Question 1

Which of the following is a superoxide radical?

Accepted Answer

A) an oxygen molecule with an extra, unpaired electron 
B) an oxygen molecule with two paired electrons 
C) hydrogen peroxide 
D) All of these choices are correct. 
A) an oxygen molecule with an extra, unpaired electron 
B) an oxygen molecule with two paired electrons 
C) hydrogen peroxide 
D) All of these choices are correct.

Question 2

Acetyl CoA

Accepted Answer

A) can enter the Krebs cycle. 
B) can reversibly form ketone bodies. 
C) can directly form pyruvic acid. 
D) Both can enter the Krebs cycle and can reversibly form ketone bodies. 
A) can enter the Krebs cycle. 
B) can reversibly form ketone bodies. 
C) can directly form pyruvic acid. 
D) Both can enter the Krebs cycle and can reversibly form ketone bodies.

Question 3

What structures allow H+ to diffuse back across the inner mitochondrial membrane to the matrix?

Accepted Answer

A) cytochromes 
B) coenzyme Q 
C) respiratory assemblies 
D) NADH 
A) cytochromes 
B) coenzyme Q 
C) respiratory assemblies 
D) NADH

Which of the following is a superoxide radical?

Acetyl CoA

What structures allow H⁺ to diffuse back across the inner mitochondrial membrane to the matrix?

The Study of Body Function

Chemical Composition of the Body

Cell Structure and Genetic Control

Enzymes and Energy

Interactions Between Cells and The Extracellular Environment

The Nervous System

The Central Nervous System

The Autonomic Nervous System

Sensory Physiology

Endocrine Glands

Muscle

Blood, Heart, and Circulation

Cardiac Output, Blood Flow, and Bloodpressure

The Immune System

Respiratory Physiology

Physiology of the Kidneys

The Digestive System

Regulation of Metabolism

Reproduction

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Exam 5: Cell Respiration and Metabolism

Which of the following is a superoxide radical?

Acetyl CoA

What structures allow H+ to diffuse back across the inner mitochondrial membrane to the matrix?

The Study of Body Function

Chemical Composition of the Body

Cell Structure and Genetic Control

Enzymes and Energy

Interactions Between Cells and The Extracellular Environment

The Nervous System

The Central Nervous System

The Autonomic Nervous System

Sensory Physiology

Endocrine Glands

Muscle

Blood, Heart, and Circulation

Cardiac Output, Blood Flow, and Bloodpressure

The Immune System

Respiratory Physiology

Physiology of the Kidneys

The Digestive System

Regulation of Metabolism

Reproduction

Filters

What structures allow H⁺ to diffuse back across the inner mitochondrial membrane to the matrix?