Question 1

Fifty percent or more of a normal adult's body weight is water.

Accepted Answer

A) True 
 B)False

Question 2

A negatively charged subatomic particle that moves around the nucleus is a(n):

Accepted Answer

A)  orbital. 
B)  proton. 
C)  neutron. 
D)  electron. 
A)  orbital. 
B)  proton. 
C)  neutron. 
D)  electron.

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

Match each term to its corresponding descriptive phrase.
-Number of protons an atom has

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 5

The kind of element is determined by the number of:

Accepted Answer

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

Question 6

A solution that contains a greater concentration of hydroxide ions (OH-) than hydrogen ions (H⁺) is a(n) _____ solution.

Accepted Answer

A)  acidic 
B)  alkaline (basic) 
C)  neutral 
D)  Not enough information is given to determine the character of the solution. 
A)  acidic 
B)  alkaline (basic) 
C)  neutral 
D)  Not enough information is given to determine the character of the solution.

Question 7

Which of the following is not true of all isotopes of oxygen?

Accepted Answer

A)  They can all react with two hydrogen atoms to form water. 
B)  They have the same number of protons. 
C)  They have the same atomic mass. 
D)  All of the above are true of isotopes of oxygen. 
A)  They can all react with two hydrogen atoms to form water. 
B)  They have the same number of protons. 
C)  They have the same atomic mass. 
D)  All of the above are true of isotopes of oxygen.

Question 8

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 9

Match each term to its corresponding descriptive phrase.
-Subatomic particle that has a negative charge and is found in a "cloud" surrounding the nucleus of the atom

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 10

Match each term to its corresponding descriptive phrase.
-Subatomic particle with no charge

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 11

Synthesis reactions release energy for use by the cell.

Accepted Answer

A) True 
 B)False

Question 12

The mass of a proton is almost exactly equal to the mass of an electron.

Accepted Answer

A) True 
 B)False

Question 13

A double covalent bond involves the sharing of two electrons.

Accepted Answer

A) True 
 B)False

Question 14

The reaction between hydrogen and oxygen needed to form water is an example of a:

Accepted Answer

A)  hydrogen bond. 
B)  synthesis reaction. 
C)  decomposition reaction. 
D)  None of the above is correct. 
A)  hydrogen bond. 
B)  synthesis reaction. 
C)  decomposition reaction. 
D)  None of the above is correct.

Question 15

A neutral atom that has 22 protons must have 22 neutrons.

Accepted Answer

A) True 
 B)False

Question 16

The number and arrangement of electrons orbiting in an atom's outer shell determine its chemical activity.

Accepted Answer

A) True 
 B)False

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

Household ammonia, an 11 on the pH scale

Accepted Answer

A)  Acid 
B)  Base 
A)  Acid 
B)  Base

Question 19

The digestion of food is an example of a decomposition reaction.

Accepted Answer

A) True 
 B)False

Question 20

Electrolytes are:

Accepted Answer

A)  organic compounds. 
B)  called cations if they have a negative charge. 
C)  called cations if they have a positive charge. 
D)  both A and B. 
A)  organic compounds. 
B)  called cations if they have a negative charge. 
C)  called cations if they have a positive charge. 
D)  both A and B.

Exam 3: Chemical Basis of Life

Fifty percent or more of a normal adult's body weight is water.

A negatively charged subatomic particle that moves around the nucleus is a(n):

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

Match each term to its corresponding descriptive phrase. -Number of protons an atom has

The kind of element is determined by the number of:

A solution that contains a greater concentration of hydroxide ions (OH-) than hydrogen ions (H⁺) is a(n) _____ solution.

Which of the following is not true of all isotopes of oxygen?

An example of a catabolic process is:

Match each term to its corresponding descriptive phrase. -Subatomic particle that has a negative charge and is found in a "cloud" surrounding the nucleus of the atom

Match each term to its corresponding descriptive phrase. -Subatomic particle with no charge

Synthesis reactions release energy for use by the cell.

The mass of a proton is almost exactly equal to the mass of an electron.

A double covalent bond involves the sharing of two electrons.

The reaction between hydrogen and oxygen needed to form water is an example of a:

A neutral atom that has 22 protons must have 22 neutrons.

The number and arrangement of electrons orbiting in an atom's outer shell determine its chemical activity.

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

Household ammonia, an 11 on the pH scale

The digestion of food is an example of a decomposition reaction.

Electrolytes are:

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 and Development

Genetics and Heredity

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