Question 1

Which contains the greatest amount of potential energy?

Accepted Answer

A)  C6H12O6 (glucose) 
B)  C48H82O41 (complex carbohydrate) 
C)  CH3CH2COOH (pyruvic acid) 
D)  CO2 (carbon dioxide) 
A)  C6H12O6 (glucose) 
B)  C48H82O41 (complex carbohydrate) 
C)  CH3CH2COOH (pyruvic acid) 
D)  CO2 (carbon dioxide) B

Question 2

Chemosynthesis is

Accepted Answer

A)  a form of photosynthesis. 
B)  a way some autotrophs make organic matter. 
C)  a product of the Krebs cycle. 
D)  present only in animals. 
A)  a form of photosynthesis. 
B)  a way some autotrophs make organic matter. 
C)  a product of the Krebs cycle. 
D)  present only in animals. B

Question 3

In the electron transport system, the final hydrogen (electron) acceptor is

Accepted Answer

A)  oxygen. 
B)  ATP. 
C)  acetyl. 
D)  NAD. 
A)  oxygen. 
B)  ATP. 
C)  acetyl. 
D)  NAD. A

Question 4

Aerobic cellular respiration requires the use of

Accepted Answer

A)  N2. 
B)  O2. 
C)  H2. 
D)  H2O. 
A)  N2. 
B)  O2. 
C)  H2. 
D)  H2O.

Question 5

Organisms able to make food molecules from inorganic materials and sun energy are

Accepted Answer

A)  autotrophs. 
B)  aerobic. 
C)  anaerobic. 
D)  heterotrophs. 
A)  autotrophs. 
B)  aerobic. 
C)  anaerobic. 
D)  heterotrophs.

Question 6

Which of the following would NOT be synthesized during anaerobic cellular respiration from pyruvic acid?

Accepted Answer

A)  ethyl alcohol and CO2 
B)  lactic acid 
C)  acetyl 
D)  acetic acid 
A)  ethyl alcohol and CO2 
B)  lactic acid 
C)  acetyl 
D)  acetic acid

Question 7

Acetyl can be produced directly from

Accepted Answer

A)  CoA. 
B)  glucose. 
C)  proteins. 
D)  pyruvic acid. 
A)  CoA. 
B)  glucose. 
C)  proteins. 
D)  pyruvic acid.

Question 8

The Krebs cycle produces

Accepted Answer

A)  carbon dioxide. 
B)  phosphate. 
C)  acetyl. 
D)  CoA. 
A)  carbon dioxide. 
B)  phosphate. 
C)  acetyl. 
D)  CoA.

Question 9

A form of metabolism used by prokaryotic organisms is

Accepted Answer

A)  chemosynthesis. 
B)  photosynthesis. 
C)  anaerobic respiration. 
D)  All of these answers are correct. 
A)  chemosynthesis. 
B)  photosynthesis. 
C)  anaerobic respiration. 
D)  All of these answers are correct.

Question 10

The digestion of a protein results in

Accepted Answer

A)  sugars. 
B)  enzymes. 
C)  amino acids. 
D)  the formation of peptide bonds. 
A)  sugars. 
B)  enzymes. 
C)  amino acids. 
D)  the formation of peptide bonds.

Question 11

In the electron transport system, hydrogen ultimately combines with

Accepted Answer

A)  carbohydrates. 
B)  phosphate. 
C)  oxygen. 
D)  water. 
A)  carbohydrates. 
B)  phosphate. 
C)  oxygen. 
D)  water.

Question 12

Aerobic cellular respiration differs from anaerobic respiration in that

Accepted Answer

A)  aerobic cellular respiration only takes place in plants. 
B)  anaerobic cellular respiration requires the presence of mitochondria. 
C)  aerobic cellular respiration produces more ATP. 
D)  anaerobic cellular respiration only uses the electron transport system. 
A)  aerobic cellular respiration only takes place in plants. 
B)  anaerobic cellular respiration requires the presence of mitochondria. 
C)  aerobic cellular respiration produces more ATP. 
D)  anaerobic cellular respiration only uses the electron transport system.

Question 13

The relationship between lactic acid and pyruvic acid is that

Accepted Answer

A)  lactic acid is formed only in milk. 
B)  lactic acid is formed from pyruvic acid in fermentation. 
C)  one has phosphate and the other doesn't. 
D)  one is twice as big (6 carbons) as the other (3 carbons). 
A)  lactic acid is formed only in milk. 
B)  lactic acid is formed from pyruvic acid in fermentation. 
C)  one has phosphate and the other doesn't. 
D)  one is twice as big (6 carbons) as the other (3 carbons).

Question 14

Conversion of a six-carbon carbohydrate to two pyruvic acid molecules with accompanying reactions that release ATP and hydrogen atoms is called

Accepted Answer

A)  glycolysis. 
B)  Krebs cycle. 
C)  electron transport system. 
D)  carbon fixation. 
A)  glycolysis. 
B)  Krebs cycle. 
C)  electron transport system. 
D)  carbon fixation.

