Sister chromatids separate during
A. prophase of meiosis I.
B. metaphase of meiosis I.
C. metaphase of meiosis II.
D. prometaphase of meiosis I.
E. anaphase of meiosis II.
E. anaphase of meiosis II.
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Which of the following is (are) used by microorganisms to become resistant to a particular drug?
A. Exclusion of the drug from the cell B. Enzymatic inactivation of the drug C. An alternate metabolic pathway that bypasses the drug-sensitive step D. All of the choices are correct.
Which of the following is an oral agent used for treating dermatophytoses?
A. Chloroquine B. Itraconazole C. AZT D. Bacitracin
A marine fish with a cold body temperature that matches its cold surroundings is an example of
A. regulating. B. conforming. C. conditioning. D. negative feedback.
How does RNA polymerase know where to start transcribing a gene into mRNA?
A. The ribosome directs it to the correct portion of the DNA molecule. B. RNA polymerase starts when the enzyme attaches to a certain nucleotide sequence called a promoter at the beginning of a gene. C. It starts at one end of the chromosome. D. Transfer RNA acts to translate the message to RNA polymerase.