Identify the primary role of the lymphatic system.
A. To produce and store large numbers of white blood cells
B. To distribute hormones around the body
C. To deliver oxygen to the deep muscle cells
D. To filter out cellular wastes from the blood
Answer: A
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Atractyloside is a poison that inhibits the transport of ADP from the cytosol across the mitochondrial membranes and into the mitochondrial matrix. The direct effect of this drug is to stop ATP synthesis because:
A. ADP is a necessary substrate for the reaction catalyzed by ATP synthase. B. it prevents proton pumping across the inner mitochondrial membrane. C. it prevents electron transfer to O2. D. it prevents electron transfer from NADH to complex I.
Delivery of bile into the small intestine causes the __________ of fats, breaking them into smaller, more easily
digested droplets. Fill in the blank(s) with the appropriate word(s).
Crossing over
a. generally results in binary fission. b. involves nucleoli. c. involves breakages and exchanges being made between sister chromatids. d. alters the composition of chromosomes and results in new combinations of alleles being channeled into the daughter cells. e. is the same as disjunction.
Which of the following statements concerning the heart is false?
a. It is an organ. b. It contains endothelium. c. It contains nerves. d. It is an organ system. e. It contains smooth muscle.