids d. cellulose 7. Which of the following is an example of a prokaryote? a. amoeba b. virus c. bacteria d. all of these are prokaryotes 8. The organelle that consists of a stack of membranes and serves to process and package proteins for secretion is the a. mitochondria b. enodplasmic reticulum c. lysosome d. Golgi Apparatus 3 2 5 4 1 9. Refer to the diagram. The smooth endoplasmic reticulum functions to? a. detoxify lipids (drugs) b. make proteins c. package proteins d. combine proteins with lipids to make enzymes 10. Refer to the diagram. The rough endoplasmic reticulum _______? a. is the site of carbohydrate formation b. is the site of lipid formation c. assists in protein synthesis d. none of these 11. The above cell is probably an animal cell because it has? a. It has mitochondria b. It does not have a cell wall c. It has a cell membrane d. It does not have a nucleus ? Has Is surrounded by contains A well-defined nuclear membrane DNA A rigid coat of cellulose mitochondria chloroplast Which of these best completes this concept map? a. an animal cell b. a prokaryotic cell c. a virus d. a plant cell Eukaryotic cells are differentiated from prokaryotic cells because eukaryotic cells ? a. are much smaller b. have permeable membranes c. have a higher rate of reproduction d. have nuclei Which organelle is responsible for packaging the proteins that the cell secretes ? a. cytoskeleton b. Golgi apparatus c. lysosome d. ribosome A cell from a heart muscle would probably have an unusually high proportion of? a. lysosomes b. mitochondria c. mRNA d. Golgi bodies The diagram to the left shows a cell that has a cell wall and free floating DNA. What type of cell is this one most likely to be? a. prokaryotic b. eukaryotic c. viral d. animal Organelle: -lysosome -structure -function -centrioles -structure -types -functions -ribosomes -structure -function Plant Cell vs. Animal Cell Cell Membrane: -structure -function - semi-permeable - fluid mosaic model -Membrane movement -concentration -active -passive -d -o -facilitated The cell membrane of the red blood cell will allow water, oxygen, carbon dioxide, and glucose to pass through. Because other substances are blocked from entering this membrane is called? a. perforated b. semi-permeable c. non-conductive d. permeable The plasma membrane ? a. protein molecules arranged in two layers with polar areas forming the outside of the membrane b. two layers of lipids organized with the nonpolar tails forming the interior of the membrane c. lipid molecules positioned between two carbohydrate layers d. protein molecules with polar and nonpolar tails All cells are surrounded by membranes. The main role of the cell membrane is to ? a. regulate the cell’s interactions with the environment. b. release any type of molecule out of the cell c. arrange the cell’s organelles in the cytoplasm d. prevent water from leaking out of the cell What type of molecule embedded in the cell membrane allows larger molecules to pass through the membrane by active transport? a. phospholipid b. proteins c. ATP d. carbohydrates Osmosis is the movement of water across a cell membrane. In osmosis, water molecules move between phospholipids and toward areas that have a lower concentration of water molecules. Osmosis is a type of a. diffusion b. facilitated diffusion c. active transport d. fluid mosaic model Cellular Respiration - what ? - equation -Glycolysis: -breaks down -aerobic vs. anaerobic -takes place in -Krebs cycle -breaks down - takes place in -functions -Electron transport chain -breaks down -takes place in - results Photosynthesis: -what? - equation -occurs where -Stage I – Light Dependent - where? - Stage II- Light Independent - where? - also called? Which molecule in plant cells first captures the radiant energy from sunlight? a. glucose b. carbon dioxide c. chlorophyll d. adenosine triphosphate The first stage of photosynthesis in a chloroplast is? a. light-dependent b. temperature-dependent c. glucose-driven d. ATP-driven In aerobic respiration, the Krebs cycle (citric acid cycle) takes place in a. chloroplasts b. nuclei c. lysosomes d. mitochondria Sugar + oxygen carbon dioxide + water + ____ The diagram above describes the process of cellular respiration. During this process, cells use sugar and oxygen to form carbon dioxide and water, and to produce usable form of energy. What is the missing product in the equation above? a. mitochondria b. ATP c. sugar d. sunlight Carbon monoxide is a gas that has one carbon atom bonded with one oxygen atom (CO). When inhaled, carbon monoxide is deadly because it prevents red blood cells from carrying oxygen to other cells in the body. Without oxygen, cells cannot undergo? a. cellular respiration b. photosynthesis c. DNA replication d. passive transport In aerobic respiration, the Krebs cycle (citric acid cycle) takes place in a. chloroplasts b. nuclei c. lysosomes d. mitochondria 1. The organelle associated with aerobic cellular respiration is: a. chloroplasts b. mitochondria c. golgi apparatus d. vacuoles Reactants (water, carbon dioxide) Go into the chloroplasts Which forms? 