trees in bloom shed their leaves in winter to survive the harsh winters
Answer:
Explanation:
A peptide bond is a chemical bond formed between two molecules when the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water (H2O). ... Polypeptides and proteins are chains of amino acids held together by peptide bonds, as is the backbone of PNA.
Answer:
provide structural support , speed biochemical reactions
Explanation:
By the heat of the enegry
