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