AP BIO- Metabolism Questions And Answers With Complete Solutions

What is the relationship between photosynthesis and cell respiration? Be sure to include the overall chemical equation for both reactions correct answer: The relationship between cell respiration and photosynthesis is an inverse relationship, that both sides are opposite each other. In photosynthesis, CO2 is taken in, and O2 is excreted, while in cellular respiration, C02 in excreted, and O2 is needed for the reaction to commence. Distinguish between oxidation and reduction. Why are these processes significant to cellular respiration? correct answer: Oxidation is removing an H, loss of an electron, and releasing energy, thus it is exergonic. Reduction is the opposite, adding a Hydrogen atom, gaining an electron, and storing energy, it is exergonic. They are both redox reactions, and thus essential to cellular respiration. This is because they release energy at they break down organic molecules. In the following balanced chemical equation, C6H12O6 + 6O2 → 6CO2 + 6H2O which element is reduced? Which is oxidized? correct answer: The element that is reduced is the O2 (The 6O2), into the 6H2O, and the element that is oxidized is the C6H12O6, to the CO2. Where does glycolysis take place in the cell? What are the starting materials of glycolysis, and what is produced in glycolysis? correct answer: Glycolysis takes place in the cytosol of the cell. The starting materials for glycolysis Glucose, 2 NAD+, 2 ADP + 4P. The outputs of glycolysis are 2 Pyruvate, 2 ATP, and 2 NADH. How is the exergonic hydrolysis of ATP coupled to the endergonic reactions of the energy-investment phase of glycolysis? How are the exergonic reactions of the energy-payoff phase of glycolysis coupled to the endergonic synthesis of ATP and N