The changes in velocity of blood flow seen in section II are most directly influenced by which of the following?
a. The increasing blood pressure within the vessels
b. the distances of the vessels from the heart
c. The volume of blood pumped in one-systole-diastole cycle
d. The cross-sectional area of vessels
e. The thickness of the vessel walls
Answer: d. The cross-sectional area of vessels
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Which one of the following is NOT one of the general classes of macromolecules that are necessary for cellular function?
A. Nucleic acids B. Proteins C. Ions D. Carbohydrates E. Lipids
Four of the five outcomes listed below are possible
effects of habitat fragmentation on biodiversity. Select the exception. a. Chemical pollution may cause mass evacuation of the habitat. b. Species become more vulnerable to predators. c. Population numbers may be too small to maintain breeding. d. Food and other resources may be too scarce. e. Species become more exposed to temperature changes.
Heliobactor pylori and Ulcers
What will be an ideal response?
Which of the following is the best definition of fermentation?
A) the partial reduction of glucose to pyruvic acid B) the partial oxidation of glucose with organic molecules serving as electron acceptors C) the complete catabolism of glucose to CO2 and H2O D) the production of energy by oxidative-level phosphorylation E) the production of energy by both substrate and oxidative phosphorylation