Macromolecules that are used by most organisms to store hereditary information are called:
A. proteins.
B. transfer RNA molecules.
C. ribosomal RNA molecules.
D. DNA molecules.
E. messenger RNA molecules.
D
Biology & Microbiology
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Dimers of IgA are present in
A) breast milk colostrum. B) saliva. C) tears. D) breast milk colostrum, saliva, and tears.
Biology & Microbiology
A characteristic of a system that does not appear in any of its component parts is called a(n) ________
a. emergent property b. hierarchy of organization c. homeostasis d. adaptation
Biology & Microbiology
Four of the following contribute to acid rain. Which one is the exception?
a. ozone b. burning of coal c. nitrogen fertilizers d. burning of gasoline e. motor vehicles
Biology & Microbiology
What anatomical features help primates to live in trees?
What will be an ideal response?
Biology & Microbiology