PNB 2250 EXAM 3 PRACTICE
QUESTIONS AND ANSWERS
The presence of poly-unsaturated fatty acids in the cell membrane is decreased in larger animals with
lower mass-specific metabolic rates(E3)
A. true
B. false
C. this is dependent on animal shape
D. This is only true for swimming animals
E. thi...
C. the interaction of the myosin head with tubulin
D. the movement of the myosin head in contact with actin
E. the movement of the myosin tail - Ans:✔✔-D. the movement of the myosin head in contact with actin
A fish in seawater...(E3)
A. rapidly gains water through the gills
B. rapidly gains water through the gills
C. actively pumps solutes out of its body through the gills
D. must be an osmoconformer
E. must produce a very dilute urine - Ans:✔✔-C. actively pumps solutes out of its body through the gills
The absence of .... would allow striated muscle to contract in the absence of calcium (E3)
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