Question 1

AB → A + B is to decomposition as A + B → AB is to

Accepted Answer

A) exchange. 
B) synthesis. 
C) combustion. 
D) replacement. 
E) metabolism. 
A) exchange. 
B) synthesis. 
C) combustion. 
D) replacement. 
E) metabolism.

Question 2

An example of an inorganic substance is

Accepted Answer

A) fructose. 
B) water. 
C) glycerol. 
D) carbon dioxide. 
E) water and carbon dioxide. 
A) fructose. 
B) water. 
C) glycerol. 
D) carbon dioxide. 
E) water and carbon dioxide.

Question 3

The weakest bond between two atoms is the ________ bond.

Accepted Answer

A) ionic 
B) covalent 
C) polar 
D) nonpolar 
E) hydrogen 
A) ionic 
B) covalent 
C) polar 
D) nonpolar 
E) hydrogen

Question 4

Elements that have atoms with full outer shells of electrons

Accepted Answer

A) will form many compounds. 
B) will normally form anions. 
C) will normally form cations. 
D) frequently form hydrogen bonds. 
E) are inert gases. 
A) will form many compounds. 
B) will normally form anions. 
C) will normally form cations. 
D) frequently form hydrogen bonds. 
E) are inert gases.

Question 5

By weight,which element is the second most abundant in the human body?

Accepted Answer

A) oxygen 
B) carbon 
C) hydrogen 
D) nitrogen 
E) calcium 
A) oxygen 
B) carbon 
C) hydrogen 
D) nitrogen 
E) calcium

Question 6

The chemical behavior of an atom is determined by the

Accepted Answer

A) number of protons. 
B) number of neutrons. 
C) outermost electron shell. 
D) size of the atom. 
E) mass of the nucleus. 
A) number of protons. 
B) number of neutrons. 
C) outermost electron shell. 
D) size of the atom. 
E) mass of the nucleus.

Question 7

Compounds that can be synthesized or broken down by chemical reactions inside the body are called

Accepted Answer

A) inorganic compounds. 
B) organic compounds. 
C) nutrients. 
D) metabolites. 
E) enzymes. 
A) inorganic compounds. 
B) organic compounds. 
C) nutrients. 
D) metabolites. 
E) enzymes.

Question 8

The most important metabolic fuel molecule in the body is

Accepted Answer

A) sucrose. 
B) caffeine. 
C) protein. 
D) vitamins. 
E) glucose. 
A) sucrose. 
B) caffeine. 
C) protein. 
D) vitamins. 
E) glucose.

Question 9

Most of the fat found in the human body is in the form of

Accepted Answer

A) cholesterol. 
B) phospholipids. 
C) triglycerides. 
D) prostaglandins. 
E) monoglycerides. 
A) cholesterol. 
B) phospholipids. 
C) triglycerides. 
D) prostaglandins. 
E) monoglycerides.

Question 10

Which of the following substances would be most acidic?

Accepted Answer

A) lemon juice,pH = 2 
B) urine,pH = 6 
C) tomato juice,pH = 4 
D) white wine,pH = 3 
E) stomach secretions,pH = 1 
A) lemon juice,pH = 2 
B) urine,pH = 6 
C) tomato juice,pH = 4 
D) white wine,pH = 3 
E) stomach secretions,pH = 1

Question 11

One mole of any element has the same

Accepted Answer

A) mass. 
B) weight. 
C) number of atoms. 
D) number of electrons. 
E) All of the answers are correct. 
A) mass. 
B) weight. 
C) number of atoms. 
D) number of electrons. 
E) All of the answers are correct.

Question 12

Which element commonly has only a proton as its nucleus?

