Question

Which statement is true?(1 point)
Responses

Amino acids do not need to be assembled in a particular order.
Amino acids do not need to be assembled in a particular order.
tRNA is attached to specific proteins in the cell’s cytoplasm.
tRNA is attached to specific proteins in the cell’s cytoplasm.
Amino acids form a polypeptide chain via carbon-carbon bonds.
Amino acids form a polypeptide chain via carbon-carbon bonds.
The human body uses 20 amino acids to form all types of proteins.

Answer 1

"The human body uses 20 amino acids to form all types of proteins." is true.

Brief corrections:
- Amino acids must be assembled in a specific sequence to determine a protein’s structure and function.
- tRNA is charged with specific amino acids (by aminoacyl‑tRNA synthetases), not attached to proteins.
- Amino acids are linked by peptide (amide) bonds (C–N), not carbon–carbon bonds.