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When considering the metabolism of the glucose molecule up tothe point just prior to the electron transport chain and ATPproduction, most of the energy from the original glucose moleculeis present within the cell in the form of ________.

The choices are one of these:

A) ATP

B) acetyl-CoA

C) NADH

D) citrate

E) FADH2

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Jamar Ferry
Jamar FerryLv2
28 Sep 2019

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Related questions

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?

Oxidative phosphorylation is the final stage of cellular respiration and the main pathway of aerobic energy generation from glucose. Which of the following statements is NOT true?

a. NADH and FADH2 are used as ‘input’ into the electron transport chain

b. The electron transport chain produces a proton gradient across the inner mitochondrial membrane

c. FADH2 stores less energy than NADH

d. The electron transport chain is made up of several membrane protein complexes

e. ATP synthesis by chemiosmosis requires about 30 protons per ATP molecule

QUESTION 1

Which of the following is the correct order of the three stages of cellular respiration?

a.

Krebs cycle, glycolysis, electron transport
b.

electron transport, glycolysis, Krebs cycle
c.

Krebs cycle, electron transport, glycolysis
d.

glycolysis, Krebs cycle, electron transport
e.

electron transport, Krebs cycle, glycolysis

1 points

QUESTION 2

Consider a bacterial cell that performs anaerobic respiration. If that bacterial cell had access to six molecules of glucose to use, how many ATP molecules would it be able to produce?

a.

2
b.

34
c.

36
d.

6
e.

12

1 points

QUESTION 3

The oxygen that organisms need to live is used exclusively in which of the following metabolic pathways?

a.

Electron transport chain
b.

Anaerobic respiration
c.

Glycolysis
d.

Krebs cycle
e.

ATP-Synthase

1 points

QUESTION 4

The electron transport chain uses the energy in NADH and FADH2 to pump H+ ions from the matrix to the innermembrane space. The H+ gradient is then used to power ATP-Synthase. Enough H+ is pumped from the energy in a molecule of NADH to produce ______ ATP molecules, while enough H+ is pumped from the energy in a FADH2 molecule to produce ______ ATP molecules.

a.

three; two
b.

three; three
c.

two; two
d.

two; three

1 points

QUESTION 5

Which of the following list contains only products of cellular respiration?

a.

glucose, oxygen, ADP
b.

ATP, carbon dioxide
c.

oxygen, ADP, carbon dioxide
d.

ATP, glucose, oxygen
e.

glucose, ATP

1 points

QUESTION 6

What powers the enzyme ATP-Synthase?

a.

NADH molecules
b.

oxygen (O2)
c.

ATP
d.

NADH and FADH2 molecules
e.

The H+ gradient between the matrix and inner-membrane space

1 points

QUESTION 7

Organisms exist which are able to survive using only glycolysis (i.e. without using oxidative phosphorylation).

True

False

1 points

QUESTION 8

Each ADP molecule contains ________ phosphates, and each ATP molecule contains ________ phosphates.

a.

three; three
b.

two; two
c.

one; two
d.

two; three
e.

one; three

1 points

QUESTION 9

Adding a phosphate group to ADP to form ATP is an endergonic reaction.

True

False

1 points

QUESTION 10

The majority of ATP produced during cellular respiration is produced during glycolysis.

True

False

1 points

QUESTION 11

Glycolysis occurs:

a.

on enzymes located in the inner-membrane.
b.

in the cytosol.
c.

in the inner-membrane space.
d.

in the nucleus of the cell.
e.

in the matrix of mitochondria.

1 points

QUESTION 12

Muscle soreness associated with strenuous exercise is due to:

a.

the production of alcohol during anaerobic respiration.
b.

a buildup of lactic acid.
c.

an excessive amount of ATP that builds up during exercise.
d.

the large amounts of CO2 building up in the muscle.

1 points

QUESTION 13

A required reactant for glycolysis is:

a.

the electron transport chain.
b.

carbon dioxide.
c.

oxygen.
d.

NAD+.
e.

mitochondria.

1 points

QUESTION 14

NADH is produced in all of the following except:

a.

the electron transport chain.
b.

the Krebs cycle.
c.

glycolysis.

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