AP BIOLOGY

Detailed explanation-1: -Answer and Explanation: Insulin is a protein which serves as a chemical messenger. It is released by the pancreas and it signals high glucose levels to target cells.

Detailed explanation-2: -Protein has many roles in your body. It helps repair and build your body’s tissues, allows metabolic reactions to take place and coordinates bodily functions. In addition to providing your body with a structural framework, proteins also maintain proper pH and fluid balance.

Detailed explanation-3: -Proteins are the end products of the decoding process that starts with the information in cellular DNA. As workhorses of the cell, proteins compose structural and motor elements in the cell, and they serve as the catalysts for virtually every biochemical reaction that occurs in living things.

Detailed explanation-4: -The basic structural unit of protein is amino acid. The molecules of either same or different amino acids join together to form a chain known as polypeptide chain. Many polypeptide chains join together to form a protein, which is a complex structure.