Biology 1202B Lecture Notes - Lecture 8: Intermembrane Space, Cellular Respiration, Pyruvic Acid

42 views2 pages

amberfly575

6 Feb 2017

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

Glycolysis: glucose 2x pyruvate, gain of 2 atp and 2 nadh, no carbon is lost. Pyruvate oxidation/citric cycle: 2x pruvate acetyl-coa + co2. Gain of 1 nadh per pyruvate: 2x acetyl-coa co2. Gain of 3 nadh, 1 atp & 1 fadh2 per acetyl-coa: carbons are lost. Only 4 atp total so far (after both processes) the energy is contained in the high energy containers (nadh) and (fadh2) Glucose has been completely oxidized to co2. All of the remaining energy is in the electron carriers nadh and fadh2 (good at being oxidized and reduced) This energy (in the form of electrons) will be passed along the electron transport chain by a series of redox reactions. Electrons will move down the chain until ultimately reducing o2: o2 is the final electron accepter. As we increase or decrease effort the oxygen and the carbon dioxide levels increase/decrease at the same rate. Electron transport takes place on the inner mitochondrial membrane.

Related Questions

Which of the following is not a net product of the citric acid cycle for each molecule of pyruvate generated in glycolysis?

Select one:

a. 1 ATP (GTP)

b. 1 acetyl coA

c. 3 NADH

d. 1 FADH2

Question 2

Which of the following is NOT an end product for an acetyl group that enters the citric acid cycle?

Select one:

a. ATP

b. NADH

c. FADH2

d. oxaloacetate

Question 3

Once they have been processed through the citric acid cycle, the acetyl-CoA molecules from a single glucose molecule produce:

Select one:

a. 2 ATP, 6 NADH, 4 CO₂.

b. 6 NADH, 6 GTP.

c. 6 FADH₂, 2 ATP, 6 CO₂.

d. 6 GTP, 6 FADH₂.

e. 4 CO₂, 6 FADH₂, 2 ATP.

Question 4

The products of the citric acid cycle breaking down 2 acetyl-CoA include 2 ATP (converted from GTP), 6 NADH and 2 FADH2.

Select one:

True

False

The reduced nucleotides NADH and FADH are converted to ATP via the electron transport chain and oxidative phosphorylation. The most widely accepted values among biochemists are shown.

Nucleotide Output	ATP Output
NADH	2.5
FADH₂	1.5

Each acetyl CoA entering the citric acid cycle produces two CO₂, three NADH, one FADH₂, and one GTP (converted directly to ATP in the cell). Taking into consideration the conversion of reduced nucleotides to ATP, what is the total number of ATP produced by one glucose (2 Acteyl CoA) going through the citric acid cycle?

Carbohydrates are broken down into glucose monomer and dimers. Glucose is converted to pyruvate and then to acetyl CoA. Acetyl CoA enters the citric acid cycle and is broken down to CO2 and in the process produces NADH & FADH2, which is utilized in the generation of ATP via the electron transport chain. Why does the cell go through this elaborate pathway to convert glucose to carbon dioxide and water and in the process generate ATP? Why not use a simpler and shorter mechanism to breakdown glucose?

Biology 1202B Lecture Notes - Lecture 8: Intermembrane Space, Cellular Respiration, Pyruvic Acid

Document Summary

Get access

Related Documents

Biology 1202B Lecture Notes - Lecture 5: Acetyl-Coa, Cellular Respiration, Atp Synthase

Biology 1202B Lecture Notes - Lecture 9: Coenzyme Q10, Cytochrome C, Oxidative Phosphorylation

Biology 1202B Lecture Notes - Lecture 9: Intermembrane Space, Nadh Dehydrogenase, Phosphofructokinase

Related Questions