Chapter 7 - ANSWERS TO CONCEPT CHECKS (2024)

FAQs

What effect would an absence of O2 have on the process of oxidative phosphorylation? ›

If oxygen isn't there to accept electrons (for instance, because a person is not breathing in enough oxygen), the electron transport chain will stop running, and ATP will no longer be produced by chemiosmosis.

Oxidative phosphorylation is the final stage of aerobic cellular respiration. There are two substages of oxidative phosphorylation, Electron transport chain and Chemiosmosis. In these stages, energy from NADH and FADH₂, which result from the previous stages of cellular respiration, is used to create ATP.

This potential is then used to drive ATP synthase and produce ATP from ADP and a phosphate group. Biology textbooks often state that 38 ATP molecules can be made per oxidized glucose molecule during cellular respiration (2 from glycolysis, 2 from the Krebs cycle, and about 34 from the electron transport system).

departmentalization by customer. When a company looks to departmentalize by areas of business like Japan, America, and Australia it is exemplifying ______. d. Departmentalization by customer allows the firm to deal efficiently with unique customers or customer groups.

In the absence of oxygen, cells generate ATP through glycolysis, which is a common process in both aerobic and anaerobic respiration. E.g. Because the oxygen supply is insufficient for oxidative phosphorylation during strenuous exercise, pyruvate is reduced to lactate by lactate dehydrogenase after glycolysis.

During oxidative phosphorylation, electrons derived from NADH and FADH₂ combine with O₂, and the energy released from these oxidation/ reduction reactions is used to drive the synthesis of ATP from ADP.

Answer and Explanation: During the absence of oxygen, anaerobic cellular respiration occurs via two main steps: glycolysis and fermentation (this follows either the ethanol or lactic acid pathways). Glycolysis occurs anaerobically, producing pyruvate molecules.

Final answer: 6 ATP are formed through substrate-level phosphorylation from one molecule of glucose when it is completely oxidized.

Cellular respiration can occur both aerobically (using oxygen), or anaerobically (without oxygen). During aerobic cellular respiration, glucose reacts with oxygen, forming ATP that can be used by the cell. Carbon dioxide and water are created as byproducts.

Photosynthesis is the process where plants create glucose and oxygen out of sunlight, carbon dioxide, and water. Cellular respiration is the process that breaks down glucose into usable energy for the cell. They are opposite processes that fuel each other in a never-ending cycle.

Does photosynthesis release energy? ›

After the process is complete, photosynthesis releases oxygen and produces carbohydrate molecules, most commonly glucose. These sugar molecules contain the energy that living things need to survive.

What are the products of cellular respiration? The final end products of cellular respiration are ATP and H2O. Glycolysis produces two pyruvate molecules, four ATPs (a net of two ATP), two NADH, and two H2O.

A manager's span of control (sometimes called span of management) is the number of employees the manager directly supervises. It can be as narrow as two or three employees or as wide as 50 or more. In general, the larger the span of control, the more efficient the organization.

What are two weaknesses of functional departmentalization? Decision making across departments is slow. It requires greater coordination among departments.

An advantage of departmentalization by customer is that employees from all job functions of the department become experts at serving the needs of that customer group. It puts the customer first.

If there were no oxygen present in the mitochondrion, the electrons could not be removed from the system, and the entire electron transport chain would back up and stop. The mitochondria would be unable to generate new ATP in this way, and the cell would ultimately die from lack of energy.

However, as cells undergo hypoxia, ATP production is reduced due to reduced mitochondrial metabolism. Hypoxia then presents a “non-ideal state” in which passive distribution of ATP is insufficient to provide subcellular components with the energy required for their respective processes.

Without oxygen, the electrons will be backed up, eventually causing the electron transport chain to halt. This will cause the products of glycolysis to go through fermentation instead of going to the citric acid cycle.