i think that before the Krebs cycle begins, pyruvic acid, which has three carbon atoms, is split apart and combined with an enzyme known as CoA.
Out of the choices given, the reason why Kathy's body feels sore and she has pain in her limbs after vigorously exercising is an accumulation of lactic acid in the muscles of her limbs. The correct answer is A.
Answer:
Two amino acids are joined together by losing a water molecule, or hydrolysis.
Explanation:
A peptide bond is formed by binding two or more amino acids. This is a kind of covalent bond, wherein the <u>carboxylic group</u> of one amino acid and an <u>amino group</u> of another amino acid is linked together with a <u>loss of water molecule or hydrolysis during the process</u>. A polypeptide chain is now then composed of multiple peptide bonds, from binding amino acids (also known as <u>residues</u> at this point), with a linear configuration.
A closer look into this process involves the <u>α-amino group as the beginning</u> of the polypeptide series and <u>ending with the α-carboxyl group</u>. This also serves as the primary structure of the protein.
