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Notes on Invertebrates
... AP BIOLOGY UNIT 11 (CH. 33) • Excretion of nitrogenous waste takes place through Malpighian tubules. Uric acid/dry for water conservation. • Complex nervous system (number of ganglia and a ventral, double nerve cord). • Open circulatory system. • Reproduction by insects often involves a male locati ...
... AP BIOLOGY UNIT 11 (CH. 33) • Excretion of nitrogenous waste takes place through Malpighian tubules. Uric acid/dry for water conservation. • Complex nervous system (number of ganglia and a ventral, double nerve cord). • Open circulatory system. • Reproduction by insects often involves a male locati ...
Chapter 9 – Multicellular and Tissue Levels of Organization
... II. Phylum Porifera - Sponges A. Primarily marine animals that consist of loosely organized cells B. Characteristics of members of Phylum Porifera C. Cell types, Body wall, and Skeletons 1. sponge cells are specialized for particular functions (division of labor) D. spicules - needlelike spikes. E. ...
... II. Phylum Porifera - Sponges A. Primarily marine animals that consist of loosely organized cells B. Characteristics of members of Phylum Porifera C. Cell types, Body wall, and Skeletons 1. sponge cells are specialized for particular functions (division of labor) D. spicules - needlelike spikes. E. ...
Biology Summary [PDF Document]
... Photosynthesis occurs in the leaves of a plant. The green chemical chlorophyll is needed for photosynthesis. It is found in the chloroplasts in a plant cell. Chlorophyll traps light energy and uses it to combine carbon dioxide and water. This forms glucose and oxygen. The water needed for photosynth ...
... Photosynthesis occurs in the leaves of a plant. The green chemical chlorophyll is needed for photosynthesis. It is found in the chloroplasts in a plant cell. Chlorophyll traps light energy and uses it to combine carbon dioxide and water. This forms glucose and oxygen. The water needed for photosynth ...
Chapter 9 Sexual and Gender Identity Disorders
... – Rare condition in adult males, but is the most common complaint of adult females – 25% of adult females report significant difficulty reaching orgasm – 50% of adult females report experiencing regular orgasms during intercourse ...
... – Rare condition in adult males, but is the most common complaint of adult females – 25% of adult females report significant difficulty reaching orgasm – 50% of adult females report experiencing regular orgasms during intercourse ...
Reptiles
... and a better circulatory system for life away from water Scaly skin provides protection against the elements and desiccation The amniotic egg protects against desiccation ...
... and a better circulatory system for life away from water Scaly skin provides protection against the elements and desiccation The amniotic egg protects against desiccation ...
Introduction to Animals
... ladder-like configuration. Planarians have eyespots allow the presence and intensity of light to be determined. They move away from light. Planarians are hermaphroditic, that is, they contain both male and female sex organs. They can reproduce asexually simply by pinching in half; each half grows a ...
... ladder-like configuration. Planarians have eyespots allow the presence and intensity of light to be determined. They move away from light. Planarians are hermaphroditic, that is, they contain both male and female sex organs. They can reproduce asexually simply by pinching in half; each half grows a ...
EOCT REVIEW STUDY GUIDE
... Cells can be grouped according to their similarities and differences. All cells can be divided into two categories – prokaryotes and eukaryotes. A PROKARYOTE is a cell that lacks a true nucleus and does not have membrane bound organelles. They do have a cell wall and a cell membrane. Bacteria and bl ...
... Cells can be grouped according to their similarities and differences. All cells can be divided into two categories – prokaryotes and eukaryotes. A PROKARYOTE is a cell that lacks a true nucleus and does not have membrane bound organelles. They do have a cell wall and a cell membrane. Bacteria and bl ...
physiological signs of sexual maturation
... 2) Parenting Styles Authoritative is best (surprise, surprise). ...
... 2) Parenting Styles Authoritative is best (surprise, surprise). ...
Evolutionary Perspectives on Hermaphroditism in Fishes
... in a gynodioecious population should be more competitive than a male in an androdioecious population, assuming that male gametes from hermaphrodites can be used to fertilize a female’s eggs. Once females have arisen in an otherwise hermaphroditic species, they may also gain a reproductive benefit by ...
... in a gynodioecious population should be more competitive than a male in an androdioecious population, assuming that male gametes from hermaphrodites can be used to fertilize a female’s eggs. Once females have arisen in an otherwise hermaphroditic species, they may also gain a reproductive benefit by ...
