cell communication utilizes chemical messenger systems that:
2i 2i 2i 2i 2i 2i
A) displace surface receptor proteins.
2i 2i 2i
B) accumulate within cell gap junctions. 2i 2i 2i 2i
C) bind to contractile microfilaments.
2i 2i 2i
D) release secretions into extracellular fluid.
2i 2i 2i 2i
5.
Aerobic metabolism, also known as oxidative metabolism, provides ener
2i 2i 2i 2i 2i 2i 2i 2i
gy by: 2i
A) removing the phosphate bonds from ATP.
2i 2i 2i 2i 2i
B) combining hydrogen and oxygen to form water.
2i 2i 2i 2i 2i 2i
C) activating pyruvate stored in the cytoplasm.
2i 2i 2i 2i 2i
D) breaking down glucose to form lactic acid.
2i 2i 2i 2i 2i 2i
6. Exocytosis, the reverse of endocytosis, is important in
2i 2i 2i 2i 2i 2i 2i
into the
2i
extracellular fluid.
2i 2i
A) Engulfing and ingesting fluid and proteins for transport
2i 2i 2i 2i 2i 2i 2i
B) Killing, degrading, and dissolving harmful microorganisms
2i 2i 2i 2i 2i
C) Removing cellular debris and releasing synthesized substances
2i 2i 2i 2i 2i 2i
D) Destruction of particles by lysosomal enzymes for secretion
2i 2i 2i 2i 2i 2i 2i
7.
The process responsible for generating and conducting membrane potentia
2i 2i 2i 2i 2i 2i 2i 2i
ls is:
2i
A) diffusion of current-carrying ions.
2i 2i 2i
B) millivoltage of electrical potential. 2i 2i 2i
C) polarization of charged particles. 2i 2i 2i
D) ion channel neurotransmission.
2i 2i
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