Normal biota includes each of the following except ________.
A. viruses
B. protozoans
C. fungi
D. bacteria
E. All of the choices are correct.
Answer: E
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How much genetic information will an individual inherit from their mother?
a. 37% b. 78% c. 25% d. 100% e. 50%
Which structure is incorrectly paired with its tissue system?
a) companion cell - ground tissue b) palisade parenchyma - ground tissue c) guard cell - dermal tissue d) tracheid - vascular tissue e) root hair - dermal tissue
Which of the following combinations of chromosomes would be typical of a human male?
A. two X-chromosomes B. an X-and a Y-chromosome C. 2 Y-chromosomes D. None of these is correct.
Because DNA replication takes place at an extremely rapid rate, a cell must repair breaks in a strand of DNA up to approximately how many times in an hour?
a. ?200,000 b. ?1,000 c. ?10 d. ?2,000,000 e. ?10,000