The human body uses 20 amino acids to
form all types of proteins.
Amino acids do not need to be assembled
in a particular order.
Amino acids form a polypeptide chain via
carbon-carbon bonds.
tRNA is attached to specific proteins in the
cell’s cytoplasm.
which one is true?
The correct statement is:
The human body uses 20 amino acids to form all types of proteins.
The statement that is true is: The human body uses 20 amino acids to form all types of proteins.
To determine which statement is true, we need to analyze each statement individually:
Statement 1: The human body uses 20 amino acids to form all types of proteins.
This statement is true. Proteins are composed of long chains of amino acids, and there are 20 different types of amino acids that the human body uses to build proteins.
Statement 2: Amino acids do not need to be assembled in a particular order.
This statement is false. The sequence of amino acids in a protein is crucial for its structure and function. The specific order in which the amino acids are assembled determines the protein's shape, properties, and how it interacts with other molecules.
Statement 3: Amino acids form a polypeptide chain via carbon-carbon bonds.
This statement is false. Amino acids are connected by peptide bonds, which form between the carboxyl group of one amino acid and the amino group of another amino acid. Peptide bonds link amino acids into a linear chain called a polypeptide.
Statement 4: tRNA is attached to specific proteins in the cell's cytoplasm.
This statement is false. Transfer RNA (tRNA) is not attached to proteins directly. tRNA molecules are responsible for carrying specific amino acids to the ribosomes, where they are used to build proteins through the process of translation.
Therefore, the true statement is: The human body uses 20 amino acids to form all types of proteins.