Exam 7: Cellular Respiration and Fermentation

In the complete oxidation of a molecule of glucose (C₆H₁₂O₆)in aerobic cellular respiration,how many molecules of ATP are produced by substrate-level phosphorylation?

Which kind of metabolic poison would most directly interfere with glycolysis?

Which catabolic processes may have been used by cells on ancient Earth before free oxygen became available?

The complete oxidation of two molecules of glucose (C₆H₁₂O₆)in cellular respiration produces about how many molecules of ATP?

A mutation in yeast knocks out the ability of cells to convert pyruvate to ethanol.How might this mutation affect these yeast cells?

In addition to ATP,what are the products of glycolysis?

Glycolysis results in a net production of which of the following molecules from each molecule of glucose?

Which of the following molecules donates electrons directly to the electron transport chain at the highest energy level?

In the presence of oxygen,the pyruvate can be catabolized in the citric acid cycle.First,however,the pyruvate (1)loses a carbon, (2)is oxidized to form a two-carbon compound,which (3)is covalently bound to coenzyme A.These three steps result in the formation of

In mitochondria,exergonic redox reactions

In a mitochondrion,if the matrix ATP concentration is high and there is no proton gradient across the inner mitochondrial membrane to generate a proton-motive force,then what might you expect to occur?

Figure 7.1 -How would you predict that blocking the oxidation of pyruvate would affect the levels of oxaloacetate and citrate in the citric acid cycle (see Figure 7.1)?

Which of the following sequences represents the correct order in which metabolic reactions occur during the complete oxidation of glucose through aerobic respiration?

Which chemical process generates the ATP produced in the citric acid cycle?

Catabolism of each molecule of glucose in glycolysis is associated with a net consumption of which of the following other molecules?

Energy released by the electron transport chain is used to pump H⁺ into which location in eukaryotic cells?

What is the source of the energy used to generate the proton gradient across the inner mitochondrial membrane?

Which of the following statements correctly describes how ATP is involved in the oxidation of one molecule of glucose in glycolysis?

Why are carbohydrates and fats considered high-energy foods?

Which of the following metabolic pathways is common to both aerobic cellular respiration and anaerobic fermentation?