Which of the following is a component of the plasma membrane?
a. glycogen
b. vesicles
c. phospholipids
d. ribosomes
c. phospholipids
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In birds and mammals, a vestige of the sinus venosus of the fish heart remains as the sinoatrial node, which serves as a(n)
A. pacemaker. B. inhibitory node. C. diastole detector. D. site of erythropoiesis. E. baroreceptor.
A human heart cell contains chromosomes.
A. 16 B. 4 C. 2 D. 23 E. 46
Facilitated transport requires the use of ATP.
a. true b. false
Pathogenic bacteria isolated from the respiratory or intestinal tracts of humans are
A) strict aerobes that grow best in candle jars. B) capnophiles that grow best in carbon dioxide incubators. C) facultative anaerobes that require reducing media for growth. D) strict aerobes that grow best in reducing media. E) capnophiles that prefer highly oxygenated growth conditions.