The pancreatic hormone ________ reduces levels of glucose in the blood by increasing glucose absorption by certain body cells.
A. somatostatin
B. glucagon
C. insulin
D. glycogen
Answer: C
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The botulinum toxin, which causes botulism, reduces the synaptic release of _____
A) acetylcholine B) epinephrine C) endorphin D) nitric oxide E) gamma-aminobutyric acid (GABA)
Action potentials are propagated along a(n) ____
a. sodium channel b. axon in two directions c. gated channel d. axon in one direction e. dendrite
Instead of a(n) ____________________ group to link nucleotides together, the modified nucleotides used during automated DNA sequencing have only an -H. Fill in the blank(s) with the appropriate word(s)
The primary mechanism whereby cytotoxic T cells are able to destroy infected cells involves
A) activation of the complement system. B) the incorporation of perforins into the cell membrane. C) phagocytosis. D) incorporation of the major attack complex. E) enzymatic degradation