Question 1

Glycolysis

Accepted Answer

A) Yields two molecules of ATP for each molecule of glucose processed 
B) May yield two molecules of lactate for each molecule of glucose processed 
C) Takes place in the mitochondria of cells 
D) Includes both yields two molecules of ATP for each molecule of glucose processed and may yield two molecules of lactate for each molecule of glucose processed 
E) All of the choices are correct 
A) Yields two molecules of ATP for each molecule of glucose processed 
B) May yield two molecules of lactate for each molecule of glucose processed 
C) Takes place in the mitochondria of cells 
D) Includes both yields two molecules of ATP for each molecule of glucose processed and may yield two molecules of lactate for each molecule of glucose processed 
E) All of the choices are correct

Question 2

Enzymes

Accepted Answer

A) Are catalysts in chemical reactions 
B) Can be carbohydrate molecules 
C) Are broken down during chemical reactions they catalyze 
D) Have names generally ending in the suffix "-ose." 
E) Are described by all of the choices 
A) Are catalysts in chemical reactions 
B) Can be carbohydrate molecules 
C) Are broken down during chemical reactions they catalyze 
D) Have names generally ending in the suffix "-ose." 
E) Are described by all of the choices

Question 3

Fatty acid catabolism

Accepted Answer

A) Takes place in the cytosol of cells 
B) Is initiated by the binding of a molecule of coenzyme A 
C) Proceeds by a process called beta-oxidation 
D) Generates one molecule of acetyl coenzyme A for every carbon atom in the fatty acid 
E) Both is initiated by the binding of a molecule of coenzyme A and proceeds by a process called beta-oxidation are correct 
A) Takes place in the cytosol of cells 
B) Is initiated by the binding of a molecule of coenzyme A 
C) Proceeds by a process called beta-oxidation 
D) Generates one molecule of acetyl coenzyme A for every carbon atom in the fatty acid 
E) Both is initiated by the binding of a molecule of coenzyme A and proceeds by a process called beta-oxidation are correct

Question 4

Which of the following is true concerning the rate-limiting step in a metabolic pathway?

Accepted Answer

A) It is likely to be the slowest reaction in the pathway 
B) It is likely to be the fastest reaction in the pathway 
C) It may be subject to end-product inhibition 
D) Both it is likely to be the slowest reaction in the pathway and it may be subject to end-product inhibition are correct 
E) Both it is likely to be the fastest reaction in the pathway and it may be subject to end-product inhibition are correct 
A) It is likely to be the slowest reaction in the pathway 
B) It is likely to be the fastest reaction in the pathway 
C) It may be subject to end-product inhibition 
D) Both it is likely to be the slowest reaction in the pathway and it may be subject to end-product inhibition are correct 
E) Both it is likely to be the fastest reaction in the pathway and it may be subject to end-product inhibition are correct

Question 5

Is amphipathic descriptive of

Accepted Answer

A) Integral membrane proteins 
B) Peripheral membrane proteins 
C) Both kinds of membrane proteins 
A) Integral membrane proteins 
B) Peripheral membrane proteins 
C) Both kinds of membrane proteins

Question 6

In the fluid-mosaic model of membrane structure,

Accepted Answer

A) The proteins exist in a bilayer formation 
B) The phospholipids are tightly bound in place 
C) The term "mosaic" refers to the cholesterol component 
D) Integral proteins are amphipathic 
E) None of the choices are true 
A) The proteins exist in a bilayer formation 
B) The phospholipids are tightly bound in place 
C) The term "mosaic" refers to the cholesterol component 
D) Integral proteins are amphipathic 
E) None of the choices are true

Question 7

Phospholipids form effective barriers between the aqueous cytosol of cells and the aqueous extracellular fluid because they are

Accepted Answer

A) Polar 
B) Nonpolar 
C) Lipids 
D) Rigid 
E) Amphipathic 
A) Polar 
B) Nonpolar 
C) Lipids 
D) Rigid 
E) Amphipathic

Question 8

With respect to the genetic language what do the words mean or stand for? _______

Accepted Answer

61 code fo

Question 9

Glucose is not considered an essential nutrient because it is not essential for good health.

Accepted Answer

A) True 
 B)False

Question 10

A chemical catalyst increases the rate of a reaction by

Accepted Answer

A) Acting as one of the reactant molecules 
B) Decreasing the energy of activation 
C) Increasing the energy content of the product molecules 
D) Increasing the temperature of a solution 
E) All of the choices are correct 
A) Acting as one of the reactant molecules 
B) Decreasing the energy of activation 
C) Increasing the energy content of the product molecules 
D) Increasing the temperature of a solution 
E) All of the choices are correct

Question 11

How does the synthesis of proteins that are destined to be secreted differ from that of proteins with functions inside the cell?

