The ____ protist group includes human pathogens
a. parabasalids
b. euglenoids
c. forams
d. red algae
e. brown algae
ANSWER: a
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In a cell membrane, the phospholipid heads are ____
a. hydrophobic b. nonpolar c. dissolved in the cell’s watery interior d. sandwiched between the phospholipid tails e. formed by fatty acids
The human heart
a. contracts as a result of stimuli from the sinoatrial node. b. contracts only as a result of nerve stimulation from the central nervous system. c. is activated primarily through the autonomic nervous system. d. rate is primarily under the control of the atrioventricular node. e. is independent of all nervous control.
The images above are an example of
a. mimicry. b. display behavior. c. warning coloration. d. chemical defenses. e. camouflage.
If the physical expression of a heterozygous individual is intermediate between those of the homozygotes, the alleles are ________
Fill in the blank(s) with correct word