Which of the following is most likely to be responsible for a flu pandemic?

A. A bacteria
B. Antigenic drift
C. Antigenic shift
D. A point mutation
E. None of the answers are correct.


Ans: C. Antigenic shift

Biology & Microbiology

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Plants harbor hundreds of protein receptors called ____ proteins, which enable them to resist specific pathogens

Fill in the blank with the appropriate word.

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A plant hormone has the same effects in different plant tissues

a. True b. False

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What occurs during stage two of labor?

a. The cervix thins. b. The cervix dilates. c. The baby is expelled from the uterus. d. The placenta is expelled from the uterus.

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Continued exposure to carbon monoxide can

cause a. coma. b. cardiac arrest. c. seizures. d. death. e. all of these

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