Which of these molecules is hydrophobic?
A) Amino acid
B) Protein
C) Glucose
D) Disaccharide
E) Cholesterol
E
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The brain and spinal cord constitute which of the following?
A. The autonomic nervous system B. The peripheral nervous system C. The central nervous system D. The afferent nervous system E. The somatic nervous system
What does the hormone produced by the heart do?
A. Increase sodium excretion in the kidney B. Increase potassium excretion in the kidney C. Increase sodium absorption in the kidney D. Decrease urine output E. Increase the heart rate and force
When a strong acid is placed in water, it
A. dissociates, but does not dissolve. B. dissolves but does not dissociate. C. dissolves and dissociates. D. does not dissolve or dissociate.
Cells that respond to peptide hormones usually do so through a sequence of biochemical reactions involving receptor and kinase activation. In order for cells to respond, it is necessary for first and second messengers to communicate
This is possible because ________. A) peptide hormones are converted by cell membranes enzymes into second messengers B) G protein acts as the link between first and second messengers C) the hormone receptor complex moves into the cytoplasm as a unit D) hormones alter cellular operations through direct stimulation of a gene