Question 1

Lactate production in muscle cells is

Accepted Answer

A) temporary. 
B) due to oxygen deficiency. 
C) an NAD+ regenerator. 
D) temporary and due to oxygen deficiency. 
E) temporary, due to oxygen deficiency, and an NAD+ regenerator. 
A) temporary. 
B) due to oxygen deficiency. 
C) an NAD+ regenerator. 
D) temporary and due to oxygen deficiency. 
E) temporary, due to oxygen deficiency, and an NAD+ regenerator.

Question 2

The last intermediate produced in the Krebs cycle before the entry of the next acetyl-CoA is

Accepted Answer

A) pyruvate. 
B) acetyl-CoA. 
C) fructose bisphosphate. 
D) oxaloacetate. 
E) citrate. 
A) pyruvate. 
B) acetyl-CoA. 
C) fructose bisphosphate. 
D) oxaloacetate. 
E) citrate.

Question 3

Pyruvate is the end product of

Accepted Answer

A) glycolysis. 
B) acetyl-CoA formation. 
C) fermentation. 
D) the Krebs cycle. 
E) the citric acid cycle. 
A) glycolysis. 
B) acetyl-CoA formation. 
C) fermentation. 
D) the Krebs cycle. 
E) the citric acid cycle.

Question 4

Krebs cycle reactions and electron transfer phosphorylation are

Accepted Answer

A) in the mitochondrion and ER, respectively. 
B) in separate parts of the mitochondrion. 
C) inside and outside the mitochondrion, respectively. 
D) in the same mitochondrial compartment. 
E) cytoplasmic reactions. 
A) in the mitochondrion and ER, respectively. 
B) in separate parts of the mitochondrion. 
C) inside and outside the mitochondrion, respectively. 
D) in the same mitochondrial compartment. 
E) cytoplasmic reactions.

Question 5

All living organisms

Accepted Answer

A) generate ATP. 
B) utilize oxygen. 
C) have a well-defined nucleus. 
D) produce carbon dioxide. 
E) generate ATP and respire. 
A) generate ATP. 
B) utilize oxygen. 
C) have a well-defined nucleus. 
D) produce carbon dioxide. 
E) generate ATP and respire.

Question 6

The symptoms and signs of Friedreich's ataxia include all of the following EXCEPT

Accepted Answer

A) loss of coordination. 
B) iron buildup in mitochondria. 
C) serious heart problems. 
D) abnormally shaped mitochondria. 
E) weak muscles. 
A) loss of coordination. 
B) iron buildup in mitochondria. 
C) serious heart problems. 
D) abnormally shaped mitochondria. 
E) weak muscles.

Question 7

The highly toxic cyanide poison binds to the last molecule in the electron transfer chain, halting additional electron transfer.What is the consequence?

Accepted Answer

A) Oxygen can't pick up electrons. 
B) No more water will be formed. 
C) No more ATP will be formed. 
D) The affected individual will not survive. 
E) All of these are a consequence. 
A) Oxygen can't pick up electrons. 
B) No more water will be formed. 
C) No more ATP will be formed. 
D) The affected individual will not survive. 
E) All of these are a consequence.

Question 8

Which of the following is a phosphorylated intermediate compound in glycolysis?

Accepted Answer

A) phosphoglycerate (PG
A)  
B) phosphoenol pyruvate (PEP) 
C) phosphoglyceraldehyde (PGAL) 
D) fructose bisphosphate 
E) all of these 
A) phosphoglycerate (PG
A)  
B) phosphoenol pyruvate (PEP) 
C) phosphoglyceraldehyde (PGAL) 
D) fructose bisphosphate 
E) all of these

Question 9

Between meals

Accepted Answer

A) the pancreas secretes glucagon. 
B) liver cells convert stored glycogen to glucose. 
C) the brain continues to receive adequate glucose. 
D) fatty-acid conversions supply about half of the ATP needed by muscle and liver cells. 
E) all of these occur. 
A) the pancreas secretes glucagon. 
B) liver cells convert stored glycogen to glucose. 
C) the brain continues to receive adequate glucose. 
D) fatty-acid conversions supply about half of the ATP needed by muscle and liver cells. 
E) all of these occur.

Question 10

In the conversion of pyruvate to ethanol, which of the following is (are) produced?

Accepted Answer

A) acetaldehyde 
B) carbon dioxide 
C) NADH 
D) acetaldehyde and carbon dioxide only 
E) acetaldehyde, carbon dioxide, and NADH 
A) acetaldehyde 
B) carbon dioxide 
C) NADH 
D) acetaldehyde and carbon dioxide only 
E) acetaldehyde, carbon dioxide, and NADH

Question 11

The symptoms and signs of Luft's Syndrome include all of the following EXCEPT

Accepted Answer

A) high oxygen consumption. 
B) constant fever. 
C) flushed skin. 
D) abnormally shaped mitochondria. 
E) low number of mitochondria 
A) high oxygen consumption. 
B) constant fever. 
C) flushed skin. 
D) abnormally shaped mitochondria. 
E) low number of mitochondria

Question 12

Excess glucose in the human diet can result in accumulations of

Accepted Answer

A) pyruvate. 
B) NADH. 
C) fat. 
D) lactate. 
E) ATP. 
A) pyruvate. 
B) NADH. 
C) fat. 
D) lactate. 
E) ATP.

