Question 1

The three main biochemical pathways of cellular respiration are

Accepted Answer

A)  glycolysis, photosystems, and carbon reactions. 
B)  carbon reactions, Krebs cycle, and light reactions. 
C)  Krebs cycle, carbon reactions, and electron transport chain. 
D)  glycolysis, Krebs cycle, and electron transport chain. 
E)  light reactions, carbon reactions, and electron transport chain. 
A)  glycolysis, photosystems, and carbon reactions. 
B)  carbon reactions, Krebs cycle, and light reactions. 
C)  Krebs cycle, carbon reactions, and electron transport chain. 
D)  glycolysis, Krebs cycle, and electron transport chain. 
E)  light reactions, carbon reactions, and electron transport chain.

Question 2

In eukaryotic cells,the electron transport chain occurs in the

Accepted Answer

A)  lysosome. 
B)  nucleus. 
C)  cytoplasm. 
D)  ribosome. 
E)  mitochondrion. 
A)  lysosome. 
B)  nucleus. 
C)  cytoplasm. 
D)  ribosome. 
E)  mitochondrion.

Question 3

The Krebs cycle continues the breakdown of glucose and

Accepted Answer

A)  provides intermediates for manufacturing fats and amino acids. 
B)  replicates DNA. 
C)  provides oxygen to cells. 
D)  manufactures carbohydrates. 
E)  All answers are correct. 
A)  provides intermediates for manufacturing fats and amino acids. 
B)  replicates DNA. 
C)  provides oxygen to cells. 
D)  manufactures carbohydrates. 
E)  All answers are correct.

Question 4

During cellular respiration,electrons are transferred to the electron carrier molecules

Accepted Answer

A)  ATP and FADH₂. 
B)  NADH and FADH₂. 
C)  carbon dioxide. 
D)  NADH₂ and glucose. 
E)  acetyl CoA. 
A)  ATP and FADH₂. 
B)  NADH and FADH₂. 
C)  carbon dioxide. 
D)  NADH₂ and glucose. 
E)  acetyl CoA.

Question 5

Alcoholic fermentation

Accepted Answer

A)  is carried out by yeasts. 
B)  produces far less ATP than aerobic respiration. 
C)  produces ethanol. 
D)  produces carbon dioxide. 
E)  All answers are correct. 
A)  is carried out by yeasts. 
B)  produces far less ATP than aerobic respiration. 
C)  produces ethanol. 
D)  produces carbon dioxide. 
E)  All answers are correct.

Question 6

In plants,chloroplasts function as the site of cellular respiration.

Accepted Answer

A) True 
 B)False

Question 7

Energy can be extracted from proteins by cellular respiration.

Accepted Answer

A) True 
 B)False

Question 8

In the electron transport chain,what occurs between the two membranes of mitochondria?

Accepted Answer

A)  Glycolysis occurs in the membranes. 
B)  Protons are pumped into the space between the membranes. 
C)  Oxygen is transported across the membranes. 
D)  The membranes prevent the mitochondria from rupturing during osmosis without two membranes. 
E)  The Krebs cycle enzymes are found on the outer mitochondrial membrane. 
A)  Glycolysis occurs in the membranes. 
B)  Protons are pumped into the space between the membranes. 
C)  Oxygen is transported across the membranes. 
D)  The membranes prevent the mitochondria from rupturing during osmosis without two membranes. 
E)  The Krebs cycle enzymes are found on the outer mitochondrial membrane.

Question 9

Muscle cells use lactic acid fermentation to

Accepted Answer

A)  regenerate NAD⁺ so that glycolysis can continue in the absence of oxygen. 
B)  produce ATP in the presence of oxygen. 
C)  produce more ATP than in respiration. 
D)  allow an animal to survive for long periods of time in the absence of oxygen. 
E)  produce less CO₂. 
A)  regenerate NAD⁺ so that glycolysis can continue in the absence of oxygen. 
B)  produce ATP in the presence of oxygen. 
C)  produce more ATP than in respiration. 
D)  allow an animal to survive for long periods of time in the absence of oxygen. 
E)  produce less CO₂.

Question 10

Four ATP molecules are made in the second step in glycolysis.However,the net production of ATP is two because

Accepted Answer

A)  two molecules of ATP are needed to "activate" glucose. 
B)  two molecules of ATP are used to move glucose into the chloroplast. 
C)  glycolysis is the final step of aerobic respiration. 
D)  ATP production cannot exceed NADH production. 
E)  glycolysis may occur without oxygen being present. 
A)  two molecules of ATP are needed to "activate" glucose. 
B)  two molecules of ATP are used to move glucose into the chloroplast. 
C)  glycolysis is the final step of aerobic respiration. 
D)  ATP production cannot exceed NADH production. 
E)  glycolysis may occur without oxygen being present.

Question 11

Philodendron flowers pass electrons through a modified electron transport chain to generate heat.What is the source of these electrons?

Accepted Answer

A)  water 
B)  oxygen 
C)  ATP 
D)  sunlight 
E)  NADH and FADH₂ 
A)  water 
B)  oxygen 
C)  ATP 
D)  sunlight 
E)  NADH and FADH₂

Exam 6: Respiration and Fermentation

The three main biochemical pathways of cellular respiration are

In eukaryotic cells,the electron transport chain occurs in the

The Krebs cycle continues the breakdown of glucose and

During cellular respiration,electrons are transferred to the electron carrier molecules

Alcoholic fermentation

In plants,chloroplasts function as the site of cellular respiration.

Energy can be extracted from proteins by cellular respiration.

In the electron transport chain,what occurs between the two membranes of mitochondria?

Muscle cells use lactic acid fermentation to

Four ATP molecules are made in the second step in glycolysis.However,the net production of ATP is two because

Philodendron flowers pass electrons through a modified electron transport chain to generate heat.What is the source of these electrons?

The Scientific Study of Life

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