Atherosclerosis is characterized by
a. increased circulation to the heart
b. larger muscles
c. a narrowing of the inner walls of coronary arteries due to buildup of fatty materials
d. a widening of inner walls of blood vessels as a result of a heart attack
Ans: c. a narrowing of the inner walls of coronary arteries due to buildup of fatty materials
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Modeled after actuarial tables, how do life tables assort the population?
a. by wealth b. by tax bracket c. by age interval d. by illness or condition
Which of the following would not be a function of the peroxisomes?
A) break down fats in the liver B) produce bile salts in the liver C) help germinating seeds convert fatty acids into molecules that can be converted to sugars D) storage of toxic materials in the cell E) metabolism that uses oxygen and releases carbon dioxide in leaves
In what way are a human and a crab similar?
A. Both have muscles that pull against rigid skeletons. B. Vertebrates and arthropods are deuterostomes. C. Both have closed circulatory systems. D. Both have a continuous growth pattern.
What helps regulate the movement of carbon dioxide into and out of a leaf?
A) guard cells B) root hairs C) sieve plates D) xylem