2. The illustration to the left diagrams photosynthesis occuring in the chloroplast. What products are formed by photosynthesis? a. Carbon dioxide and energy b. Water and oxygen c. Chlorophyll and carbon dioxide d. Sugar and oxygen Products???? 3. Referring to the diagram above we can observe that there are many more Na ions outside the neuron than inside and that there are many more K ions inside the neuron than outside. This results in what is called a. concentration gradient b. equilibrium of molecules c. passive diffusion d. exocytosis 4. The cell membrane consists of a. Two protein layers b. Two carbohydrate layers c. Two lipid layers d. A slid mass of lipids 5. Ribosomes are the site of a cells a. Energy release b. Digestion c. Gas exchange d. Protein synthesis 6. During photosynthesis the light dependent reactions take place in a. Thylakoid membrane b. Stroma c. Double membrane d. None of these 7. Which of the following best describes the function of photosynthesis? a. To convert energy from sunlight into the stored chemical energy of sugar b. To release energy from sugar into the atmosphere c. To produce water for plants to use in photosynthesis d. To dispose of carbon dioxide that builds up by digesting food 8. In photosynthesis light independent reactions are also called the a. Calvin cycle b. Krebs Cycle c. Water cycle d. Photosynthesis II cycle 9. 6CO2 + 6 H20 + energy C6H12O6 + 6O2 The formula represents the process of ? a. Cellular respiration b. Independent respiration c. Photosynthesis d. Cell respiration 10. C6H12O6 represents? a. Water b. Carbon dioxide c. Glucose d. Energy 11. The heart is a muscle that pumps blood throughout the body. In order to perform its function, the heart requires a lot of energy. Which of the following would the heart need the most of in order to get the energy it needs to pump blood throughout the body? a. Lysosomes b. Mitochondria c. DNA d. Endoplasmic reticulum Mitosis: -what? -type of cell - chromosomes - type of chromosomes - how many -p -m -a -t Meiosis: - what? - type of cells - steps -results - crossing over? - what? - when? -type of chromosomes? #? DNA - stands for - duplicates by - base pairs - bond - coil called? - semi-conservative replication? Mutations - duplication - deletion - inversion - translocation - effects Differentiation - what -importance? Central Dogma: - DNA RNA __________ - mRNA - tRNA - rRNA - transcription? -what - where - codons? - base pairing rules - translation - what - where - anticodons - codon chart 1. 1. This process is known as: 3. Which of the following best describes meiosis? a. Meiosis • b. Mitosis It is carried out in all tissues that require cell replacement c. Endocytosis • It occurs only in cells in the reproductive structures in organisms d. Phagocytosis. • It happens in all tissues except the brain and spinal cord • It is the first stage of mitosis 2. Which of the following statements correctly describes meiosis? a. Cells divide only once during meiosis b. Meiosis does not occur in reproductive cells c. The cells produced at the end of meiosis are genetically identical to the parent d. The cells produced at the end of meiosis contain half 4. The diagram above shows homologous chromosomes during prophase I of meiosis. Which of the following correctly describes the process being illustrated? • Mutation in which the DNA content of the gene is altered • Segregation of sister chromatids • Condensation and segregation of alleles • Crossing-over in which alleles are exchanged 7. A scientist puts the 5. Which of the following sequences nucleotide chains of UUUUUU in a test tube represents chromosome number under conditions during fertilization? allowing protein a. n+n 2n synthesis. Soon the test tube is full of b. 2n n+n polypeptide chains composed of only the c. N n amino acid phenylalanine. What d. 2n –> 2n does this experiment 6. 