AP BIOLOGY

Detailed explanation-1: -Glycolysis is a cytoplasmic pathway which breaks down glucose into two three-carbon compounds and generates energy. Glucose is trapped by phosphorylation, with the help of the enzyme hexokinase. Adenosine triphosphate (ATP) is used in this reaction and the product, glucose-6-P, inhibits hexokinase.

Detailed explanation-2: -ATP inhibits the phosphofructokinase reaction by raising the K m for fructose‐6‐phosphate. AMP activates the reaction. Thus, when energy is required, glycolysis is activated.

Detailed explanation-3: -The process of photosynthesis also makes and uses ATP-for energy to build glucose! ATP, then, is the useable form of energy for your cells. ATP is commonly referred to as the “energy currency” of the cell.

Detailed explanation-4: -Glycolysis produces only two net molecules of ATP per 1 molecule of glucose. However, in cells lacking mitochondria and/or adequate oxygen supply, glycolysis is the sole process by which such cells can produce ATP from glucose.

Detailed explanation-5: -One glucose molecule yields four ATP molecules in total during glycolysis. Since 2 ATP molecules are used up in the first phase of glycolysis, there is a net gain of 2 ATP molecules.