Question 1

Matter is composed of elements, which are composed of ________.

Accepted Answer

A) atoms 
B) inorganic molecules 
C) organic molecules 
D) chemicals 
A) atoms 
B) inorganic molecules 
C) organic molecules 
D) chemicals A

Question 2

Nucleic acids are composed of building blocks called amino acids.

Accepted Answer

A) True 
 B)False  False

Question 3

The following reaction occurs: HBr + NaOH → NaBr + H₂O. What is the product NaBr considered in this reaction?

Accepted Answer

A) A buffer 
B) A salt 
C) A solvent 
D) A protein 
A) A buffer 
B) A salt 
C) A solvent 
D) A protein B

Question 4

Which of the following molecules does not have a polar region?

Accepted Answer

A) Water 
B) Triglyceride 
C) Water-soluble amino acid 
D) Glucose 
A) Water 
B) Triglyceride 
C) Water-soluble amino acid 
D) Glucose

Question 5

The midpoint of the pH scale is pH ________.

Accepted Answer

The answer of The midpoint of the pH scale is...

Question 6

Proteins

Accepted Answer

A) are structural materials. 
B) can function as enzymes. 
C) contain C, H, O, and N, and sometimes S. 
D) All of the answer choices are correct. 
A) are structural materials. 
B) can function as enzymes. 
C) contain C, H, O, and N, and sometimes S. 
D) All of the answer choices are correct.

Question 7

The difference in hydrogen ion concentration between solutions with pH 4 and pH 5 is

Accepted Answer

A) twofold. 
B) fivefold. 
C) tenfold. 
D) twentyfold. 
A) twofold. 
B) fivefold. 
C) tenfold. 
D) twentyfold.

Question 8

A water solution that contains equal numbers of hydrogen ions and hydroxide ions is

Accepted Answer

A) acidic. 
B) basic. 
C) alkaline. 
D) neutral. 
A) acidic. 
B) basic. 
C) alkaline. 
D) neutral.

Question 9

A change from Fe²⁺ to Fe³⁺ would require a change in the number of ________.

Accepted Answer

The answer of A change from Fe²⁺ to Fe³⁺ would...

Question 10

________ has the unique ability among types of organic molecules to replicate.

Accepted Answer

DNA
Deoxyr

Question 11

If helium (He)were to gain a proton, it would become

Accepted Answer

A) He⁺. 
B) He−. 
C) Helium-3. 
D) Lithium. 
A) He⁺. 
B) He−. 
C) Helium-3. 
D) Lithium.

Question 12

The ________ uses iodine in a synthesis reaction.

Accepted Answer

A) spleen 
B) liver 
C) thymus 
D) thyroid gland 
A) spleen 
B) liver 
C) thymus 
D) thyroid gland

Question 13

The isotope most likely to be used to study the thyroid gland is

Accepted Answer

A) iodine-131. 
B) iron-59. 
C) thallium-201. 
D) cobalt-60. 
A) iodine-131. 
B) iron-59. 
C) thallium-201. 
D) cobalt-60.

Question 14

Atomic radiation is useful for treating cancer because

Accepted Answer

A) radiation affects cancer cells but not normal cells. 
B) radiation protects normal cells against the effects of cancer. 
C) radiation harms cancer cells more readily than it does most non-cancer cells. 
D) normal cells are not affected by radiation. 
A) radiation affects cancer cells but not normal cells. 
B) radiation protects normal cells against the effects of cancer. 
C) radiation harms cancer cells more readily than it does most non-cancer cells. 
D) normal cells are not affected by radiation.

Question 15

If Ca⁺² were to gain 2 electrons, it would become Ca⁰ and become neutral.

Accepted Answer

A) True 
 B)False

Question 16

When atoms form chemical bonds, the subatomic particles that directly interact are the ________.

Accepted Answer

The answer of When atoms form chemical bonds, the subatomic...

Question 17

Positron emission tomography (PET)imaging follows the emission of

Accepted Answer

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

Question 18

DNA and RNA are nucleic acids.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following best describes the reaction H₂CO₃ → H₂O + CO₂?

Accepted Answer

A) Decomposition reaction 
B) Exchange reaction 
C) Reversible reaction 
D) Synthesis reaction 
A) Decomposition reaction 
B) Exchange reaction 
C) Reversible reaction 
D) Synthesis reaction

Question 20

A triglyceride consists of

Accepted Answer

A) 3 glycerols and 1 fatty acid. 
B) 3 glucose molecules. 
C) 3 fatty acids and 3 phosphate groups. 
D) 3 fatty acids and 1 glycerol. 
A) 3 glycerols and 1 fatty acid. 
B) 3 glucose molecules. 
C) 3 fatty acids and 3 phosphate groups. 
D) 3 fatty acids and 1 glycerol.

Exam 2: Chemical Basis of Life

Matter is composed of elements, which are composed of ________.

Nucleic acids are composed of building blocks called amino acids.

The following reaction occurs: HBr + NaOH → NaBr + H₂O. What is the product NaBr considered in this reaction?

Which of the following molecules does not have a polar region?

The midpoint of the pH scale is pH ________.

Proteins

The difference in hydrogen ion concentration between solutions with pH 4 and pH 5 is

A water solution that contains equal numbers of hydrogen ions and hydroxide ions is

A change from Fe²⁺ to Fe³⁺ would require a change in the number of ________.

________ has the unique ability among types of organic molecules to replicate.

If helium (He)were to gain a proton, it would become

The ________ uses iodine in a synthesis reaction.

The isotope most likely to be used to study the thyroid gland is

Atomic radiation is useful for treating cancer because

If Ca⁺² were to gain 2 electrons, it would become Ca⁰ and become neutral.

When atoms form chemical bonds, the subatomic particles that directly interact are the ________.

Positron emission tomography (PET)imaging follows the emission of

DNA and RNA are nucleic acids.

Which of the following best describes the reaction H₂CO₃ → H₂O + CO₂?

A triglyceride consists of

Introduction to Human Anatomy and Physiology

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Joints of the Skeletal System

Muscular System

Nervous System I: Basic Structure and Function

Nervous System II: Divisions of the Nervous System

Nervous System III: Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestive System

Nutrition and Metabolism

Respiratory System

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

Pregnancy, Growth, and Development

Genetics and Genomics

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