Cilia and flagella are most similar in
a. length.
b. the kinds of cells that have them.
c. the number that cells usually have.
d. their internal composition and structure.
e. their location along the cell’s periphery.
Answer: d
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For circulating antibodies to reach the foreign cells in connective tissue, as an example in a puncture wound, what must happen?
a. Histamines must cause capillary permeability to decrease. b. Histones must cause interferons to be produced. c. Interferons must activate b cells. d. Antihistamines must deactivate goblet cells. e. Histamines must increase capillary permeability.
Oxygen moves from alveoli to the bloodstream
a. because the concentration of oxygen is greater in alveoli than in the blood. b. mainly due to the activity of carbonic anhydrase in the red blood cells. c. because of its attraction to hemoglobin. d. to counter the high concentration of CO2 in the blood. e. because of all of these
Four of the five choices listed below are
characteristics of periderm. Select the exception. a. dermal tissue b. suberin c. cork d. waterproof protection e. primary tissue
Which foods or food ingredients are regulated by the FDA to ensure food safety?
A) vitamin tablets B) cheese C) sirloin steaks D) chicken wings