Which of the following is not a role the skeletal system plays in helping the cardiovascular system?
A. protects the brain
B. protects the heart
C. stores calcium for blood clotting
D. regulates the contraction of the heart
E. assists muscles in movement of blood in veins
Answer: D
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Analysis of the primary transcript for an insulin receptor protein reveals that exon 11 has been removed from the mRNA in skeletal muscle, but not in liver. How does this affect the proteins synthesized in these two types of cells?
A. Translation of the insulin receptor mRNA is inhibited in skeletal muscle. B. Translation of the insulin receptor mRNA is inhibited in the liver. C. The mRNA transcript for the insulin receptor protein will be identical in both the liver and skeletal muscle and so translation occurs in both cell types. D. The insulin receptor in skeletal muscle has a higher affinity for insulin than the receptor in the liver. E. The insulin receptor in the liver has a higher affinity for insulin than the receptor in skeletal muscle.
What types of cells can perform glycolysis?
a. animals b. plants c. bacteria d. most prokaryotic and eukaryotic cells
Four of the five answers listed below are the result of agriculture and power generation. Select the
exception. a. pesticide runoff b. increase in atmospheric cooling c. increase in atmospheric heating d. fertilizer runoff e. radioactive wastes
How does the nervous system change with aging?
What will be an ideal response?