6 CO_2, 30 ATP, and 2 pyruvate. In glycolysis, for each molecule of glucose oxid

Question

6 CO_2, 30 ATP, and 2 pyruvate. In glycolysis, for each molecule of glucose oxidized to pyruvate. A) two molecules of ATP are used and two molecules of ATP are produced. B) two molecules of ATP are used and four molecules of ATP are produced. C) four molecules of ATP are used and two molecules of ATP are produced. D) two molecules of ATP are used and six molecules of ATP are produced. E) six molecules of ATP are used and six molecules of ATP are produced. Why is glycolysis described as having an investment phase and a payoff phase? A) It bot splits molecules and assembles molecules. B) It attaches and detaches phosphate groups. C) It uses glucose and generates pyruvate. D) It shifts molecules from cytosol to mitochondrion. E) It uses stores ATP and then forms a net increases in ATP. Which of the following intermediary metabolites enters the citric acid cycle and is formed part, by the removal of a carbon (CO_2) from one molecule of pyruvate? A) lactate B) glyceraldehydes-3-phosphate B) glyceraldehydes-3-phosphate C) oxaloacetate D) acetyl CoA E) citrate During cellular respiration, acetyl CoA accumulates in which location? A) cytosal B) mitochondrial outer membrane C) mitochondrial inner membrane D) mitochondrial intermembrane space E) mitochondrial matrix How many carbon atoms are fed into the citric acid cycle as a result of the oxide molecule of pyruvate? A) two B) four C) six D) eight E) ten Carbon dioxide (CO_2) is released during which of the following stages of respiration? A) glycolysis and the oxidation of pyruvate to acetyl CoA B) oxidation of pyruvate to acetyl CoA and the citric acid cycle C) the citric acid cycle and oxidative phosphorylation D) oxidative phosphorylation and fermentation E) fermentation and glycolysis

Explanation / Answer

Answer:

1) in glycolysis for each molecule of glucose oxidized to Pyruvate

Ans: B) two molecules of ATP are used and four molecules of ATP are produced (net ATP generated = 2)

2) Why is glycolysis described as having an investment phase and a payoff phase?

Ans: E) It uses stored ATP and then forms a net increase in ATP

3) Which of the following intermediary metabolites enter the citric acid cycle and is formed part , by the removal of carbon (CO2) from one molecule of Pyruvate.

Ans: D) acetyl CoA (a carboxyl group is released from pyruvate and pyruvate is converted into acetyl CoA)

4) During cellular respiration, acetyl CoA accumulates in which location?

Ans: E) Mitochondrial matrix

5) How many carbon atoms are fed into the citric acid cycle as a result of the oxidation of one molecule of pyruvate?

Ans: A) Two

6) Carbon dioxide is released during which of the following stages of respiration?

Ans: B) oxidation of pyruvate to acetyl CoA and the citric acid cycle.

Related Questions

Navigate

• Browse (All)
• Browse 6
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.