5’ ATCAGCGCTGGC 3’ indicate? The above sequence of DNA is part of • a gene. How many amino acids are coded for by this segment? a. 4 b. 8 c. 12 d. 20 8.. The table below lists the typical diploid number of chromosomes of several different organism. Diploid number of chromosomes Goldfish 94 Potato 48 Human 46 Pea 14 Fruit fly 8 The amino acid phenylalanine is composed of uracil Which of the following is the best explanation for why the chromosome number is an even number in each of these organisms? • UUU codes fro the amino acid phenylalanine a. It is only a coincidence; many other organisms have an odd number of chromosomes • Protein syntheis malfunctions in a test tube b. The diploid chromosome number is always even so that when mitosis occurs each new cell gets the same number of chromosomes • c. Most proteins contain one type of amino acid d. The diploid chromosome number represents pairs of chromosomes, one from each parent, so it is always an even number Chromosomes double every time the cell divides, so after the first division, the number is always even. 9. Which of these would most likely cause a mutation? 12. Although there are a limited number of amino acids, many different types of proteins exist because the a. The placement of ribosomes on the endoplasmic reticulum • Size of a given amino acid can vary b. The insertion of a nucleotide into DNA • Chemical composition of a given amino acid can vary • Sequence and number of amino acids is different • Same amino acids can have many different properties c. d. The movement of transfer of RNA out of the nucleus The release of messenger RNA from DNA 10. Using the codon chart. A strand of mRNA containing the repeating sequence AAGAAGAAGAAg could code for which of the following amino acid sequences? 11. One human disease is caused by a change in one codon in a gene from GAA to GUA. This disease is the result of a. Mutation a. lys-arg-glu-lys b. A meiosis error b. Ser-ser-glu-glu c. Crossing-over c. Lys-arg-lys-arg d. polyploidy 13. The clear protein of an egg white becomes opaque and firm when cooked because the heat? • Mutates the DNA • Turns the protein into carbohydrates • Stops protein formation • Changes the protein structure 14. Which of the following base pair 16. A base sequence is shown below. sequences could be produced in DNA ACAGTCG replication? How would the base sequence be coded on • 5’ AGTCUT 3’ mRNA? 3’ TCUGTA 5’ • TGTCACG b. 5’ AGTCAT 3’ • GUGACAU 3’ TCAGTA 5’ • UGUCACG c. 5’ AGTCAT 3’ • CACUGUA 3’ CTGACG5’ 17. Semi-conservative replication of DNA d. 5’ AGTCAT 3’ refers to the idea that 3’ UCAGUA 5’ 15. 5’ GTA _ _ _ AA 3’ 3’ CAT GCATT 5’ • DNA molecules need to unwind before duplication begins. • Each new DNA molecule contains tow new single RNA strands This segment of DNA has undergone a • mutation in which three nucleotides have been deleted. A repair enzyme would replace them with • a. CGT b. GCA c. CTG d. GTA The two strands of DNA molecules run in opposite directions Each half of the original DNA molecule is joined with a new complementary DNA strand. 7. The statements below are steps in the process of protein synthesis. Put the letters representing each statement in the correct order, from start 1. What do the boxed chromosomes represent? 4. In the RNA molecule, the nitrogen base adenine to finish. is always complementary to what other nitrogen base? a. mRNA moves along the a. A base pair of DNA a. a. b. Fertilization of gametes b. Guanine c. Anaphase of mitosis c. Thymine d. Homologous chromosomes d. Uracil ribosome so the next anticodon is paired with its codon Cytosine 2. 5. In order for protein synthesis to occur, mRNA must travel to the Which occurs in meiosis but not mitosis? a. Random chromosome segregation b. Formation of haploid cells c. Crossing over d. All of these a. ribosomes b. mRNA moves out of the nucleus to a ribosome c. tRNA brings an amino acid in the cytoplasm to the codon on the ribosome d. mRNA is released at a “stop” codon when the amino acid chain is complete b. lac operon c. RNA polymerase d. heterochromatin 6. During translation in eukaryotes, anticodons 3. What is an advantage of sexual reproduction?a. Never bind to the mRNA codons. a. Offspring are identical to parents Assist in the assembly of fats b. Sexual reproduction happens more rapidly c. c. Genetic variation increases d. Sexual