Question 13

Substrate-level phosphorylation transfers phosphate groups from

Accepted Answer

A) substrate. 
B) coenzyme. 
C) the electron transfer chain. 
D) ATP. 
E) the Krebs cycle. 
A) substrate. 
B) coenzyme. 
C) the electron transfer chain. 
D) ATP. 
E) the Krebs cycle.

Question 14

During the third stage of aerobic respiration, electrons and hydrogen ions released by the reactions of the first two stages are picked up by

Accepted Answer

A) photosynthetic enzymes and ATP. 
B) CO2 and H2O. 
C) iron and glucose. 
D) NAD and FAD 
E) none of these. 
A) photosynthetic enzymes and ATP. 
B) CO2 and H2O. 
C) iron and glucose. 
D) NAD and FAD 
E) none of these.

Question 15

The electron transfer chain is located

Accepted Answer

A) on the inner membrane of the mitochondria. 
B) on the inner membrane of the chloroplasts. 
C) in the fluid part of the chloroplast. 
D) throughout the cytoplasm of the cell. 
E) on the plasma membrane of eukaryotes. 
A) on the inner membrane of the mitochondria. 
B) on the inner membrane of the chloroplasts. 
C) in the fluid part of the chloroplast. 
D) throughout the cytoplasm of the cell. 
E) on the plasma membrane of eukaryotes.

Question 16

The bacteria that cause botulism cannot live in the presence of

Accepted Answer

A) carbon dioxide. 
B) oxygen. 
C) glucose. 
D) water. 
E) ATP. 
A) carbon dioxide. 
B) oxygen. 
C) glucose. 
D) water. 
E) ATP.

Question 17

Glycolysis requires the input of how many ATPs to cause the breakdown of glucose?

Accepted Answer

A) one ATP molecule 
B) two ATP 
C) three ATP 
D) one ATP molecule must be taken away from glucose 
E) four ATPs 
A) one ATP molecule 
B) two ATP 
C) three ATP 
D) one ATP molecule must be taken away from glucose 
E) four ATPs

Question 18

If you were searching for anaerobic bacteria, you would NOT look for them in

Accepted Answer

A) the guts of farm animals. 
B) swamps. 
C) mountain streams. 
D) sediments of lakes and oceans. 
E) canned goods. 
A) the guts of farm animals. 
B) swamps. 
C) mountain streams. 
D) sediments of lakes and oceans. 
E) canned goods.

Question 19

Which of the following yields carbon dioxide during the breakdown of glucose in aerobic respiration?

Accepted Answer

A) phosphoglycerate 
B) pyruvate 
C) oxaloacetate 
D) PGAL 
E) fructose bisphosphate 
A) phosphoglycerate 
B) pyruvate 
C) oxaloacetate 
D) PGAL 
E) fructose bisphosphate

Question 20

Which of the following marks the transition from glycolysis to the Krebs cycle?

Accepted Answer

A) acetyl-CoA formation 
B) conversion of PGAL to PGA 
C) regeneration of reduced NAD+ 
D) oxidative phosphorylation 
E) substrate-level phosphorylation 
A) acetyl-CoA formation 
B) conversion of PGAL to PGA 
C) regeneration of reduced NAD+ 
D) oxidative phosphorylation 
E) substrate-level phosphorylation

Exam 8: Energy-Releasing Pathways

Lactate production in muscle cells is

The last intermediate produced in the Krebs cycle before the entry of the next acetyl-CoA is

Pyruvate is the end product of

Krebs cycle reactions and electron transfer phosphorylation are

All living organisms

The symptoms and signs of Friedreich's ataxia include all of the following EXCEPT

The highly toxic cyanide poison binds to the last molecule in the electron transfer chain, halting additional electron transfer.What is the consequence?

Which of the following is a phosphorylated intermediate compound in glycolysis?

Between meals

In the conversion of pyruvate to ethanol, which of the following is (are) produced?

The symptoms and signs of Luft's Syndrome include all of the following EXCEPT

Excess glucose in the human diet can result in accumulations of

Substrate-level phosphorylation transfers phosphate groups from

During the third stage of aerobic respiration, electrons and hydrogen ions released by the reactions of the first two stages are picked up by

The electron transfer chain is located

The bacteria that cause botulism cannot live in the presence of

Glycolysis requires the input of how many ATPs to cause the breakdown of glucose?

If you were searching for anaerobic bacteria, you would NOT look for them in

Which of the following yields carbon dioxide during the breakdown of glucose in aerobic respiration?

Which of the following marks the transition from glycolysis to the Krebs cycle?

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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