Question 1

Which of the following characteristics of water is most responsible for the sinking of the Titanic?

Accepted Answer

A)  Water is liquid at room temperature. 
B)  Water has a high heat of vaporization. 
C)  The temperature of liquid water rises and falls slowly. 
D)  Frozen water is less dense than liquid water. 
E)  Water molecules are cohesive. 
A)  Water is liquid at room temperature. 
B)  Water has a high heat of vaporization. 
C)  The temperature of liquid water rises and falls slowly. 
D)  Frozen water is less dense than liquid water. 
E)  Water molecules are cohesive.

Question 2

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

Question 3

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 4

Which polysaccharide is branched the most?

Accepted Answer

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

Question 5

The function of RNA in the body is to store the genetic information in the nucleus.

Accepted Answer

A) True 
 B)False

Question 6

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 7

Which type of bond is responsible for holding two water molecules together,creating the properties of water?

Accepted Answer

A)  hydrogen 
B)  covalent 
C)  ionic 
D)  polar 
E)  double covalent 
A)  hydrogen 
B)  covalent 
C)  ionic 
D)  polar 
E)  double covalent

Question 8

Which grouping of elements is found in carbohydrates?

Accepted Answer

A)  C - H - O 
B)  C - H - P 
C)  H - O - Cl 
D)  N - S - O 
E)  Ca - H - O 
A)  C - H - O 
B)  C - H - P 
C)  H - O - Cl 
D)  N - S - O 
E)  Ca - H - O

Question 9

What passes through the digestive tract as fiber or roughage?

Accepted Answer

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

Question 10

The membranes of cells are composed primarily of

Accepted Answer

A)  phospholipids. 
B)  fats. 
C)  oils. 
D)  steroids. 
E)  triglycerides. 
A)  phospholipids. 
B)  fats. 
C)  oils. 
D)  steroids. 
E)  triglycerides.

Question 11

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

Question 12

Joining small molecules (monomers)together to form longer chains (polymers)requires a process called

Accepted Answer

A)  a hydrolysis reaction. 
B)  a dehydration reaction. 
C)  monomerization. 
D)  emulsification. 
E)  disassembly. 
A)  a hydrolysis reaction. 
B)  a dehydration reaction. 
C)  monomerization. 
D)  emulsification. 
E)  disassembly.

Question 13

A fatty acid that contains only single bonds between the carbon atoms is considered

Accepted Answer

A)  saturated. 
B)  unsaturated. 
C)  trans unsaturated. 
D)  a cholestrol. 
E)  a steroid. 
A)  saturated. 
B)  unsaturated. 
C)  trans unsaturated. 
D)  a cholestrol. 
E)  a steroid.

Question 14

Fats and oils function better than other biological molecules as energy-storage molecules because of the carbon they contain.

Accepted Answer

A) True 
 B)False

Question 15

Fats are usually of animal origin,while oils are usually of plant origin.

Accepted Answer

A) True 
 B)False

Question 16

Our body is capable of converting starch into glycogen.

Accepted Answer

A) True 
 B)False

Question 17

The atomic number of an atom is determined by the number of

Accepted Answer

A)  protons. 
B)  neutrons. 
C)  electrons. 
D)  protons and neutrons. 
E)  protons and electrons. 
A)  protons. 
B)  neutrons. 
C)  electrons. 
D)  protons and neutrons. 
E)  protons and electrons.

Question 18

Carbon dating is a common method employed in dating certain kinds of fossils.It is based on 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 19

List the functions of proteins.

Accepted Answer

Functions of proteins include:
1.support

Question 20

Ca3(PO4)2 represents a(n)

Accepted Answer

A)  element. 
B)  mixture. 
C)  compound. 
D)  isotope. 
E)  atom. 
A)  element. 
B)  mixture. 
C)  compound. 
D)  isotope. 
E)  atom.

Exam 2: Chemistry of Life

Which of the following characteristics of water is most responsible for the sinking of the Titanic?

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

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

Which polysaccharide is branched the most?

The function of RNA in the body is to store the genetic information in the nucleus.

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

Which type of bond is responsible for holding two water molecules together,creating the properties of water?

Which grouping of elements is found in carbohydrates?

What passes through the digestive tract as fiber or roughage?

The membranes of cells are composed primarily of

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

Joining small molecules (monomers)together to form longer chains (polymers)requires a process called

A fatty acid that contains only single bonds between the carbon atoms is considered

Fats and oils function better than other biological molecules as energy-storage molecules because of the carbon they contain.

Fats are usually of animal origin,while oils are usually of plant origin.

Our body is capable of converting starch into glycogen.

The atomic number of an atom is determined by the number of

Carbon dating is a common method employed in dating certain kinds of fossils.It is based on 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?

List the functions of proteins.

Ca3(PO4)2 represents a(n)

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

Infectious Diseases

Digestive System and Nutrition

Respiratory System

Urinary System

Skeletal System

Muscular System

Nervous System

Senses

Endocrine System

Reproductive System

Development and Aging

Patterns of Chromosome Inheritance

Cancer

Patterns of Genetic Inheritance

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Human Evolution

Ecology and the Nature of Ecosystems

Human Interactions With the Biosphere

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Carbon dating is a common method employed in dating certain kinds of fossils.It is based on 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?

Ca₃(PO₄)₂ represents a(n)