Early gut colonizers are an important source of
a. amino acids.
b. vitamin K.
c. B vitamins.
d. all of the above.
Answer: D
Biology & Microbiology
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a. sensory hair b. proprioceptor c. small microvilli d. gelatinous structure e. calcium carbonate crystal
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In response to a high fat content in chyme, the duodenum releases ____
a. gastrin b. somatostatin c. CCK d. secretin e. GIP
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Under which of the following situations would receptor down-regulation most likely occur?
a. The number of G proteins is too high. b. The concentration of a hormone is too high. c. The cell is unable to manufacture cyclic AMP. d. The concentration of a neurotransmitter is too low. e. The number of receptors in the plasma membrane is too low.
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The pocket in an enzyme where substrates bind and a reaction occurs
Biology & Microbiology