Question 1

A hydrolysis reaction involves the loss of water.

Accepted Answer

A) True 
 B)False  False

Question 2

In an atom, the number of protons always equals the number

Accepted Answer

A)  of electrons. 
B)  of neutrons. 
C)  of neutrons and protons. 
D)  of quarks. 
E)  of neutrinos. 
A)  of electrons. 
B)  of neutrons. 
C)  of neutrons and protons. 
D)  of quarks. 
E)  of neutrinos. A

Question 3

Which polysacccharide is stored as an energy source in the body of animals?

Accepted Answer

A)  glycogen 
B)  glucose 
C)  cellulose 
D)  starch 
E)  chitin 
A)  glycogen 
B)  glucose 
C)  cellulose 
D)  starch 
E)  chitin A

Question 4

An element cannot be broken down by chemical means.

Accepted Answer

A) True 
 B)False

Question 5

Carbon dating is a common method employed in dating certain kinds of fossils. It is based upon the radioactive decay of an isotope of carbon (C14). Referring to the atomic number of carbon attained from the periodic table, how many neutrons does C14 have?

Accepted Answer

A)  2 
B)  4 
C)  8 
D)  12 
E)  14 
A)  2 
B)  4 
C)  8 
D)  12 
E)  14

Question 6

The main function of carbohydrates is for long-term energy storage.

Accepted Answer

A) True 
 B)False

Question 7

An alpha helix or a beta sheet are examples of what level of protein structure?

Accepted Answer

A)  secondary 
B)  primary 
C)  tertiary 
D)  quaternary 
E)  octagon 
A)  secondary 
B)  primary 
C)  tertiary 
D)  quaternary 
E)  octagon

Question 8

A solution with a pH of 7 has 10 times as many H+ as a pH of 6.

Accepted Answer

A) True 
 B)False

Question 9

After lunch our digestive system will use the process of hydrolysis to break the food down into smaller subunits.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following nitrogenous bases is NOT found in DNA?

Accepted Answer

A)  cytosine 
B)  thymine 
C)  uracil 
D)  guanine 
E)  adenine 
A)  cytosine 
B)  thymine 
C)  uracil 
D)  guanine 
E)  adenine

Question 11

Which of the following is not a function of proteins?

Accepted Answer

A)  quick energy 
B)  support 
C)  transport 
D)  enzymes 
E)  motion 
A)  quick energy 
B)  support 
C)  transport 
D)  enzymes 
E)  motion

Question 12

Which polysaccharide is consumed as a source of fiber?

Accepted Answer

A)  cellulose 
B)  glycogen 
C)  glucose 
D)  chitin 
E)  starch 
A)  cellulose 
B)  glycogen 
C)  glucose 
D)  chitin 
E)  starch

Question 13

ATP is called the energy currency of the body because it is a type of electricity.

Accepted Answer

A) True 
 B)False

Question 14

Atoms that share electrons have what type of bonds?

Accepted Answer

A)  covalent 
B)  neutral 
C)  hydrogen 
D)  colloidal 
E)  ionic 
A)  covalent 
B)  neutral 
C)  hydrogen 
D)  colloidal 
E)  ionic

Question 15

The primary level of protein structure is composed of amino acids in a linear sequence joined by peptide bonds.

Accepted Answer

A) True 
 B)False

Question 16

ATP carries energy in the form of high-energy

Accepted Answer

A)  carbohydrate bonds. 
B)  peptide bonds. 
C)  lipid bonds. 
D)  phosphate bonds. 
E)  hydrogen bonds 
A)  carbohydrate bonds. 
B)  peptide bonds. 
C)  lipid bonds. 
D)  phosphate bonds. 
E)  hydrogen bonds

Question 17

The sides of the DNA ladder (backbone) are

Accepted Answer

A)  alternating carbons and nitrogens. 
B)  the R groups. 
C)  the nitrogenous bases. 
D)  alternating nitrogens and phosphates. 
E)  sugars and phosphates. 
A)  alternating carbons and nitrogens. 
B)  the R groups. 
C)  the nitrogenous bases. 
D)  alternating nitrogens and phosphates. 
E)  sugars and phosphates.

Question 18

Which of the following elements will have more than 2 electrons and have a full outer orbital?

Accepted Answer

A)  He 
B)  Ne 
C)  C 
D)  N 
E)  O 
A)  He 
B)  Ne 
C)  C 
D)  N 
E)  O

Question 19

All amino acids are alike in that their R groups are polar.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is not one of the four classes of organic molecules found in cells?

Accepted Answer

A)  vitamins 
B)  lipids 
C)  proteins 
D)  carbohydrates 
E)  nucleic acids 
A)  vitamins 
B)  lipids 
C)  proteins 
D)  carbohydrates 
E)  nucleic acids

Exam 2: Chemistry of Life

A hydrolysis reaction involves the loss of water.

In an atom, the number of protons always equals the number

Which polysacccharide is stored as an energy source in the body of animals?

An element cannot be broken down by chemical means.

Carbon dating is a common method employed in dating certain kinds of fossils. It is based upon the radioactive decay of an isotope of carbon (C14). Referring to the atomic number of carbon attained from the periodic table, how many neutrons does C14 have?

The main function of carbohydrates is for long-term energy storage.

An alpha helix or a beta sheet are examples of what level of protein structure?

A solution with a pH of 7 has 10 times as many H+ as a pH of 6.

After lunch our digestive system will use the process of hydrolysis to break the food down into smaller subunits.

Which of the following nitrogenous bases is NOT found in DNA?

Which of the following is not a function of proteins?

Which polysaccharide is consumed as a source of fiber?

ATP is called the energy currency of the body because it is a type of electricity.

Atoms that share electrons have what type of bonds?

The primary level of protein structure is composed of amino acids in a linear sequence joined by peptide bonds.

ATP carries energy in the form of high-energy

The sides of the DNA ladder (backbone) are

Which of the following elements will have more than 2 electrons and have a full outer orbital?

All amino acids are alike in that their R groups are polar.

Which of the following is not one of the four classes of organic molecules found in cells?

Exploring Life and Science

Cell Structure and Function

Organization and Regulation of Body Systems

Cardiovascular System: Heart and Blood Vessels

Cardiovascular System: Blood

The Lymphatic and Immune Systems

Digestive System and Nutrition

Respiratory System

Urinary System

Skeletal System

Muscular System

Nervous System

Senses

Endocrine System

Reproductive System

Human Development and Aging

Patterns of Chromosome Inheritance

Cancer

Patterns of Genetic Inheritance

DNA Biology and Technology

Human Evolution

Global Ecology and Human Interferences

Human Population, Planetary Resources, and Conservation

Infectious Diseases Supplement

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Carbon dating is a common method employed in dating certain kinds of fossils. It is based upon the radioactive decay of an isotope of carbon (C¹⁴). Referring to the atomic number of carbon attained from the periodic table, how many neutrons does C¹⁴ have?

A solution with a pH of 7 has 10 times as many H⁺ as a pH of 6.