Question 1

When molecules are broken apart in respiration,

Accepted Answer

A) the heat produced is used to drive biological reactions. 
B) the oxygen in the compounds that are broken apart is used as an energy source. 
C) the energy released is channeled into molecules of ATP. 
D) ATP is converted into ADP. 
E) ADP is released as a waste product. 
A) the heat produced is used to drive biological reactions. 
B) the oxygen in the compounds that are broken apart is used as an energy source. 
C) the energy released is channeled into molecules of ATP. 
D) ATP is converted into ADP. 
E) ADP is released as a waste product.

Question 2

The yield from each pyruvate in the second stage includes

Accepted Answer

A) 4 NADH. 
B) 1 FADH2. 
C) 1 ATP. 
D) 3 CO2. 
E) all of these. 
A) 4 NADH. 
B) 1 FADH2. 
C) 1 ATP. 
D) 3 CO2. 
E) all of these.

Question 3

Which statement is false?

Accepted Answer

A) High concentrations of ATP inhibit the formation of more ATP. 
B) The ATP concentration in cells actually decreases at first when cells need large supplies of energy. 
C) When ATP concentration declines, enzymatic activity that produces ATP declines. 
D) Cells constantly adjust their metabolic reactions to provide energy whenever it is needed. 
E) The activity of many different enzymes influences the supply of ATP in cells. 
A) High concentrations of ATP inhibit the formation of more ATP. 
B) The ATP concentration in cells actually decreases at first when cells need large supplies of energy. 
C) When ATP concentration declines, enzymatic activity that produces ATP declines. 
D) Cells constantly adjust their metabolic reactions to provide energy whenever it is needed. 
E) The activity of many different enzymes influences the supply of ATP in cells.

Question 4

During the Krebs cycle,

Accepted Answer

A) substrate-level phosphorylation occurs. 
B) oxaloacetate is regenerated. 
C) electrons and H+ are transferred to coenzymes NAD+ and FAD. 
D) molecules of carbon dioxide are formed. 
E) all of these occur. 
A) substrate-level phosphorylation occurs. 
B) oxaloacetate is regenerated. 
C) electrons and H+ are transferred to coenzymes NAD+ and FAD. 
D) molecules of carbon dioxide are formed. 
E) all of these occur.

Question 5

Which of the following has the greatest total energy?

Accepted Answer

A) cAMP 
B) ADP 
C) ATP 
D) glucose 
E) NADPH 
A) cAMP 
B) ADP 
C) ATP 
D) glucose 
E) NADPH

Question 6

Cellular respiration

Accepted Answer

A) is the reverse of the process of photosynthesis. 
B) involves the physical exchange of gases. 
C) is a mechanism of tapping the energy found in the bonds between atoms in organic compounds. 
D) can occur only if there is a supply of glucose available because no other compound can be the energy source for cellular respiration. 
E) occurs only in animal cells. 
A) is the reverse of the process of photosynthesis. 
B) involves the physical exchange of gases. 
C) is a mechanism of tapping the energy found in the bonds between atoms in organic compounds. 
D) can occur only if there is a supply of glucose available because no other compound can be the energy source for cellular respiration. 
E) occurs only in animal cells.

Exam 8: Energy-Releasing Pathways

When molecules are broken apart in respiration,

The yield from each pyruvate in the second stage includes

Which statement is false?

During the Krebs cycle,

Which of the following has the greatest total energy?

Cellular respiration

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

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