Question

Which statement is true?(1 point) Responses Amino acids form a polypeptide chain via carbon-carbon bonds. Amino acids form a polypeptide chain via carbon-carbon bonds. tRNA is attached to specific proteins in the cell’s cytoplasm. tRNA is attached to specific proteins in the cell’s cytoplasm. Amino acids do not need to be assembled in a particular order. Amino acids do not need to be assembled in a particular order. The human body uses 20 amino acids to form all types of proteins. The human body uses 20 amino acids to form all types of proteins.

Answer 1

The true statement among the given options is: The human body uses 20 amino acids to form all types of proteins.

To clarify the other statements:

• Amino acids form a polypeptide chain via peptide bonds (specifically, covalent bonds between the amino group of one amino acid and the carboxyl group of another), not carbon-carbon bonds.
• tRNA (transfer RNA) is not attached to proteins in the cytoplasm; instead, it carries amino acids to the ribosome during protein synthesis.
• Amino acids must be assembled in a specific order determined by the mRNA sequence to form functional proteins.