What happens in oxidation-reduction (redox) reactions?
A) Atoms are exchanged.
B) Energy is used since these are endergonic reactions.
C) Electron exchange occurs.
D) Larger molecules are built from smaller subunits.
Answer: C
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What detects changes inside and around the body?
A) nerves B) sensory receptors C) effectors D) action potentials
Hydrochloric acid is a:
A) hydrogen ion acceptor. B) proton acceptor. C) hydrogen ion donor. D) hydroxide ion donor.
A low platelet count is referred to as __________.
Fill in the blank(s) with the appropriate word(s).
A functional syncytium
a. is a pair of antagonistic muscles causing a joint to move in opposite directions b. is able to contract as a unit because action potentials move between adjacent cells through gap junctions c. is a functional junction between a smooth muscle fiber and an autonomic nerve ending d. is all of the above e. is none of the above