Compare and contrast the location and activities of periplasm-binding proteins of ABC transport systems in gram-negative and gram-positive Bacteria
What will be an ideal response?
Answer: Answers will vary, but the main difference is gram negatives have many transport proteins within the cell's periplasmic space and gram positives (which lack a periplasm) have them anchored to the external surface of the cell; overall ATP-hydrolysis transportation is the same.
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Which of the following is an example of convergent evolution?
A. the blue whale and a chimpanzee both being mammals B. two different populations of humans having different amounts of pigmentation C. the African population possessing the sickle trait in areas where malaria is prevalent D. Europeans and Africans developing lactose tolerance separately after the domestication of cattle E. the African population possessing the sickle trait and the mutation in the G6PD gene in areas where malaria is prevalent
Which of the following is increased amphibian diversity correlated with?
A) sea surface temperature B) net primary productivity C) altitude D) distribution of land area across the globe
Who arranged organisms into a scale of nature and first stated that organisms changed toward the more complex and
perfect? a. Aristotle b. Lamarck c. Dobzhansky d. Charles Darwin e. Erasmus Darwin
Describe the four requirements for chemical evolution and why each was essential. What will be an ideal response?