Accepted Answer

A) Proteins destined to be secreted have a signal sequence 
B) Proteins destined to be secreted are synthesized on free ribosomes 
C) Proteins destined to be secreted are packaged into secretory vesicles in the granular endoplasmic reticulum 
D) Both proteins destined to be secreted have a signal sequence and proteins destined to be secreted are synthesized on free ribosomes are correct 
E) Both proteins destined to be secreted have a signal sequence and proteins destined to be secreted are packaged into secretory vesicles in the granular endoplasmic reticulum are correct 
A) Proteins destined to be secreted have a signal sequence 
B) Proteins destined to be secreted are synthesized on free ribosomes 
C) Proteins destined to be secreted are packaged into secretory vesicles in the granular endoplasmic reticulum 
D) Both proteins destined to be secreted have a signal sequence and proteins destined to be secreted are synthesized on free ribosomes are correct 
E) Both proteins destined to be secreted have a signal sequence and proteins destined to be secreted are packaged into secretory vesicles in the granular endoplasmic reticulum are correct

Question 12

The reactions of the Krebs cycle

Accepted Answer

A) Take place in the cytosol of human cells 
B) Generate ATP directly by substrate phosphorylation 
C) Are important for the metabolism of carbohydrates but not other molecules 
D) Both take place in the cytosol of human cells and generate ATP directly by substrate phosphorylation are correct 
E) All of the choices are correct 
A) Take place in the cytosol of human cells 
B) Generate ATP directly by substrate phosphorylation 
C) Are important for the metabolism of carbohydrates but not other molecules 
D) Both take place in the cytosol of human cells and generate ATP directly by substrate phosphorylation are correct 
E) All of the choices are correct

Question 13

Human beings can synthesize all twenty amino acids the body must have.

Accepted Answer

A) True 
 B)False

Question 14

A catalyst for a chemical reaction

Accepted Answer

A) Lowers the activation energy of the reaction 
B) Is modified by the reaction 
C) Changes the energy content of the reactants 
D) Both lowers the activation energy of the reaction and is modified by the reaction are correct 
E) Both lowers the activation energy of the reaction and changes the energy content of the reactants are correct 
A) Lowers the activation energy of the reaction 
B) Is modified by the reaction 
C) Changes the energy content of the reactants 
D) Both lowers the activation energy of the reaction and is modified by the reaction are correct 
E) Both lowers the activation energy of the reaction and changes the energy content of the reactants are correct

Question 15

Although amino acids can be metabolized to form glucose,glucose cannot be metabolized to form amino acids.

Accepted Answer

A) True 
 B)False

Question 16

A codon is

Accepted Answer

A) A triplet of deoxyribonucleotides 
B) A triplet of ribonucleotides 
C) A sequence of ribonucleotides on tRNA 
D) A triplet of ribonucleotides and a sequence of ribonucleotides on tRNA 
E) None of the choices are correct 
A) A triplet of deoxyribonucleotides 
B) A triplet of ribonucleotides 
C) A sequence of ribonucleotides on tRNA 
D) A triplet of ribonucleotides and a sequence of ribonucleotides on tRNA 
E) None of the choices are correct

Question 17

The organelles that digest engulfed bacteria and cell debris are the

Accepted Answer

A) Peroxisomes 
B) Endosomes 
C) Lysosomes 
D) Ribosomes 
E) Mitochondria 
A) Peroxisomes 
B) Endosomes 
C) Lysosomes 
D) Ribosomes 
E) Mitochondria

Question 18

Removal of the amino group from an amino acid is necessary before the amino acid can be metabolized for energy.

Accepted Answer

A) True 
 B)False

Question 19

When glucose is catabolized in the absence of oxygen,

Accepted Answer

A) Pyruvate formed in glycolysis will generally be converted to lactate 
B) Pyruvate formed in glycolysis will generally be converted to acetyl coenzyme A, which will enter the Krebs cycle 
C) The number of ATP molecules formed per molecule of glucose will be less than the number formed in the presence of oxygen 
D) Both pyruvate formed in glycolysis will generally be converted to lactate and the number of ATP molecules formed per molecule of glucose will be less than the number formed in the presence of oxygen will occur 
E) Both pyruvate formed in glycolysis will generally be converted to acetyl coenzyme A, which will enter the Krebs cycle and the number of ATP molecules formed per molecule of glucose will be less than the number formed in the presence of oxygen will occur 
A) Pyruvate formed in glycolysis will generally be converted to lactate 
B) Pyruvate formed in glycolysis will generally be converted to acetyl coenzyme A, which will enter the Krebs cycle 
C) The number of ATP molecules formed per molecule of glucose will be less than the number formed in the presence of oxygen 
D) Both pyruvate formed in glycolysis will generally be converted to lactate and the number of ATP molecules formed per molecule of glucose will be less than the number formed in the presence of oxygen will occur 
E) Both pyruvate formed in glycolysis will generally be converted to acetyl coenzyme A, which will enter the Krebs cycle and the number of ATP molecules formed per molecule of glucose will be less than the number formed in the presence of oxygen will occur

