Question 1

The type of reaction in which substances are combined to form more complex substances is called a(n) _____ reaction.

Accepted Answer

A) reversible 
B) exchange 
C) synthesis 
D) decomposition 
A) reversible 
B) exchange 
C) synthesis 
D) decomposition

Question 2

When your body is building larger and more complex chemical molecules from smaller subunits, what is occurring?

Accepted Answer

A) Anabolic reactions that expend energy 
B) Anabolic reactions that require energy 
C) Catabolic reactions that expend energy 
D) Catabolic reactions that require energy 
A) Anabolic reactions that expend energy 
B) Anabolic reactions that require energy 
C) Catabolic reactions that expend energy 
D) Catabolic reactions that require energy

Question 3

Consider an atom that has an atomic mass of 18. For it to be electrically neutral, it must have 18 electrons.

Accepted Answer

A) True 
 B)False

Question 4

One function of carbon dioxide is to help maintain proper pH balance in the body.

Accepted Answer

A) True 
 B)False

Question 5

An example of a catabolic process is:

Accepted Answer

A) hydrolysis. 
B) dehydration synthesis. 
C) formation of a peptide bond. 
D) both B and C. 
A) hydrolysis. 
B) dehydration synthesis. 
C) formation of a peptide bond. 
D) both B and C.

Question 6

Chemical bonds formed by the sharing of electrons are called:

Accepted Answer

A) ionic. 
B) covalent. 
C) hydrogen. 
D) isotopic. 
A) ionic. 
B) covalent. 
C) hydrogen. 
D) isotopic.

Question 7

According to the general formula, in synthesis reactions, the number of reactants is usually greater than the number of products.

Accepted Answer

A) True 
 B)False

Question 8

Atomic mass is determined by the number of:

Accepted Answer

A) protons and electrons. 
B) neutrons and electrons. 
C) neutrons, protons, and electrons. 
D) protons and neutrons. 
A) protons and electrons. 
B) neutrons and electrons. 
C) neutrons, protons, and electrons. 
D) protons and neutrons.

Question 9

The number of protons in the nucleus of an atom determines its atomic mass.

Accepted Answer

A) True 
 B)False

Question 10

The pH scale indicates the degree of acidity or alkalinity of a solution.

Accepted Answer

A) True 
 B)False

Question 11

In a formula for a chemical reaction, the substances on the right of the arrow are referred to as products.

Accepted Answer

A) True 
 B)False

Question 12

The hydrogen isotope tritium consists of:

Accepted Answer

A) one proton. 
B) one proton and one neutron. 
C) two protons and one neutron. 
D) one proton and two neutrons. 
A) one proton. 
B) one proton and one neutron. 
C) two protons and one neutron. 
D) one proton and two neutrons.

Question 13

pH is the negative logarithm of the hydrogen ion concentration.

Accepted Answer

A) True 
 B)False

Question 14

A solution with a pH of 6 has 100 times more hydrogen ions than a solution with a pH of 4.

Accepted Answer

A) True 
 B)False

Question 15

If an atom with a total of nine electrons were to ionically bond with an atom with a total of three electrons, what would occur?

Accepted Answer

A) The atom with nine electrons would share one of its electrons with the other atom. 
B) The atom with nine electrons would lose one of its electrons, and the atom with three electrons would accept it. 
C) The atom with nine electrons would accept one of the electrons from the atom with three electrons. 
D) The atom with three electrons would share one of its electrons with the other atom. 
A) The atom with nine electrons would share one of its electrons with the other atom. 
B) The atom with nine electrons would lose one of its electrons, and the atom with three electrons would accept it. 
C) The atom with nine electrons would accept one of the electrons from the atom with three electrons. 
D) The atom with three electrons would share one of its electrons with the other atom.

Question 16

The study of metabolism includes examination of:

Accepted Answer

A) catabolism. 
B) anabolism. 
C) ATP requirements. 
D) all of the above. 
A) catabolism. 
B) anabolism. 
C) ATP requirements. 
D) all of the above.

Question 17

When atoms combine, they may gain, lose, or share:

Accepted Answer

A) electrons. 
B) protons. 
C) neutrons. 
D) nuclei. 
A) electrons. 
B) protons. 
C) neutrons. 
D) nuclei.

Question 18

Match each term to its corresponding descriptive phrase.
-Indicates an atom will react until it has eight electrons in its outermost energy level

Accepted Answer

A) Proton 
B) Neutron 
C) Electron 
D) Isotopes 
E) Ionic bonds
F)Covalent bonds
G)Octet rule
H)Atomic number
I)Atomic mass
J)Hydrogen bonds 
A) Proton 
B) Neutron 
C) Electron 
D) Isotopes 
E) Ionic bonds
F)Covalent bonds
G)Octet rule
H)Atomic number
I)Atomic mass
J)Hydrogen bonds

Question 19

Electrolytes are characterized by having either a positive or a negative charge.

Accepted Answer

A) True 
 B)False

Question 20

If the pH of a person's blood is 7.4, it would be described as:

Accepted Answer

A) strongly acidic. 
B) neutral. 
C) slightly acidic. 
D) slightly alkaline. 
A) strongly acidic. 
B) neutral. 
C) slightly acidic. 
D) slightly alkaline.

Exam 3: Chemistry of Life

The type of reaction in which substances are combined to form more complex substances is called a(n) _____ reaction.

When your body is building larger and more complex chemical molecules from smaller subunits, what is occurring?

Consider an atom that has an atomic mass of 18. For it to be electrically neutral, it must have 18 electrons.

One function of carbon dioxide is to help maintain proper pH balance in the body.

An example of a catabolic process is:

Chemical bonds formed by the sharing of electrons are called:

According to the general formula, in synthesis reactions, the number of reactants is usually greater than the number of products.

Atomic mass is determined by the number of:

The number of protons in the nucleus of an atom determines its atomic mass.

The pH scale indicates the degree of acidity or alkalinity of a solution.

In a formula for a chemical reaction, the substances on the right of the arrow are referred to as products.

The hydrogen isotope tritium consists of:

pH is the negative logarithm of the hydrogen ion concentration.

A solution with a pH of 6 has 100 times more hydrogen ions than a solution with a pH of 4.

If an atom with a total of nine electrons were to ionically bond with an atom with a total of three electrons, what would occur?

The study of metabolism includes examination of:

When atoms combine, they may gain, lose, or share:

Match each term to its corresponding descriptive phrase. -Indicates an atom will react until it has eight electrons in its outermost energy level

Electrolytes are characterized by having either a positive or a negative charge.

If the pH of a person's blood is 7.4, it would be described as:

Organization of the Body

Homeostasis

Biomolecules

Cell Structure

Cell Function

Cell Growth and Development

Introduction to Tissues

Tissue Types

Skin

Skeletal Tissues

Axial Skeleton

Appendicular Skeleton

Articulations

Axial Muscles

Appendicular Muscles

Muscle Contraction

Nervous System Cells

Nerve Signaling

Central Nervous System

Peripheral Nervous System

Autonomic Nervous System

General Senses

Special Senses

Endocrine Regulation

Endocrine Glands

Blood

Heart

Blood Vessels

Circulation of the Blood

Lymphatic System

Innate Immunity

Adaptive Immunity

Stress

Respiratory Tract

Ventilation

Gas Exchange Transport

Upper Digestive Tract

Lower Digestive Tract

Digestion and Absorption

Nutrition and Metabolism

Urinary System

Fluid and Electrolyte Balance

Acid-Base Balance

Male Reproductive System

Female Reproductive System

Growth, Development, and Aging

Genetics and Heredity

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