reproduction often produces more b. d. a. A, B, C, D b. B, A, D, C Ensure that each amino acid is delivered in the c. proper order by binding to a codon on mRNA. B, C, A, D Consist of a five-nucleotide sequence at one end of th transfer RNA molecule -genotype Genetics: -what - homozygous - example - what - example - Allele -What - heterozygous -Example - what - example Punnett Squares Cross - dominant - what Parent - example Offspring Dihybrid - recessive - what - example - phenotype - what - example Law of segregation Genetic Engineering Law of independent assortment -Recombinant DNA Sex-linked traits - Benefits 1. If a corn plant has a genotype of Ttyy, 3. In fruit flies, the gene fro red eyes (R) is 5. Fur color in cats is controlled by an autosomal what are the possible genetic dominant and the gene for sepia eyes (r) gene that can occur in the dominant form, (B) combinations that could be present in is recessive. What are the possible or the recessive form, (b). The length of the a single grain of pollen from this plant? combinations of genes in the offspring of cat’s fur is controlled by another autosomal two red-eyed heterozygous flies (Rr)? gene that occurs in the dominant form (S), or a. Ty, ty the recessive form (s). The table below shows a. RR only b.TY, ty the traits for these allele codes. b. rr only c. TY, Ty, ty Gene Trait c. Rr and rr only d. Ty, ty, tY, TY B black fur d. RR, Rr, and rr only 2. Based only on sex chromosomes in b white fur typical human egg and sperm 4. In certain breeds of dogs, deafness is due to S short hair cells at fertilization, the a recessive allele (d) of a particular gene, probability of producing a and normal hearing is due to its s long hair female is? dominant allele (D). What percentage of the offspring of a normal heterozygous The following genotypes were found in a male cat a. 25% and a female cat. (Dd) dog and a deaf dog (dd) would be b. 50% expected to have normal hearing? BbSs (male) bbSS (female) c. 75% a. 0% d. 90% b. 25% Which one of the following choices is true of the phenotype of offspring from these parents? c. 50% a. All offspring have black fur d. 100% b. All offspring will have white fur c. All offspring will have long hair d. All offspring will have short hair 1. If a human baby boy inherits a recessive allele from his mother, in which circumstance would he most likely show the trait coded for by the recessive allele? 3. Genetic engineering has produced goats whose milk contains proteins that can be used as medicines. This effect was produced by: a. The baby inherits the dominant allele from the mother a. Mixing foreign genes into the milk b. The allele is on an autosomal chromosome and the baby is a twin b. Injecting foreign genes into the goats udders c. The allele is on the X chromosome c. d. The allele is on the Y chromosome Inserting foreign genes into the fertilized goat eggs d. Genetically modifying the nutritional needs of the goats’ offspring. 2. The bacterium Agrobacterium tumefaciens infects plants, and a portion of its DNA is inserted into the plant’s chromosomes. This causes the plant to produce gall cells, which manufacture amino acids that the bacterium uses as food. This process is a natural example of a. Polyploidy b. Genetic manipulation c. Grafting d. hybridization 1. What factor determines the sex of an individual? a. The female egg’s X chromosome b. The male sperms X or Y chromosome c. Both the male and female gametes’ chromosomes d. None of these 2. What causes some traits to occur most often in males? What is the general term for direct manipulation of genes? An allele that appears only when the dominant allele is absent (not there) is called: a. Heterozygous a. Gene sequencing b. Homozygygous b. Hybridization c. Dominant c. Gene expression d. Recessive d. Genetic engineering a. Heterozygous alleless b. Homozygous alleles c. Incomplete dominance If a parent homozygous dominant for a traits is crossed with a parent that is homozygous recessive for that trait what would be the probability that their offspring would be homozygous recessive? d. Sex-linked traits a. 0% 3. Since the allele for colorblindness is located on the X chromosome, colorblindness b. 25% c. 50% a. Cannot be inherited d. 100% b. Occurs only in adults c. Is sex-linked The combining of DNA from 2 different organisms is called: d. None of the above a. Gel electrophoresis b. Polymerase chain reaction c. Recombinant DNA d. Selective breeding