Special measures for protection from sexual exploitation and sexual
... sexual abuse, and shall take appropriate measures for this purpose. In particular, the Head of Department, Office or Mission shall inform his or her staff of the contents of the present bulletin and ascertain that each staff member receives a copy the reof. 4.2 The Head of Department, Office or Miss ...
... sexual abuse, and shall take appropriate measures for this purpose. In particular, the Head of Department, Office or Mission shall inform his or her staff of the contents of the present bulletin and ascertain that each staff member receives a copy the reof. 4.2 The Head of Department, Office or Miss ...
What is Science?? - Cherokee County Schools
... Bacteria reproduce by fission, a simplified form of cell mitosis. This results in identical offspring. An advantage to this type of reproduction is that if the organism is successful in the environment, *all* of its offspring will be successful as well. Some disadvantages are that bacteria adapt to ...
... Bacteria reproduce by fission, a simplified form of cell mitosis. This results in identical offspring. An advantage to this type of reproduction is that if the organism is successful in the environment, *all* of its offspring will be successful as well. Some disadvantages are that bacteria adapt to ...
Egg
... After the ingestion of embryonated eggs in contaminated food or drink or from contaminated fingers, host digestive juices acts on the egg shell and liberate the larva into the small intestine. These larvae penetrate the intestinal mucosa and enter lymphatics and mesenteric vessels. They are carried ...
... After the ingestion of embryonated eggs in contaminated food or drink or from contaminated fingers, host digestive juices acts on the egg shell and liberate the larva into the small intestine. These larvae penetrate the intestinal mucosa and enter lymphatics and mesenteric vessels. They are carried ...
Chapter 3 Hormones and Sexuality
... Most people have talked about sex with their samesex friends but not their partners Women do more self-disclose than men, but not by much All people need to express emotions and be able to communicate them Gender differences in communication styles Power differences affect communication ...
... Most people have talked about sex with their samesex friends but not their partners Women do more self-disclose than men, but not by much All people need to express emotions and be able to communicate them Gender differences in communication styles Power differences affect communication ...
Laboratory 6 nematodes
... strong, flexible noncellular layer called a cuticle. The body plan is simple. The body of a nematode is long and narrow, resembling a tiny thread in many cases, and this is the origin of the group's name. The word "nematode" comes from a Greek word “nema” meaning "thread". The epidermis (skin) of a ...
... strong, flexible noncellular layer called a cuticle. The body plan is simple. The body of a nematode is long and narrow, resembling a tiny thread in many cases, and this is the origin of the group's name. The word "nematode" comes from a Greek word “nema” meaning "thread". The epidermis (skin) of a ...
Marine Invertebrate Zoology Laboratory Procedures
... The life cycle of Plasmodium is complex and includes several generations with both sexual and asexual reproduction. The life cycle can best be understood by starting with the zygote in the gut of a mosquito, one of the two hosts necessary for the completion of the life cycle. The zygote becomes moti ...
... The life cycle of Plasmodium is complex and includes several generations with both sexual and asexual reproduction. The life cycle can best be understood by starting with the zygote in the gut of a mosquito, one of the two hosts necessary for the completion of the life cycle. The zygote becomes moti ...
Tic Tac Know PowerPoint - Beacon Learning Center
... begins with the next slide. Student groups play a traditional tic tac toe game with the questions on the slides. Questions and answers come up separately. Discuss answers thoroughly and allow time for comments/questions from students. A tic tac toe gameboard can be found at ...
... begins with the next slide. Student groups play a traditional tic tac toe game with the questions on the slides. Questions and answers come up separately. Discuss answers thoroughly and allow time for comments/questions from students. A tic tac toe gameboard can be found at ...
Presentation - RTI International
... behaviors to MSW (N= 307) and MSM (N= 43) z Then examined Sex Partners (SP) of MSMW to discern bridging – i.e., how similar, dissimilar are their SPs? ...
... behaviors to MSW (N= 307) and MSM (N= 43) z Then examined Sex Partners (SP) of MSMW to discern bridging – i.e., how similar, dissimilar are their SPs? ...
Contraception
... • It is the first weekly, non-invasive form of reversible contraception • How does it work? • What are advantages and disadvantages? ...
... • It is the first weekly, non-invasive form of reversible contraception • How does it work? • What are advantages and disadvantages? ...
Complex invertebrates
... covering to help them glide through the water. Have an air bladder, a bag like pouch that fills with gas to allow fish to adjust their depth in the water (go up or down in water) ...
