Question 1

Which of the following is a carbohydrate?

Accepted Answer

A) animal fat 
B) triglyceride 
C) sucrose 
D) cholesterol 
E) hemoglobin 
A) animal fat 
B) triglyceride 
C) sucrose 
D) cholesterol 
E) hemoglobin

Question 2

The pH value

Accepted Answer

A) is determined by the concentration of hydrogen ions. 
B) decreases with alkalinity. 
C) is measured on a scale from 0 to 10. 
D) reflects the sodium content of body fluids. 
E) increases with acidity. 
A) is determined by the concentration of hydrogen ions. 
B) decreases with alkalinity. 
C) is measured on a scale from 0 to 10. 
D) reflects the sodium content of body fluids. 
E) increases with acidity.

Question 3

Heat energy is

Accepted Answer

A) energy that flows between objects with different temperatures. 
B) movement of ions or electrons. 
C) stored energy that could do work but is not doing so. 
D) energy that moves in waves. 
E) the form of energy that actually does work. 
A) energy that flows between objects with different temperatures. 
B) movement of ions or electrons. 
C) stored energy that could do work but is not doing so. 
D) energy that moves in waves. 
E) the form of energy that actually does work.

Question 4

The conversion between different states of energy (e.g.potential energy to kinetic energy):

Accepted Answer

A) is not 100% efficent 
B) is 100% efficent 
C) typically generates heat 
D) is not possible,energy can not change its state. 
E)  is not 100% efficient and typically generates heat 
A) is not 100% efficent 
B) is 100% efficent 
C) typically generates heat 
D) is not possible,energy can not change its state. 
E)  is not 100% efficient and typically generates heat

Question 5

Why are cyanide compounds lethal to humans?

Accepted Answer

A) They interfere with protein synthesis. 
B) They interfere with nerve impulses. 
C) They interfere with the production of ATP. 
D) They interfere with muscle contraction. 
E) All of these occur with cyanide poisoning. 
A) They interfere with protein synthesis. 
B) They interfere with nerve impulses. 
C) They interfere with the production of ATP. 
D) They interfere with muscle contraction. 
E) All of these occur with cyanide poisoning.

Question 6

Which of the following organic groups does DNA belong to?

Accepted Answer

A) protein 
B) lipid 
C) nucleic acid 
D) carbohydrate 
E) vitamin 
A) protein 
B) lipid 
C) nucleic acid 
D) carbohydrate 
E) vitamin

Question 7

Which of the following lists includes only monosaccharides that are isomers of one another?

Accepted Answer

A) starch,glycogen,cellulose 
B) glucose,fructose,galactose 
C) ribose,glycogen,glucose 
D) glycogen,glucose,sucrose 
E) deoxyribose,glycogen,starch 
A) starch,glycogen,cellulose 
B) glucose,fructose,galactose 
C) ribose,glycogen,glucose 
D) glycogen,glucose,sucrose 
E) deoxyribose,glycogen,starch

Question 8

If the ratio of products and reactants are stable,the system is in _______.

Accepted Answer

A)  activation 
B)  steady state 
C)  equilibrium 
A)  activation 
B)  steady state 
C)  equilibrium

Question 9

If the products of a chemical reaction contain less potential energy than the reactants,

Accepted Answer

A) energy has been stored in the molecular bonds of the product. 
B) energy has been released by the breaking of molecular bonds. 
C) the reaction will be reversible without additional energy input. 
D) a synthesis reaction is likely to have occurred. 
E) All of these choices are correct. 
A) energy has been stored in the molecular bonds of the product. 
B) energy has been released by the breaking of molecular bonds. 
C) the reaction will be reversible without additional energy input. 
D) a synthesis reaction is likely to have occurred. 
E) All of these choices are correct.

Question 10

Consider the following five terms.Which term does not belong with the other four terms?

Accepted Answer

A) glucose 
B) lactose 
C) disaccharide 
D) sucrose 
E) maltose 
A) glucose 
B) lactose 
C) disaccharide 
D) sucrose 
E) maltose

Question 11

A neutral atom will become a cation if it

Accepted Answer

A) gains neutrons. 
B) gains electrons. 
C) loses protons. 
D) gains protons. 
E) loses electrons. 
A) gains neutrons. 
B) gains electrons. 
C) loses protons. 
D) gains protons. 
E) loses electrons.

Question 12

Kinetic energy is

Accepted Answer

A) movement of ions or electrons. 
B) energy that moves in waves. 
C) energy that flows between objects with different temperatures. 
D) the form of energy that actually does work. 
E) stored energy that could do work but is not doing so. 
A) movement of ions or electrons. 
B) energy that moves in waves. 
C) energy that flows between objects with different temperatures. 
D) the form of energy that actually does work. 
E) stored energy that could do work but is not doing so.

