Which of the Following Is True of the Relationship Between

question 13

Multiple Choice

Which of the following is true of the relationship between amino acids, tRNAs and aminoacyl-tRNA synthetases?

• A) All amino acids have one tRNA and one aminoacyl-tRNA synthetase.
• B) All amino acids have more than one tRNA and each tRNA has its own aminoacyl-tRNA synthetase.
• C) Some amino acids have more than one tRNA, but these have only one aminoacyl-tRNA synthetase.
• D) Some amino acids have more than one tRNA and each tRNA has its own aminoacyl-tRNA synthetase.

---

Definitions:

Uracil

(uracil) A nitrogenous pyrimidine base found in RNA.

Adenine

A purine nucleobase that pairs with thymine in DNA and uracil in RNA, essential for the structure of nucleic acids.

Thymine

A nitrogenous base found in DNA, pairing with adenine through two hydrogen bonds to assist in stabilizing the nucleic acid structures.

Citrulline

An amino acid that plays a significant role in the urea cycle, helping to eliminate ammonia from the body.