... covering to help them glide through the water. Have an air bladder, a bag like pouch that fills with gas to allow fish to adjust their depth in the water (go up or down in water) ...
Section 6.3 Bacteria
... Salt Water Blooms are called Red Tides: * Red pigment in some salt water algae make the water look red. * Dinoflagellates and diatoms are common algae forming red tide. * Blooms usually occur when nutrients (food) and temperature increase. * Red tides are dangerous when toxins from the algae are con ...
... Salt Water Blooms are called Red Tides: * Red pigment in some salt water algae make the water look red. * Dinoflagellates and diatoms are common algae forming red tide. * Blooms usually occur when nutrients (food) and temperature increase. * Red tides are dangerous when toxins from the algae are con ...
BIO 102 Lecture Notes
... * Bacterial genetics - bacteria do possess a nuclear region (although not membranebound), and both DNA and RNA * Bacteria have one major chromosome and several smaller, circular sequences of DNA known as plasmids which endow special properties on the bacterium and in many cases can be exchanged with ...
... * Bacterial genetics - bacteria do possess a nuclear region (although not membranebound), and both DNA and RNA * Bacteria have one major chromosome and several smaller, circular sequences of DNA known as plasmids which endow special properties on the bacterium and in many cases can be exchanged with ...
PART I CHAPTER <^ STUDY GUIDE NA?1E 1. Animals without
... In the hydra, how are gases exchanged for respiration ...
... In the hydra, how are gases exchanged for respiration ...
Cells and Tissues
... which chromatids will go to which cell. • Random Fertilization. Which egg and which sperm will meet? = a greater genetic variability. ...
... which chromatids will go to which cell. • Random Fertilization. Which egg and which sperm will meet? = a greater genetic variability. ...
Mate Choice, Sexual Conflict, and Evolution of Senescence
... extend longevity over evolutionary time is supported by experimental and comparative data. Promislow, Smith, and Pearse (1998) used artificial selection to create divergent lines with high and low levels of opportunity for mate choice and male-male competition. They found that populations with great ...
... extend longevity over evolutionary time is supported by experimental and comparative data. Promislow, Smith, and Pearse (1998) used artificial selection to create divergent lines with high and low levels of opportunity for mate choice and male-male competition. They found that populations with great ...
Sexual reproduction
Sexual reproduction is a form of reproduction where two morphologically distinct types of specialized reproductive cells called gametes fuse together, involving a female's large ovum (or egg) and a male's smaller sperm. Each gamete contains half the number of chromosomes of normal cells. They are created by a specialized type of cell division, which only occurs in eukaryotic cells, known as meiosis. The two gametes fuse during fertilization to produce DNA replication and the creation of a single-celled zygote which includes genetic material from both gametes. In a process called genetic recombination, genetic material (DNA) joins up so that homologous chromosome sequences are aligned with each other, and this is followed by exchange of genetic information. Two rounds of cell division then produce four daughter cells with half the number of chromosomes from each original parent cell, and the same number of chromosomes as both parents, though self-fertilization can occur. For instance, in human reproduction each human cell contains 46 chromosomes, 23 pairs, except gamete cells, which only contain 23 chromosomes, so the child will have 23 chromosomes from each parent genetically recombined into 23 pairs. Cell division initiates the development of a new individual organism in multicellular organisms, including animals and plants, for the vast majority of whom this is the primary method of reproduction. A species is defined as a taxonomic rank. A species is often defined as the largest group of organisms where two hybrids are capable of reproducing fertile offspring, typically using sexual reproduction, although the species problem encompasses a series of difficult related questions that often come up when biologists define the word species. The evolution of sexual reproduction is a major puzzle because asexual reproduction should be able to outcompete it as every young organism created can bear its own young. This implies that an asexual population has an intrinsic capacity to grow more rapidly with each generation. This 50% cost is a fitness disadvantage of sexual reproduction. The two-fold cost of sex includes this cost and the fact that any organism can only pass on 50% of its own genes to its offspring. One definite advantage of sexual reproduction is that it prevents the accumulation of genetic mutations.Sexual selection is a mode of natural selection in which some individuals out-reproduce others of a population because they are better at securing mates for sexual reproduction. It has been described as ""a powerful evolutionary force that does not exist in asexual populations""Prokaryotes reproduce through asexual reproduction but may display processes similar to sexual reproduction (mechanisms for lateral gene transfer such as bacterial conjugation, transformation and transduction), but they do not lead to reproduction. In prokaryotes, the initial cell has additional or transformed genetic material.