The cells of bacteria can be categorized according to arrangement or style of grouping. The greatest variety in arrangement occurs in bacilli.
a. true
b. false
Ans: b. false
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The colon is responsible for resorbing water from food; without the colon, water from food must be replaced by water from drinking
A. true B. false
A patient comes to the emergency room suffering from severe dehydration. You are shocked to hear an orderly suggest, “We should just give him an IV of water to speed up his rehydration!” You quickly intervene, knowing this could cause grave harm. Why?
a. An IV of pure water would increase the tonicity of the blood so much that the red blood cells would shrivel from water loss. b. Pure water is known to be toxic and must be heavily diluted before given to patients. c. An IV of pure water would dilute the solute concentration of the plasma so much that the red blood cells would take on too much water through osmosis and burst. d. Pure water would make the cells and the plasma isotonic, and the patient would not rehydrate at all.
The platypus is a ________
A) bird B) marsupial C) eutherian D) monotreme
Which of these is a symptom of vitamin A deficiency?
A) anemia B) severe combined immunodeficiency disease (SCID) C) diabetes D) blindness E) blood doping