BIOC13H3 Lecture Notes - Lecture 7: Facultative Anaerobic Organism, Oxidative Phosphorylation, Pyruvic Acid

QUESTION 1

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

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?

1 points

QUESTION 3

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

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.

1 points

QUESTION 5

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

1 points

QUESTION 6

What powers the enzyme ATP-Synthase?

1 points

QUESTION 7

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

True

False

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QUESTION 8

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

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:

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QUESTION 12

Muscle soreness associated with strenuous exercise is due to:

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QUESTION 13

A required reactant for glycolysis is:

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QUESTION 14

NADH is produced in all of the following except:

Question 1 Organisms exist which are able to survive using only glycolysis (i.e. without using oxidative phosphorylation).
True
False

Question 2 Glycolysis occurs:
a. in the matrix of mitochondria.
b. in the inner-membrane space.
c. in the cytosol.
d. in the nucleus of the cell.
e. on enzymes located in the inner-membrane.

Question 3 Muscle soreness associated with strenuous exercise is due to:
a. the large amounts of CO2 building up in the muscle.
b. an excessive amount of ATP that builds up during exercise.
c. a buildup of lactic acid.
d. the production of alcohol during anaerobic respiration.

Question 4 Each ADP molecule contains ________ phosphates, and each ATP molecule contains ________ phosphates.
a. two; three
b. two; two
c. three; three
d. one; three
e. one; two

Question 5 The oxygen that organisms need to live is used exclusively in which of the following metabolic pathways?
a. Glycolysis
b. Electron transport chain
c. Krebs cycle
d. Anaerobic respiration
e. ATP-Synthase

Question 6 NADH is produced in all of the following except:
a. the electron transport chain.
b. glycolysis.
c. the Krebs cycle.

Question 7 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. 36
b. 6
c. 12
d. 34
e. 2

Question 8 The majority of ATP produced during cellular respiration is produced during glycolysis.
True
False

Question 9 What powers the enzyme ATP-Synthase?
a. The H+ gradient between the matrix and inner-membrane space
b. ATP
c. oxygen (O2)
d. NADH molecules
e. NADH and FADH2 molecules

Question 10 Which of the following list contains only products of cellular respiration?
a. ATP, glucose, oxygen
b. ATP, carbon dioxide
c. oxygen, ADP, carbon dioxide
d. glucose, ATP
e. glucose, oxygen, ADP

Question 11 Adding a phosphate group to ADP to form ATP is an endergonic reaction. True False

Question 12 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. two; three
b. three; three
c. three; two
d. two; two

Question 13 Which of the following is the correct order of the three stages of cellular respiration?
a. glycolysis, Krebs cycle, electron transport
b. Krebs cycle, electron transport, glycolysis
c. electron transport, Krebs cycle, glycolysis
d. electron transport, glycolysis, Krebs cycle
e. Krebs cycle, glycolysis, electron transport

Question 14 A required reactant for glycolysis is:
a. carbon dioxide.
b. mitochondria.
c. NAD+.
d. the electron transport chain.
e. oxygen.

Glycolysis occurs:
a. only in the presence of oxygen
b. only in eukaryotic cells
c. whether or not oxygen is present
d. in mitochondria
e. in cells without the assistance of enzymes

Glycolysis:
a. releases all the of the chemical energy in the original glucosemolecule
b. occurs in mitochondria
c. produces two molecules that contain much of the chemical energyin the original glucose molecule
d. does not produce any ATP molecules
e. does not require enzymes

The citric acid cycle:
a. produces carbon dioxide. Most of the chemical energy istransferred to the reduced coenzyme NADH
b. directly produces most of ATP formed by breakdown of a glucosemolecule
c. is located in the cytoplasm
d. occurs in both prokaryotic and eukaryotic cells
e. does not require enzymes


In anaerobic environments, yeast cells:
a. cannot make any ATP
b. continue to make ATP by oxidative phosphorylation
c. make more ATP than they do when they are in an aerobicenvironment
d. transfer electrons from NADH to pyruvate so that glycolysis cancontinue
e. immediately die

I have looked everywhere in the chapter and cannot quite find theanswers. These questions seem ambiguous; can someone enlighten me?