Question 13

Substances dissolved in the liquid portion of a solution are called

Accepted Answer

A) solvents. 
B) insoluble. 
C) catalysts. 
D) osmoles. 
E) solutes. 
A) solvents. 
B) insoluble. 
C) catalysts. 
D) osmoles. 
E) solutes.

Question 14

The building blocks of proteins are

Accepted Answer

A) eicosanoids. 
B) amino acids. 
C) triglycerides. 
D) phospholipids. 
E) monosaccharides. 
A) eicosanoids. 
B) amino acids. 
C) triglycerides. 
D) phospholipids. 
E) monosaccharides.

Question 15

Which of the following is not a use of X-ray imaging?

Accepted Answer

A)  breast cancer screening in mammography 
B)  upper digestive tract abnormalities following barium ingestion 
C)  brain tumor progression 
D)  vertebrae fractures 
A)  breast cancer screening in mammography 
B)  upper digestive tract abnormalities following barium ingestion 
C)  brain tumor progression 
D)  vertebrae fractures

Question 16

Ribose is the

Accepted Answer

A) storage carbohydrate in animals. 
B) storage carbohydrate in plants. 
C) major nutrient for most body cells. 
D) nondigestible plant polysaccharide. 
E) sugar found in RNA and ATP. 
A) storage carbohydrate in animals. 
B) storage carbohydrate in plants. 
C) major nutrient for most body cells. 
D) nondigestible plant polysaccharide. 
E) sugar found in RNA and ATP.

Question 17

Starch is the

Accepted Answer

A) storage carbohydrate in animals. 
B) sugar found in RNA. 
C) major nutrient for most body cells. 
D) nondigestible plant polysaccharide. 
E) storage carbohydrate in plants. 
A) storage carbohydrate in animals. 
B) sugar found in RNA. 
C) major nutrient for most body cells. 
D) nondigestible plant polysaccharide. 
E) storage carbohydrate in plants.

Question 18

Which function of proteins is NOT correctly matched with the example?

Accepted Answer

A) structure - collagen and keratin 
B) regulation - enzymes and hormones 
C) transport - hemoglobin 
D) contraction - actin and myosin in muscles 
E) protection - packing around organs and glands 
A) structure - collagen and keratin 
B) regulation - enzymes and hormones 
C) transport - hemoglobin 
D) contraction - actin and myosin in muscles 
E) protection - packing around organs and glands

Question 19

Which of the following lists the components of a nucleotide?

Accepted Answer

A) phosphate-sucrose-amino acid 
B) phosphate-lipid-organic base 
C) monosaccharide-organic base-sucrose 
D) monosaccharide-amino acid-phosphate 
E) phosphate-monosaccharide-organic base 
A) phosphate-sucrose-amino acid 
B) phosphate-lipid-organic base 
C) monosaccharide-organic base-sucrose 
D) monosaccharide-amino acid-phosphate 
E) phosphate-monosaccharide-organic base

Question 20

An enzyme

Accepted Answer

A) has a two-dimensional shape. 
B) is a protein catalyst. 
C) increases the activation energy needed in a chemical reaction. 
D) cannot be denatured. 
E) is permanently changed in a chemical reaction. 
A) has a two-dimensional shape. 
B) is a protein catalyst. 
C) increases the activation energy needed in a chemical reaction. 
D) cannot be denatured. 
E) is permanently changed in a chemical reaction.

Exam 2: The Chemical Basis of Life

Which of the following is a carbohydrate?

The pH value

Heat energy is

The conversion between different states of energy (e.g.potential energy to kinetic energy):

Why are cyanide compounds lethal to humans?

Which of the following organic groups does DNA belong to?

Which of the following lists includes only monosaccharides that are isomers of one another?

If the ratio of products and reactants are stable,the system is in _______.

If the products of a chemical reaction contain less potential energy than the reactants,

Consider the following five terms.Which term does not belong with the other four terms?

A neutral atom will become a cation if it

Kinetic energy is

Substances dissolved in the liquid portion of a solution are called

The building blocks of proteins are

Which of the following is not a use of X-ray imaging?

Ribose is the

Starch is the

Which function of proteins is NOT correctly matched with the example?

Which of the following lists the components of a nucleotide?

An enzyme

The Human Organism

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition,metabolism,and Temperature Regulation

Urinary System

Water,electrolyte,and Acid-Based Balance

Reproductive System

Development,growth,aging,and Genetics

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