Treponema pallidum is extremely sensitive to temperature changes and low moisture, thus it is transmitted
A) by intimate person-to-person contact.
B) by fomites.
C) by vectors.
D) through common sources such as food and water.
Answer: A
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Which is the correct order of complexity from lower to higher for the following?
A. organs, tissues, cells B. cells, tissues, organs C. tissues, organs, cells D. cells, organs, tissues
The light-harvesting complexes of photosynthesis are
located a. on the outer surface of the outer membrane. b. on the inner surface of the outer membrane. c. in the thylakoid compartment. d. in the stroma. e. in the thylakoid membrane.
Ventilation causes alveoli of the lungs to have ________ the blood in pulmonary capillaries.
A. the same PO2 and PCO2 as B. a higher PO2 and a lower PCO2 than C. a lower PO2 and a higher PCO2 than D. No answer is correct.
The (codon/anticodon/loop) of a transfer RNA molecule is complementary to a codon in a messenger RNA molecule.
Fill in the blank(s) with the appropriate word(s).