Resident microbiota are found in/on the
A. large intestine.
B. nasal passages.
C. skin.
D. mouth.
E. All of these choices are correct.
Answer: E
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Abiotic factors are ________.
A. living and nonliving components of an ecosystem B. living components of an ecosystem C. nonliving components of an ecosystem D. None of the above
Morphological divergence
a. is the change in body form from that of a common ancestor. b. is the change in body form to resemble that of an ancestor. c. is no change in body form over time. d. does not occur in related species. e. only occurs in unrelated species
____ in the skin protects us from harmful ultraviolet light energy
a. Keratin b. Collagen c. Elastin d. Myosin e. Melanin
All viruses are made up of two components. What are they?
A. fiber proteins that extend from the body of the virus and one or more tails that are used for locomotion B. RNA and DNA C. a plasma membrane and DNA within a nucleus D. a protein capsid and genetic material, in the form of either RNA or DNA