The building blocks of nucleic acid molecules are called ___________.

A. nucleotides
B. polysaccharides
C. amino acids
D. DNA and RNA


A. nucleotides

Biology & Microbiology

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The most likely reason a metastatic tumor cell might lose its connection to the basal lamina would be:

A. a change in the composition of the basal lamina. B. the loss of integrin proteins from the cell's surface. C. a change in the type of integrin proteins present on the cell's surface. D. Answers b and c are both correct.

Biology & Microbiology

What strategy did Benzer use to perform intragenic mapping?

A. Infection of a cell with two different viruses that had mutations in the same gene could not result in a wild type virus by recombination B. Infection of a cell with two different viruses that had mutations in the same gene would result in a wild type virus by transduction C. Infection of a cell with two different viruses that had mutations in different genes could result in a wild type virus by recombination D. Infection of a cell with two different viruses that had mutations in the same gene could result in a wild type virus by recombination

Biology & Microbiology

Why are human testes in an external sac rather than in the abdominal cavity?

What will be an ideal response?

Biology & Microbiology

Compare and contrast synthesis reactions with decomposition reactions

What will be an ideal response?

Biology & Microbiology