Question 1

Cholesterol is an important source of energy for the body.

Accepted Answer

A) True 
 B)False  False

Question 2

Which of the following is the steroid lipid?

Accepted Answer

A)  Cholesterol 
B)  Triglycerides 
C)  Enzymes 
D)  Phospholipids 
A)  Cholesterol 
B)  Triglycerides 
C)  Enzymes 
D)  Phospholipids A

Question 3

Electrons carry a negative electrical charge.

Accepted Answer

A) True 
 B)False  True

Question 4

In hydrolysis,water is used to break the bonds of a larger molecule and convert it to smaller molecules.

Accepted Answer

A) True 
 B)False

Question 5

When ionic compounds dissolve in water,they tend to dissociate into ions.

Accepted Answer

A) True 
 B)False

Question 6

This molecule is found in DNA but not RNA

Accepted Answer

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

Question 7

In a dehydration synthesis reaction,water is always a product.

Accepted Answer

A) True 
 B)False

Question 8

The atomic number of an atom is equal to the number of

Accepted Answer

A)  electrons 
B)  neutrons 
C)  protons 
D)  both b and c above 
A)  electrons 
B)  neutrons 
C)  protons 
D)  both b and c above

Question 9

A strong acid added to a solution would raise the pH more than the same amount of a weak acid added to the solution.

Accepted Answer

A) True 
 B)False

Question 10

The atomic mass of an atom is equal to the number of

Accepted Answer

A)  electrons 
B)  neutrons 
C)  protons 
D)  both b and c above 
A)  electrons 
B)  neutrons 
C)  protons 
D)  both b and c above

Question 11

A molecule of glycogen contains more saccharide units than a molecule of sucrose.

Accepted Answer

A) True 
 B)False

Question 12

Match the name of the element with the correct symbol.
-Na

Accepted Answer

A) Potassium 
B) Phosphorus 
C) Sodium 
D) Calcium 
E) Carbon
F)Hydrogen
G)Chlorine
H)Nitrogen 
A) Potassium 
B) Phosphorus 
C) Sodium 
D) Calcium 
E) Carbon
F)Hydrogen
G)Chlorine
H)Nitrogen

Question 13

LDLs have a high concentration of protein and low concentration of lipid.

Accepted Answer

A) True 
 B)False

Question 14

An atom with 15 protons and 15 electrons would have an atomic mass of 30.

Accepted Answer

A) True 
 B)False

Question 15

Phospholipids are the starting substance for several steroid hormones in the body.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following contributes to the atom's atomic mass?

Accepted Answer

A)  Proton 
B)  Neutron 
C)  Electron 
D)  Both proton and neutron 
A)  Proton 
B)  Neutron 
C)  Electron 
D)  Both proton and neutron

Question 17

Which is not true of the following chemical equation? K⁺ + Cl- KCl

Accepted Answer

A)  The equation indicates that there are two reactants. 
B)  The equation indicates that there is one product. 
C)  The equation indicates that the reaction occurs in both directions equally. 
D)  All of the above are true. 
A)  The equation indicates that there are two reactants. 
B)  The equation indicates that there is one product. 
C)  The equation indicates that the reaction occurs in both directions equally. 
D)  All of the above are true.

Question 18

Explain the difference between structural and functional proteins.Give an example of each.

Accepted Answer

Structural proteins are responsible for

Question 19

The basic building blocks of nucleic acids are nucleotides.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following organs help maintain the proper pH of body fluids?

Accepted Answer

A)  Kidneys by forming urine 
B)  Lungs by exhaling carbon dioxide 
C)  Spleen by filtering the blood 
D)  Both a and b above 
A)  Kidneys by forming urine 
B)  Lungs by exhaling carbon dioxide 
C)  Spleen by filtering the blood 
D)  Both a and b above

Exam 2: Chemistry of Life

Cholesterol is an important source of energy for the body.

Which of the following is the steroid lipid?

Electrons carry a negative electrical charge.

In hydrolysis,water is used to break the bonds of a larger molecule and convert it to smaller molecules.

When ionic compounds dissolve in water,they tend to dissociate into ions.

This molecule is found in DNA but not RNA

In a dehydration synthesis reaction,water is always a product.

The atomic number of an atom is equal to the number of

A strong acid added to a solution would raise the pH more than the same amount of a weak acid added to the solution.

The atomic mass of an atom is equal to the number of

A molecule of glycogen contains more saccharide units than a molecule of sucrose.

Match the name of the element with the correct symbol. -Na

LDLs have a high concentration of protein and low concentration of lipid.

An atom with 15 protons and 15 electrons would have an atomic mass of 30.

Phospholipids are the starting substance for several steroid hormones in the body.

Which of the following contributes to the atom's atomic mass?

Which is not true of the following chemical equation? K⁺ + Cl- KCl

Explain the difference between structural and functional proteins.Give an example of each.

The basic building blocks of nucleic acids are nucleotides.

Which of the following organs help maintain the proper pH of body fluids?

Introduction to the Body

Cells

Tissues

Organ Systems

Skin and Membranes

Skeletal System

Muscular System

Nervous System

Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition and Metabolism

Urinary System

Fluid and Electrolyte Balance

Acid-Base Balance

Reproductive Systems

Growth and Development

Filters