Concept explainers
To determine: The role of molecular oxygen in photosynthesis.
Introduction: Photosynthesis is a process in which solar energy is used for the formation of chemical energy that is glucose from the carbon dioxide and water. This process takes place in the thylakoid membrane of chloroplast. This thylakoid membrane contains two types of photosystem units: PS I that absorb 700 nm of light and PS II that absorb 680 nm of light. Electron transport occurs from photosystem II. When the light of 680 nm strikes on photosystem II, the water molecules present near the photosystem II splits into hydrogen ion (2H+) and evolve as oxygen gas.
To determine: The role of molecular oxygen in aerobic
Introduction: Aerobic cellular respiration is the process by which energy is produced in a cell. Energy is released from the breakdown of glucose in cellular respiration that is used by the cell for performing various life processes. Mitochondria are considered as the powerhouses of the cell, which synthesizes energy in the form of ATP.
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Chapter 9 Solutions
Biology (MindTap Course List)
- Photosynthesis and aerobic cellular respiration both rely on electron transport chains to generate ATP. Which of the following does not correctly identify similarities and differences in the ETCs of these processes? a) Electrons delivered to the ETC are used to generate a proton gradient across the membrane b) In photosynthesis, the facilitated diffusion of protons across the membrane generates ATP and glucose molecules; in cellular respiration, this process generates ATP c) In photosynthesis, electrons are delivered to the ETC by NADPH; in cellular respiration, electrons are delivered to the ETC by NADH and FADH2 d) In prokaryotes, active transport moves protons across the cell’s plasma membrane during photosynthesis and cellular respirationarrow_forwardWhat are the reactants of the electron transport chain?arrow_forwardWhich of the following is NOT found in BOTH aerobic respiration and photosynthesis pathways? a) ATP b) Electron transport proteins c) NADPH d) Chemiosmosis e) ATP Synthasearrow_forward
- Why is oxygen important in aerobic cellular respiration?arrow_forwardHow does cyclic electron transport lead to the production of ATP?arrow_forwardAerobic respiration takes place in three stages: transition, Krebs cycle, and electron transport. What is each stage called and where in the mitochondrion does each stage take place? What happens during each stage, what are the reactants and what are the products?arrow_forward
- What role does NADH play? Why is ATP important to the cell?arrow_forwardWhat is the role of an electron transport chain?arrow_forwardWhat molecule is the final electron acceptor in the electron transport chain (ETC)? What byproduct of aerobic cellular respiration is formed in the process?arrow_forward
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