Somatic sensations originate from receptors that are present in more than one location in the body.
a. true
b. false
Answer: a. true
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All Prochlorococcus strains contain
A) chlorophylls a and b. B) chlorophyll a and phycobilins. C) chlorophyll b and phycobilins. D) chlorophylls a and b and phycobilins.
In the nitric oxide signaling pathway, nitric oxide activates an enzyme that can convert many molecules of GTP into molecules of cGMP. cGMP is a small molecule that can diffuse through the cytoplasm and bind to an enzyme called protein kinase G (PKG). Binding of cGMP to PKG leads to a change in the confirmation of PKG that leads to its activation. What type of signaling molecule is cGMP?
A. Scaffold B. Adapter protein C. Second messenger D. Enzyme
A diuretic is a substance that ________
A) promotes sweating B) regulates the contraction of cardiac muscle C) inhibits urinary water loss D) promotes urinary water loss
In mutualism ________.
A. the partners will not survive separately in many cases B. the mutualist is dependent on the host C. a reciprocal benefit accrues to both partners D. All of the choices are correct.