Exam 9: Cellular Respiration and Fermentation

Fatty acids typically have an even number of carbons. They are catabolized by a process called beta- oxidation. The end- products of the metabolic pathway are acetyl groups of acetyl CoA molecules. What is the most likely fate of the acetyl groups?

The chemiosmotic hypothesis is an important key to understanding general metabolism because

The inner mitochondrial membrane normally

Which metabolic pathway is common to both cellular respiration and fermentation?

Which of the following events takes place in the electron transport chain?

In the energy- yielding phase of glycolysis, energy is extracted in the form of

When one of the eight Krebs cycle intermediates is added to the respiration medium of living cells, like yeast, what happens to the rates of ATP and carbon dioxide production?

What electron carriers) function in the Krebs cycle?

Following glycolysis and the Krebs cycle and before the electron transport chain and oxidative phosphorylation, the carbon skeleton of glucose has been broken down to CO₂. Most of the energy from the original glucose at that point is still in the form of

The energy of electron transport serves to move translocate) protons to the outer mitochondrial compartment. How does this help the mitochondrion to produce energy?

A metabolic pathway, glycolysis, is active when cellular energy levels are___________; the regulatory enzyme, phosphofructokinase, is _______by ATP.

Why might adding inorganic phosphate to a reaction mixture where glycolysis was rapidly proceeding help sustain the metabolic pathway?

The glucose molecule has a great deal of energy in its

C₆H₁₂O₆ + 6 O₂ -6 CO₂ + 6 H₂O + Energy -Which of the following statements describes the pathway shown above?

Substrate- level phosphorylation occurs within a metabolic pathway where sufficient energy is released by a given chemical reaction to drive the synthesis of ATP from ADP and phosphate. Substrate- level phosphorylation is seen in which metabolic pathways)?

Canine phosphofructokinase PFK) deficiency afflicts springer spaniels, affecting an estimated 10% of the breed. PFK is the glycolytic enzyme that phosphorylates fructose- 1- phosphate and catalyzes the committed step in glycolysis. Given its critical role in glycolysis, one implication of the genetic defect resulting in PFK deficiency in dogs is

Figure 9.3 -Refer to Figure 9.3. Which of these statements concerning the following reaction is true? Malate + NAD⁺ -oxaloacetate + NADH + H⁺

Pyruvate oxidation occurs in

Which of the following is true in terms of metabolism?

A cell has enough available ATP to meet its needs for about 30 seconds. What is likely to happen when an athlete exhausts his or her ATP supply?