AP BIOLOGY

Detailed explanation-1: -Recall, for instance, that cells split one glucose molecule into two pyruvate molecules by way of a ten-step process called glycolysis. This coordinated series of chemical reactions is an example of a metabolic pathway in which the product of one reaction becomes the substrate for the next reaction.

Detailed explanation-2: -Cellular metabolism is regulated by the secretion of TSH release from the anterior pituitary gland. This hormone enters the circulation and stimulates the thyroid gland to produce both tri-iodothyronine (T3) and thyroxine (T4).

Detailed explanation-3: -Metabolism (pronounced: meh-TAB-uh-liz-um) is the chemical reactions in the body’s cells that change food into energy. Our bodies need this energy to do everything from moving to thinking to growing. Specific proteins in the body control the chemical reactions of metabolism.

Detailed explanation-4: -Two types of metabolic reactions take place in the cell: ‘building up’ (anabolism) and ‘breaking down’ (catabolism). Catabolic reactions give out energy. They are exergonic. In a catabolic reaction large molecules are broken down into smaller ones.

Detailed explanation-5: -Metabolic reactions happen in specific locations in the cell. Glycolysis, fatty acid synthesis, and glycogen synthesis happen in the cytoplasm, along with some steps of amino acid breakdown. Several metabolic pathways are in specific locations inside of mitochondria.