What is the name of the enzyme that adds CCA to the 3' end of tRNAs?

A. tRNA nucleotidyltransferase
B. Aminoacyl-tRNA synthetase
C. RNA polymerase

D. Peptidyl transferase


A

Biology & Microbiology

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Which of the following has only one living species characterized by fan-shaped, deciduous leaves?

a. Conifers b. Ginkophytes c. Cycads d. Gnetophytes

Biology & Microbiology

Biodiversity refers to _____

a. genetic diversity b. species diversity c. ecosystem diversity d. all of these

Biology & Microbiology

DNA codes for the production of

a. proteins. b. minerals. c. inorganic molecules. d. vital gasses. e. water.

Biology & Microbiology

Nutritionally defective mutants can be detected by the technique of

a. selection. b. transposon mutagenesis. c. replica plating. d. transversion.

Biology & Microbiology