Accepted Answer

A) helium 
B) neon 
C) argon 
D) hydrogen 
E) carbon 
A) helium 
B) neon 
C) argon 
D) hydrogen 
E) carbon

Question 13

Molecules with two fatty acid chains and a phosphate group that form biological membranes are called

Accepted Answer

A) diglycerides. 
B) disaccharides. 
C) dipeptides. 
D) prostaglandins. 
E) phospholipids. 
A) diglycerides. 
B) disaccharides. 
C) dipeptides. 
D) prostaglandins. 
E) phospholipids.

Question 14

If a substance has a pH that is greater than 7,it is

Accepted Answer

A) neutral. 
B) acidic. 
C) alkaline. 
D) a buffer. 
E) a salt. 
A) neutral. 
B) acidic. 
C) alkaline. 
D) a buffer. 
E) a salt.

Question 15

In a molecule of nitrogen,three pairs of electrons are shared by two nitrogen atoms.The type of bond that is formed is an example of a ________ bond.

Accepted Answer

A) single trivalent 
B) double divalent 
C) triple covalent 
D) polar covalent 
E) hydrogen 
A) single trivalent 
B) double divalent 
C) triple covalent 
D) polar covalent 
E) hydrogen

Question 16

The molecule H₂ is known as

Accepted Answer

A) hydrohydrogen. 
B) hydrogen. 
C) hydroxide. 
D) helium. 
E) semi-water. 
A) hydrohydrogen. 
B) hydrogen. 
C) hydroxide. 
D) helium. 
E) semi-water.

Question 17

A side chain on an amino acid is sometimes called

Accepted Answer

A) fibrous or globular. 
B) a polypeptide chain. 
C) an R group. 
D) an isozyme. 
E) nucleic acid. 
A) fibrous or globular. 
B) a polypeptide chain. 
C) an R group. 
D) an isozyme. 
E) nucleic acid.

Question 18

Muscle proteins are destroyed after 17 days and then replaced.This is an example of

Accepted Answer

A) metabolic turnover. 
B) surveillance. 
C) surface tension. 
D) disease. 
E) specificity. 
A) metabolic turnover. 
B) surveillance. 
C) surface tension. 
D) disease. 
E) specificity.

Question 19

The term ________ refers to certain amino acids,which can have both a positive charge and a negative charge.

Accepted Answer

A) anion 
B) cation 
C) twinion 
D) zwitterion 
E) double ion 
A) anion 
B) cation 
C) twinion 
D) zwitterion 
E) double ion

Question 20

The smallest stable units of matter are

Accepted Answer

A) atoms. 
B) molecules. 
C) protons. 
D) neutrons. 
E) electrons. 
A) atoms. 
B) molecules. 
C) protons. 
D) neutrons. 
E) electrons.

Exam 2: The Chemical Level of Organization

AB → A + B is to decomposition as A + B → AB is to

An example of an inorganic substance is

The weakest bond between two atoms is the ________ bond.

Elements that have atoms with full outer shells of electrons

By weight,which element is the second most abundant in the human body?

The chemical behavior of an atom is determined by the

Compounds that can be synthesized or broken down by chemical reactions inside the body are called

The most important metabolic fuel molecule in the body is

Most of the fat found in the human body is in the form of

Which of the following substances would be most acidic?

One mole of any element has the same

Which element commonly has only a proton as its nucleus?

Molecules with two fatty acid chains and a phosphate group that form biological membranes are called

If a substance has a pH that is greater than 7,it is

In a molecule of nitrogen,three pairs of electrons are shared by two nitrogen atoms.The type of bond that is formed is an example of a ________ bond.

The molecule H₂ is known as

A side chain on an amino acid is sometimes called

Muscle proteins are destroyed after 17 days and then replaced.This is an example of

The term ________ refers to certain amino acids,which can have both a positive charge and a negative charge.

The smallest stable units of matter are

An Introduction to Anatomy and Physiology

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System

Neural Tissue

The Spinal Cord, spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Sensory Pathways and the Somatic Nervous System

The Autonomic Nervous System and Higher-Order Functions

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

Fluid, electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

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