The stimulation of B cells to divide and mature is provided by

A. T helper cells.
B. macrophages.
C. T cytotoxic cells.
D. plasma cells.


A

Biology & Microbiology

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Methanogens can live only in ________ environments.

A. microaerophilic B. aerobic C. anaerobic D. All of the choices are correct.

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Which process converts the nucleotide language of mRNA into the amino acid language of a protein?

A) DNA replication B) transcription C) translation D) meiosis

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Ehlers–Danlos syndrome and scurvy both are characterized by defects in

A) fibronectin. B) desmosomes. C) collagen. D) dystrophin. E) elastin.

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Nucleic acids have primary, secondary, tertiary, and quaternary levels of organization.

Answer the following statement true (T) or false (F)

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