Question 1

The atoms of different elements have

Accepted Answer

A) the same atomic number and same atomic weight. 
B) the same atomic number but different atomic weights. 
C) different atomic numbers. 
D) different atomic numbers but the same number of electrons. 
A) the same atomic number and same atomic weight. 
B) the same atomic number but different atomic weights. 
C) different atomic numbers. 
D) different atomic numbers but the same number of electrons.

Question 2

Proteins encode nucleic acids.

Accepted Answer

A) True 
 B)False

Question 3

A complex carbohydrate consists of a phosphate group attached to a sugar molecule.

Accepted Answer

A) True 
 B)False

Question 4

When placed in a solution, HNO₃ dissociates into H+ and NO₃-. The compound HNO3 must be a(n)________.

Accepted Answer

A) base. 
B) nucleotide. 
C) acid. 
D) electron. 
A) base. 
B) nucleotide. 
C) acid. 
D) electron.

Question 5

The atoms of the isotopes of a particular element vary in the number of

Accepted Answer

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

Question 6

Collagen, a helical protein, became straight and flat as the temperature of its environment was changed. Its primary structure was not altered. What happened to cause it to flatten?

Accepted Answer

A) Bonds between carbon and oxygen were broken. 
B) Hydrogen bonds were broken. 
C) Peptide bonds were broken. 
D) Peptide bonds were formed. 
A) Bonds between carbon and oxygen were broken. 
B) Hydrogen bonds were broken. 
C) Peptide bonds were broken. 
D) Peptide bonds were formed.

Question 7

Synthesis reactions are particularly important in the body for

Accepted Answer

A) release of energy. 
B) digestion of food products. 
C) growth of body parts. 
D) neutralization of acids by buffers. 
A) release of energy. 
B) digestion of food products. 
C) growth of body parts. 
D) neutralization of acids by buffers.

Question 8

Which of the following is the least likely to dissolve in water?

Accepted Answer

A) Albumin 
B) A triglyceride 
C) Table sugar (sucrose) 
D) Nucleotides 
A) Albumin 
B) A triglyceride 
C) Table sugar (sucrose) 
D) Nucleotides

Question 9

The number of protons in an atom of an element always equals its atomic weight.

Accepted Answer

A) True 
 B)False

Question 10

The compound H₂SO₄ will dissociate in water to create HSO₄⁻ and H⁺. The product HSO₄⁻ is a base.

Accepted Answer

A) True 
 B)False

Question 11

Chemistry deals with

Accepted Answer

A) the composition of and changes to substances that make up living as well as non-living matter. 
B) the composition of and changes to substances found in organisms only. 
C) the composition of and changes to substances that make up non-living matter only. 
D) the location of organs in body cavities. 
A) the composition of and changes to substances that make up living as well as non-living matter. 
B) the composition of and changes to substances found in organisms only. 
C) the composition of and changes to substances that make up non-living matter only. 
D) the location of organs in body cavities.

Question 12

The parts of a protein that change when it denatures are

Accepted Answer

A) the primary and secondary structures. 
B) the secondary and tertiary structures. 
C) the amino acid sequence and the secondary structure. 
D) the tertiary and quaternary structures. 
A) the primary and secondary structures. 
B) the secondary and tertiary structures. 
C) the amino acid sequence and the secondary structure. 
D) the tertiary and quaternary structures.

Question 13

DNA and RNA differ in that

Accepted Answer

A) RNA has deoxyribose and DNA has ribose. 
B) RNA is double-stranded and DNA is single-stranded. 
C) DNA holds genetic information and RNA uses that information to synthesize protein. 
D) RNA is found only in the nucleus and DNA is found only in the cytoplasm. 
A) RNA has deoxyribose and DNA has ribose. 
B) RNA is double-stranded and DNA is single-stranded. 
C) DNA holds genetic information and RNA uses that information to synthesize protein. 
D) RNA is found only in the nucleus and DNA is found only in the cytoplasm.

Question 14

A protein is formed from a sequence of amino acids.

Accepted Answer

A) True 
 B)False

Question 15

In a covalent bond

Accepted Answer

A) one atom loses and another atom gains electrons. 
B) atoms share a pair or more of electrons. 
C) oppositely charged atoms attract. 
D) like-charged atoms repel. 
A) one atom loses and another atom gains electrons. 
B) atoms share a pair or more of electrons. 
C) oppositely charged atoms attract. 
D) like-charged atoms repel.

Question 16

Which of the following best describes the reaction NaNO₃ + HCl → HNO₃ + NaCl?

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 17

Lard will ________ than peanut oil.

Accepted Answer

A) contain more water 
B) have more glycerol 
C) have more single carbon-carbon bonds 
D) have fewer hydrogen atoms bonded to carbon atoms 
A) contain more water 
B) have more glycerol 
C) have more single carbon-carbon bonds 
D) have fewer hydrogen atoms bonded to carbon atoms

Question 18

The breakdown of table sugar into glucose and fructose is an example of a(n)________ reaction.

Accepted Answer

A) synthesis 
B) hydrolysis 
C) acid-base 
D) exchange 
A) synthesis 
B) hydrolysis 
C) acid-base 
D) exchange

Question 19

Two or more atoms bonding form a ________.

Accepted Answer

The answer of Two or more atoms bonding form a...

Question 20

An acid reacting with a base is

Accepted Answer

A) a synthesis reaction. 
B) hydrolysis. 
C) a decomposition reaction. 
D) an exchange reaction. 
A) a synthesis reaction. 
B) hydrolysis. 
C) a decomposition reaction. 
D) an exchange reaction.

Exam 2: Chemical Basis of Life

The atoms of different elements have

Proteins encode nucleic acids.

A complex carbohydrate consists of a phosphate group attached to a sugar molecule.

When placed in a solution, HNO₃ dissociates into H+ and NO₃-. The compound HNO3 must be a(n)________.

The atoms of the isotopes of a particular element vary in the number of

Collagen, a helical protein, became straight and flat as the temperature of its environment was changed. Its primary structure was not altered. What happened to cause it to flatten?

Synthesis reactions are particularly important in the body for

Which of the following is the least likely to dissolve in water?

The number of protons in an atom of an element always equals its atomic weight.

The compound H₂SO₄ will dissociate in water to create HSO₄⁻ and H⁺. The product HSO₄⁻ is a base.

Chemistry deals with

The parts of a protein that change when it denatures are

DNA and RNA differ in that

A protein is formed from a sequence of amino acids.

In a covalent bond

Which of the following best describes the reaction NaNO₃ + HCl → HNO₃ + NaCl?

Lard will ________ than peanut oil.

The breakdown of table sugar into glucose and fructose is an example of a(n)________ reaction.

Two or more atoms bonding form a ________.

An acid reacting with a base is

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

Filters