___________ are the building blocks of DNA.

A. genes
B. double helices
C. amino acids
D. nucleotides
E. chromosomes


D. nucleotides

Biology & Microbiology

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An accumulation of cells that divide

uncontrollably is known as

a. oncogenes. b. proto-oncogenes. c. neoplasms. d. checkpoints. e. descendant tumors

Biology & Microbiology

Which of the following terms is used to indicate the entire set of proteins that can be made by a cell?

A) transcriptome B) genome C) proteome D) metabolome E) exome

Biology & Microbiology

Which sentence best describes the process of competitive inhibition?

a. The inhibitor binds to and directly blocks the active site of the enzyme. b. The products of the reaction block the active site of the enzyme. c. The substrate and cofactors compete for the active site. d. The inhibitor binds to a site other than the active site of the enzyme and blocks enzyme activity indirectly.

Biology & Microbiology

Which of the following bacteria that inhabit the mouth is involved in plaque formation?

A. Streptococcus mutans B. Haemophilus spp. C. Streptococcus viridans D. Lactobacillus spp. E. Staphylococcus spp.

Biology & Microbiology