In atherosclerosis,
a. the lumen of the artery is narrowed
b. the arterial walls fill with fibrous connective
tissue.
c. lipids in the bloodstream become embedded in
the walls of the endothelial lining.
d. a fibrous net covers the entire abnormal area.
e. all of these occur.
Answer: e
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Which of the following lists the correct pathway of blood through the circulatory system?
A) Left ventricle, aorta, systemic circuit, vena cava, right atrium, right ventricle, lungs, left atrium B) Right ventricle, aorta, systemic circuit, vena cava, left atrium, left ventricle, lungs, right atrium C) Right ventricle, vena cava, systemic circuit, aorta, left atrium, left ventricle, lungs, right atrium D) Left ventricle, vena cava, systemic circuit, aorta, right atrium, right ventricle, lungs, left atrium
Which of the following statements is true regarding the mark-and-recapture method?
A. It assumes that the size of the population of interest remains constant between the initial mark and subsequent recapture measurements. B. It can be represented by the equatiAon: N = C/R x M. C. It can rely on members of a species being identified by physical characteristics (i.e., fin markings on whales). D. It is used to estimate the size of a population of interest. E. All of the answer options are correct. F. None of the answer options is correct.
Which of the following statements concerning saliva is false?
a. Saliva moistens food. b. Saliva is secreted by three pairs of salivary glands. c. Saliva dissolves food so it can be tasted. d. Saliva starts the enzymatic digestion of lipids. e. Saliva starts the enzymatic digestion of starch.
When DNA is heated, the two complementary strands ___ (separate); when the strands are cooled , they ___ (come back together again).
What will be an ideal response?