Which structure transports blood way from the kidneys
a. ureters
b. renal vein
c. aorta
d. urinary bladder
Answer: b. renal vein
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Nucleic acids to be analyzed using microarrays are usually tagged by covalent attachment of ________ molecules.
Fill in the blank(s) with the appropriate word(s).
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
Chemical subunits called amino acids combine to make ____________________
Fill in the blank(s) with correct word
Answer the following statements true (T) or false (F)
1. All tissues are composed of cells. 2. The capacity to maintain a fairly constant body temperature is a homeostatic process. 3. A community is composed of different populations of animals and plants. 4. A defining characteristic that distinguishes prokaryotic and eukaryotic organisms is the lack of a cell membrane in prokaryotes.