Question 20

Acts on many kinds of protein describes

Accepted Answer

A) Protein kinases 
B) Phosphoprotein phosphatases 
C) Both protein kinases and phosphoprotein phosphatases 
D) Neither protein kinases nor phosphoprotein phosphatases 
A) Protein kinases 
B) Phosphoprotein phosphatases 
C) Both protein kinases and phosphoprotein phosphatases 
D) Neither protein kinases nor phosphoprotein phosphatases

Glycolysis

Enzymes

Fatty acid catabolism

Which of the following is true concerning the rate-limiting step in a metabolic pathway?

Is amphipathic descriptive of

In the fluid-mosaic model of membrane structure,

Phospholipids form effective barriers between the aqueous cytosol of cells and the aqueous extracellular fluid because they are

With respect to the genetic language what do the words mean or stand for? _______

Glucose is not considered an essential nutrient because it is not essential for good health.

A chemical catalyst increases the rate of a reaction by

How does the synthesis of proteins that are destined to be secreted differ from that of proteins with functions inside the cell?

The reactions of the Krebs cycle

Human beings can synthesize all twenty amino acids the body must have.

A catalyst for a chemical reaction

Although amino acids can be metabolized to form glucose,glucose cannot be metabolized to form amino acids.

A codon is

The organelles that digest engulfed bacteria and cell debris are the

Removal of the amino group from an amino acid is necessary before the amino acid can be metabolized for energy.

When glucose is catabolized in the absence of oxygen,

Acts on many kinds of protein describes

Homeostasis: a Framework for Human Physiology

Chemical Composition of the Body

Movement of Molecules Across Cell Membranes

Control of Cells by Chemical Messengers

Neuronal Signaling and the Structure of the Nervous System

Sensory Physiology

Consciousness, the Brain, and Behavior

Muscle

Control of Body Movement

The Endocrine System

Cardiovascular Physiology

Respiratory Physiology

The Kidneys and Regulation of Water and Inorganic Ions

The Digestion and Absorption of Food

Regulation of Organic Metabolism and Energy Balance

Reproduction

The Immune System

Medical Physiology: Integration Using Clinical Cases

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Exam 3: Cellular Structure, Proteins, and Metabolism

Glycolysis

Enzymes

Fatty acid catabolism

Which of the following is true concerning the rate-limiting step in a metabolic pathway?

Is amphipathic descriptive of

In the fluid-mosaic model of membrane structure,

Phospholipids form effective barriers between the aqueous cytosol of cells and the aqueous extracellular fluid because they are

With respect to the genetic language what do the words mean or stand for? _______

Glucose is not considered an essential nutrient because it is not essential for good health.

A chemical catalyst increases the rate of a reaction by

How does the synthesis of proteins that are destined to be secreted differ from that of proteins with functions inside the cell?

The reactions of the Krebs cycle

Human beings can synthesize all twenty amino acids the body must have.

A catalyst for a chemical reaction

Although amino acids can be metabolized to form glucose,glucose cannot be metabolized to form amino acids.

A codon is

The organelles that digest engulfed bacteria and cell debris are the

Removal of the amino group from an amino acid is necessary before the amino acid can be metabolized for energy.

When glucose is catabolized in the absence of oxygen,

Acts on many kinds of protein describes

Homeostasis: a Framework for Human Physiology

Chemical Composition of the Body

Movement of Molecules Across Cell Membranes

Control of Cells by Chemical Messengers

Neuronal Signaling and the Structure of the Nervous System

Sensory Physiology

Consciousness, the Brain, and Behavior

Muscle

Control of Body Movement

The Endocrine System

Cardiovascular Physiology

Respiratory Physiology

The Kidneys and Regulation of Water and Inorganic Ions

The Digestion and Absorption of Food

Regulation of Organic Metabolism and Energy Balance

Reproduction

The Immune System

Medical Physiology: Integration Using Clinical Cases

Filters