Question 1

Fats and oils function well as energy-storage molecules because they contain carbon.

Accepted Answer

A) True 
 B)False

Question 2

What passes through the digestive tract as fiber or roughage?

Accepted Answer

A)  Chitin 
B)  Glucose 
C)  Glycogen 
D)  Starch 
E)  Cellulose 
A)  Chitin 
B)  Glucose 
C)  Glycogen 
D)  Starch 
E)  Cellulose

Question 3

An element has its outermost orbital full and contains more than 2 electrons.Which element is this?

Accepted Answer

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

Question 4

Why is He over Ne in the periodic table? (Refer to Figure 2.1)

Accepted Answer

A)  They both have the same atomic mass. 
B)  They both have the same number of electrons in their outermost orbital. 
C)  They both have a full outermost orbital. 
D)  They both have the same atomic number. 
E)  They both have the same number of protons in their nuclei. 
A)  They both have the same atomic mass. 
B)  They both have the same number of electrons in their outermost orbital. 
C)  They both have a full outermost orbital. 
D)  They both have the same atomic number. 
E)  They both have the same number of protons in their nuclei.

Question 5

Which polysaccharide is branched the most?

Accepted Answer

A)  cellulose 
B)  starch 
C)  glycogen 
A)  cellulose 
B)  starch 
C)  glycogen

Question 6

William noticed blood mysteriously climbing up a capillary tube.This is an example of which property of water?

Accepted Answer

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

Question 7

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 8

The smallest unit of an element that still retains the chemical and physical properties of that element is called

Accepted Answer

A)  an isotope. 
B)  a nucleus. 
C)  an atom. 
D)  a molecular bond. 
E)  a neutrino. 
A)  an isotope. 
B)  a nucleus. 
C)  an atom. 
D)  a molecular bond. 
E)  a neutrino.

Question 9

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

Accepted Answer

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

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

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 12

The reason water is polar is because

Accepted Answer

A)  in polar molecules atoms share electrons evenly. 
B)  the oxygen atom is larger than the hydrogen atom. 
C)  hydrophilic molecules interact with water. 
D)  hydrophobic molecules do not interact with water. 
E)  there is a transfer of electrons from the hydrogen to the oxygen. 
A)  in polar molecules atoms share electrons evenly. 
B)  the oxygen atom is larger than the hydrogen atom. 
C)  hydrophilic molecules interact with water. 
D)  hydrophobic molecules do not interact with water. 
E)  there is a transfer of electrons from the hydrogen to the oxygen.

Question 13

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 14

The membranes of cells are composed of

Accepted Answer

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

Question 15

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 16

How many elements occur naturally?

Accepted Answer

A)  112 
B)  92 
C)  64 
D)  32 
E)  6 
A)  112 
B)  92 
C)  64 
D)  32 
E)  6

Question 17

Starch,cellulose,and glycogen are alike in that

Accepted Answer

A)  they are all made of glucose. 
B)  they contain the same number of side chains. 
C)  they have the same types of bonds between the monomer units. 
D)  they are all found in animals. 
E)  they can all be digested by our bodies. 
A)  they are all made of glucose. 
B)  they contain the same number of side chains. 
C)  they have the same types of bonds between the monomer units. 
D)  they are all found in animals. 
E)  they can all be digested by our bodies.

Question 18

Which of the following is not a monosaccharide?

Accepted Answer

A)  glucose 
B)  fructose 
C)  galactose 
D)  maltose 
A)  glucose 
B)  fructose 
C)  galactose 
D)  maltose

Question 19

Hydrogen bonds

Accepted Answer

A)  result from the loss of neutrons by an atom. 
B)  result in the formation of salts. 
C)  involve the loss and gain of electrons. 
D)  involve the sharing of electrons. 
E)  are relatively weak and can be broken rather easily. 
A)  result from the loss of neutrons by an atom. 
B)  result in the formation of salts. 
C)  involve the loss and gain of electrons. 
D)  involve the sharing of electrons. 
E)  are relatively weak and can be broken rather easily.

Question 20

In an acidic solution

Accepted Answer

A)  the number of H+ is less than the number of OH-. 
B)  the number of H+ is greater than the number of OH-. 
C)  the number of H+ is equal to the number of OH-. 
A)  the number of H+ is less than the number of OH-. 
B)  the number of H+ is greater than the number of OH-. 
C)  the number of H+ is equal to the number of OH-.

Exam 2: Chemistry of Life

Fats and oils function well as energy-storage molecules because they contain carbon.

What passes through the digestive tract as fiber or roughage?

An element has its outermost orbital full and contains more than 2 electrons.Which element is this?

Why is He over Ne in the periodic table? (Refer to Figure 2.1)

Which polysaccharide is branched the most?

William noticed blood mysteriously climbing up a capillary tube.This is an example of which property of water?

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

The smallest unit of an element that still retains the chemical and physical properties of that element is called

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

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

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

The reason water is polar is because

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

The membranes of cells are composed of

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

How many elements occur naturally?

Starch,cellulose,and glycogen are alike in that

Which of the following is not a monosaccharide?

Hydrogen bonds

In an acidic solution

Exploring Life and Science

Cell Structure and Function

Organization and Regulation of Body Systems

Cardiovascular System: Heart and Blood Vessels

Cardiovascular System: Blood

Lymphatic System and Immunity

Digestive System and Nutrition

Respiratory System

Urinary System and Excretion

Skeletal System

Muscular System

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Senses

Endocrine System

Reproductive System

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