Question 15

During glycolysis, a six-carbon sugar is converted to

Accepted Answer

A)  three two-carbon sugars. 
B)  glucose. 
C)  two pyruvic acid molecules. 
D)  a disaccharide. 
A)  three two-carbon sugars. 
B)  glucose. 
C)  two pyruvic acid molecules. 
D)  a disaccharide.

Question 16

What is happening here? "W" represents any molecule and e- represents an electron.
W $\rightarrow$ W+ + e-

Accepted Answer

A)  oxidation of W 
B)  reduction of W 
C)  hydrolysis of W 
D)  None of these choices is correct. 
A)  oxidation of W 
B)  reduction of W 
C)  hydrolysis of W 
D)  None of these choices is correct.

Question 17

Aerobic cellular respiration differs from anaerobic cellular respiration in that

Accepted Answer

A)  anaerobic cellular respiration only takes place in plants. 
B)  aerobic cellular respiration takes place in mitochondria. 
C)  anaerobic cellular respiration produces more ATP. 
D)  aerobic cellular respiration only uses glycolysis. 
A)  anaerobic cellular respiration only takes place in plants. 
B)  aerobic cellular respiration takes place in mitochondria. 
C)  anaerobic cellular respiration produces more ATP. 
D)  aerobic cellular respiration only uses glycolysis.

Question 18

The Krebs cycle requires

Accepted Answer

A)  a four-carbon acid. 
B)  coenzyme A (Co
A) . 
C)  an acetyl group (2
C) . 
D)  All of these answers are true. 
A)  a four-carbon acid. 
B)  coenzyme A (Co
A) . 
C)  an acetyl group (2
C) . 
D)  All of these answers are true.

Question 19

Glucose + NAD+ + ADP + P $\rightarrow$ NADH + Pyruvic Acid + ATP. This formula represents

Accepted Answer

A)  the Krebs cycle. 
B)  photosynthesis. 
C)  glycolysis. 
D)  the light-dependent reactions. 
A)  the Krebs cycle. 
B)  photosynthesis. 
C)  glycolysis. 
D)  the light-dependent reactions.

Question 20

____ is NOT a product of the Kreb cycle.

Accepted Answer

A)  Pyruvic acid 
B)  ATP 
C)  NADH2 and FADH2 
D)  CO2 
A)  Pyruvic acid 
B)  ATP 
C)  NADH2 and FADH2 
D)  CO2

Exam 6: Biochemical Pathways: Cellular Respiration

Which contains the greatest amount of potential energy?

Chemosynthesis is

In the electron transport system, the final hydrogen (electron) acceptor is

Aerobic cellular respiration requires the use of

Organisms able to make food molecules from inorganic materials and sun energy are

Which of the following would NOT be synthesized during anaerobic cellular respiration from pyruvic acid?

Acetyl can be produced directly from

The Krebs cycle produces

A form of metabolism used by prokaryotic organisms is

The digestion of a protein results in

In the electron transport system, hydrogen ultimately combines with

Aerobic cellular respiration differs from anaerobic respiration in that

The relationship between lactic acid and pyruvic acid is that

Conversion of a six-carbon carbohydrate to two pyruvic acid molecules with accompanying reactions that release ATP and hydrogen atoms is called

During glycolysis, a six-carbon sugar is converted to

What is happening here? "W" represents any molecule and e- represents an electron. W →\rightarrow→ W+ + e-

Aerobic cellular respiration differs from anaerobic cellular respiration in that

The Krebs cycle requires

Glucose + NAD+ + ADP + P →\rightarrow→ NADH + Pyruvic Acid + ATP. This formula represents

____ is NOT a product of the Kreb cycle.

What Is Biology

The Basics of Life: Chemistry

Organic Molecules: The Molecules of Life

Cell Structure and Function

Enzymes, Coenzymes, and Energy

Biochemical Pathways: Photosynthesis

DNA and RNA: The Molecular Basis of Heredity

Cell Division: Proliferation and Reproduction

Patterns of Inheritance

Applications of Biotechnology

Diversity Within Species and Population Genetics

Evolution and Natural Selection

The Formation of Species and Evolutionary Change

Ecosystem Dynamics: The Flow of Energy and Matter

Community Interactions

Population Ecology

Evolutionary and Ecological Aspects of Behavior

The Origin of Life and the Evolution of Cells

The Classification and Evolution of Organisms

The Nature of Microorganisms

The Plant Kingdom

The Animal Kingdom

Materials Exchange in the Body

Nutrition: Food and Diet

The Bodys Control Mechanisms and Immunity

Human Reproduction, Sex, and Sexuality

Filters

What is happening here? "W" represents any molecule and e^- represents an electron. W $\rightarrow$ W⁺ + e^-

Glucose + NAD⁺ + ADP + P $\rightarrow$ NADH + Pyruvic Acid + ATP. This formula represents