32.Tetrahydrofolate (THF) and its derivatives shuttle _____ between different substrates. (A) electrons. (B) (C) NH2 groups. (D) one carbon units. (E) acyl groups.

32.Tetrahydrofolate (THF) and its derivatives shuttle _____ between different substrates.
(A) electrons.
(B)
(C) NH₂ groups.
(D) one carbon units.
(E) acyl groups.

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39. A plasmid that encodes resistance to ampicillin and tetracycline is digested with the restriction enzyme Sall, which cuts the plasmid at a single site in the tetracycline-resistance gene. The DNA is then annealed with a Sall digest of human DNA, ligated, and used to transform E. coli cells. What antibiotic would you put in an agar plate to ensure that the cells of a bacterial colony contain the plasmid? (A) Ampicillin. (B) Tetracycline. (C) Ampicillin and tetracycline. (D) Any antibiotic will do. (E) The agar plate should not contain any antibiotic.

32.Tetrahydrofolate (THF) and its derivatives shuttle _____ between different substrates.
(A) electrons.
(B)
(C) NH₂ groups.
(D) one carbon units.
(E) acyl groups.

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相關試卷

32.Tetrahydrofolate (THF) and its derivatives shuttle _____ between different substrates.(A) electrons.(B)(C) NH2 groups.(D) one carbon units.(E) acyl groups.

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相關試題

相關試卷

32.Tetrahydrofolate (THF) and its derivatives shuttle _____ between different substrates.
(A) electrons.
(B)
(C) NH₂ groups.
(D) one carbon units.
(E) acyl groups.