Question 1

The atomic number of carbon is 6. How many unpaired electrons are in its outer shell?

Accepted Answer

A)  Two 
B)  Three 
C)  Four 
D)  Five 
A)  Two 
B)  Three 
C)  Four 
D)  Five

Question 2

Which of the following is not one of the major elements present in the human body?

Accepted Answer

A)  Oxygen 
B)  Zinc 
C)  Carbon 
D)  Potassium 
A)  Oxygen 
B)  Zinc 
C)  Carbon 
D)  Potassium

Question 3

The octet rule refers to the:

Accepted Answer

A)  stability of the nucleus when the protons are in a multiple of eight. 
B)  stability of the atom when there are eight electrons in the outermost energy level. 
C)  stable configuration of the nucleus when there are eight more neutrons than protons. 
D)  principle that one atom can combine with a maximum of eight other atoms. 
A)  stability of the nucleus when the protons are in a multiple of eight. 
B)  stability of the atom when there are eight electrons in the outermost energy level. 
C)  stable configuration of the nucleus when there are eight more neutrons than protons. 
D)  principle that one atom can combine with a maximum of eight other atoms.

Question 4

A molecule can be an element or a compound.

Accepted Answer

A) True 
 B)False

Question 5

The term that is used to describe all of the chemical reactions that occur in body cells is:

Accepted Answer

A)  catabolism. 
B)  metabolism. 
C)  synthesis. 
D)  anabolism. 
A)  catabolism. 
B)  metabolism. 
C)  synthesis. 
D)  anabolism.

Question 6

Which of the following elements is least likely to combine with another element?

Accepted Answer

A)  Hydrogen 
B)  Helium 
C)  Oxygen 
D)  Carbon 
A)  Hydrogen 
B)  Helium 
C)  Oxygen 
D)  Carbon

Question 7

Which of the following represents properties of water?

Accepted Answer

A)  High specific heat 
B)  High heat of vaporization 
C)  Strong polarity 
D)  All of the above 
A)  High specific heat 
B)  High heat of vaporization 
C)  Strong polarity 
D)  All of the above

Question 8

According to the general formula, in exchange reactions, the number of reactants and the number of products are usually equal.

Accepted Answer

A) True 
 B)False

Question 9

Acids are electrolytes that produce OH⁺ ions.

Accepted Answer

A) True 
 B)False

Question 10

Explain what is meant by anabolism and catabolism, and name a process that is an example of each.

Accepted Answer

The answer of Explain what is meant by anabolism and...

Question 11

By definition, inorganic compounds do not contain carbon.

Accepted Answer

A) True 
 B)False

Question 12

An isotope of an element contains the same number of neutrons but different numbers of protons.

Accepted Answer

A) True 
 B)False

Question 13

Which subatomic particles carry a charge?

Accepted Answer

A)  Protons and neutrons 
B)  Neutrons and electrons 
C)  Protons and electrons 
D)  Neutrons only 
A)  Protons and neutrons 
B)  Neutrons and electrons 
C)  Protons and electrons 
D)  Neutrons only

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

Gastric fluid, approximately a 1.5 on the pH scale

Accepted Answer

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

Question 16

Acids:

Accepted Answer

A)  are proton donors. 
B)  taste sour. 
C)  release hydrogen ions in an aqueous solution. 
D)  All of the above are true of acids. 
A)  are proton donors. 
B)  taste sour. 
C)  release hydrogen ions in an aqueous solution. 
D)  All of the above are true of acids.

Question 17

Match each term to its corresponding descriptive phrase.
-Atoms with the same number of protons but a different number of neutrons

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 18

Trace elements in the body make up about 1% of the body weight.

Accepted Answer

A) True 
 B)False

Question 19

Approximately what percentage of body weight is water?

Accepted Answer

A)  40% 
B)  50% 
C)  60% 
D)  70% 
A)  40% 
B)  50% 
C)  60% 
D)  70%

Question 20

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

Accepted Answer

A) True 
 B)False

Exam 3: Chemical Basis of Life

The atomic number of carbon is 6. How many unpaired electrons are in its outer shell?

Which of the following is not one of the major elements present in the human body?

The octet rule refers to the:

A molecule can be an element or a compound.

The term that is used to describe all of the chemical reactions that occur in body cells is:

Which of the following elements is least likely to combine with another element?

Which of the following represents properties of water?

According to the general formula, in exchange reactions, the number of reactants and the number of products are usually equal.

Acids are electrolytes that produce OH⁺ ions.

Explain what is meant by anabolism and catabolism, and name a process that is an example of each.

By definition, inorganic compounds do not contain carbon.

An isotope of an element contains the same number of neutrons but different numbers of protons.

Which subatomic particles carry a charge?

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

Gastric fluid, approximately a 1.5 on the pH scale

Acids:

Match each term to its corresponding descriptive phrase. -Atoms with the same number of protons but a different number of neutrons

Trace elements in the body make up about 1% of the body weight.

Approximately what percentage of body weight is water?

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

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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