Which of the following statement is not correct about DNA replication?
A. Only genes are replicated in DNA replication
B. It happens in the nucleus
C. It is semi-conservative
D. It involves DNA polymerase
Answer: A
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Which of the following statements about the structure or composition of DNA is FALSE?
A. DNA is a double helix. B. Complementary base-pairing occurs between pyrimidine and purine bases. C. The amount of thymine closely approximates that of guanine within a particular organism. D. Each nucleotide within a DNA is separated by about 0.34 angstroms. E. Adenine pairs with thymine and guanine with cytosine.
Which of the following is an example of a tissue?
A) heart muscle B) heart C) red blood cell D) circulatory system
In precipitation tests, maximum precipitation takes place when
A) the amount of the antibody exceeds the amount of the antigen. B) the amount of the antigen exceeds the amount of the antibody. C) the amount of the antibody and the amount of the antigen are at optimal proportions. D) a toxin is present. E) a complex solution of many antibodies is used.
Which of the following describes flash pasteurization?
A. heating at 63°C for 30 minutes B. heating at 72°C for 15 seconds C. heating at 72°C for 15 minutes D. heating at 134°C for one second E. passing liquid through steam at 140°C