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How do arachnids and myriapods/insects exchange gases with the environment? Why might have they evolved these structures?
Quetion 1: Besides distributing nutrients,gases, wastes, what other function does this structure have? Question 2: Describe tautomerization and its impact on DNA?
Question: Which sequence is correct in the development of multicellularity? a. Solitary cell -> Cells specialize functionally -> Formation of a colony b. Formation of a colony -> Cells specia
Quetion 1: Why is P. aeruginosa able to grow on a Phenylethyl alcohol agar plate? Question 2: Why does it show partial inhibited growth?
Question 1: What is the difference betwen Muscle fibres and Muscle tissues. Question 2: What is the difference between simple stratified and stratified epithelial tissues.
Quetion 1: Write a balanced equation for the oxidation of NADH by nitrate. Question 2: Which attribute(s) of habitat patches most affects population density and rates of immigration and emigration f
Question 1: Compare and contrast sensory transudction by primary olfactory and gustatory cells. Question 2: "nervous system is greater than the sum of its neural parts" explain at least 2 examples.
Affecting the level of Norepinephrine in the brain is of interest in treating ADHD. Explain why this is so. What are the benefits of increasing NE?
Give an example of the mutation accumulation hypothesis (of senescence)- you may use a hypothetical organism and/or traits ,provided it is realistic.
Question 1: Why is starch required for thermogenesis? Question 2: Which of the following is not a mechanism by which bacteria acquire genetic variation? A. mutation B. horizontal gene transfer C. pick
Question 1: What is the nervous system? Question 2: Cyanobacteria are very important in the ecosystem cycling of what element? a) sulfur b) nitrogen c) carbon d) oxygen e) phosphorus
Question 1: What is the function of a dust cell? Please do not provide cut and paste answers and please include a source. Question 2: What concentration of competitive inhibitor is required to yield
Question 1: What is the importance of clonal deletion in the thymus? Question 2: Describe how the immune system responds to cancer, and how cancer cells evade immune responses.
Question 1: A patient died from septice caused by E. Coli. The patient had undergone surgery to remove a portion of hos colon. Explain why this microbe, which normally lives in the colon could kill
Question 1: Explain why catalyst must affect the rate of a reaction in both directions. Question 2: What do homeotic, or Hox genes control? What would happen if you were to mutate one of the Hox genes
Question 1: Describe the number between a lytic & lysogenic bacteriophage infection Question 2: Since viruses lack metabolic enzyme, how can they synthesize necessary viral components Question 3:
Question 1: Are microbially produced fuels an economically viable renewable fuel source? Question 2: How could you distinguish between cospeciation and host shift?
Two cooties with the following genotypes are mated: Cootie 1 (RrWwPpLlBb) and Cootie 2 (RRwwPPLlBB). What is the phenotype of each cootie? What traits are dominant? What traits are recessive?
Question 1: Explain how auditory system detects the loudness of speech? and how it encodes pitch and frequency. Question 2: What is the goal behind desensitization(allergy shot)?
Question 1: How is fermentation different than anaerobic respiration? Question 2: What is meant by a cycle in PCR? What are the stages in each cycle and what happens in each stage?
Question 1: What are restriction enzymes and what are they used for in molecular biology? Question 2: What is Taq Polymerase? Question 3: Where was/is it found in nature?
Describe succession along coastal sand dunes, bogs and old fields. Be sure to both distinguish between primary and secondary succession and name specific plant species in each en