Which statement is true?(1 point)

Question

Responses

Amino acids form a polypeptide chain via carbon-carbon bonds.
Amino acids form a polypeptide chain via carbon-carbon bonds.

Amino acids do not need to be assembles in a particular order.
Amino acids do not need to be assembles 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.

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 is:

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

This statement is correct because the human body indeed uses 20 standard amino acids to synthesize a wide variety of proteins necessary for various functions. The other statements are incorrect for the following reasons:

1. Amino acids form a polypeptide chain via carbon-carbon bonds. - This is false because amino acids are linked by peptide bonds, which are formed between the carboxyl group of one amino acid and the amino group of another, not by carbon-carbon bonds.

2. Amino acids do not need to be assembled in a particular order. - This is incorrect because the specific sequence of amino acids in a polypeptide chain is crucial for the protein's structure and function.

3. tRNA is attached to specific proteins in the cell's cytoplasm. - This statement is misleading; tRNA (transfer RNA) is not attached to proteins but rather transports specific amino acids to the ribosome during protein synthesis.