Biology
NULL
Medium
Question
There are mainly __________ types of tRNA?
A
170
B
20
✓ Official correct answer
C
25
D
15
Community credibility
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A
170
No member explanations yet for this option.
B
20
No member explanations yet for this option.
C
25
No member explanations yet for this option.
D
15
No member explanations yet for this option.
Explanation
There are mainly about 20 major types of tRNA, corresponding to the 20 standard amino acids used in protein synthesis, each carrying a specific amino acid to the ribosome.