Question 1

-Water accounts for 50% of the weight of a young adult female and 60% of a young adult male. What kind of atom is found at "D"?

Accepted Answer

A)  hydrogen bond 
B)  water molecule 
C)  oxygen atom 
D)  hydrogen atom 
E)  polar covalent bond 
A)  hydrogen bond 
B)  water molecule 
C)  oxygen atom 
D)  hydrogen atom 
E)  polar covalent bond

Question 2

Which of the following is an organic compound?

Accepted Answer

A)  hydrochloric acid (HCl) 
B)  salt (NaCl) 
C)  sucrose (C12H22O11) 
D)  water (H2O) 
E)  None of these choices are correct. 
A)  hydrochloric acid (HCl) 
B)  salt (NaCl) 
C)  sucrose (C12H22O11) 
D)  water (H2O) 
E)  None of these choices are correct.

Question 3

Chemical energy

Accepted Answer

A)  moves matter. 
B)  results from the position or movement of objects. 
C)  is a form of potential energy within chemical bonds. 
D)  comes from the sun. 
E)  is not important in physiological processes. 
A)  moves matter. 
B)  results from the position or movement of objects. 
C)  is a form of potential energy within chemical bonds. 
D)  comes from the sun. 
E)  is not important in physiological processes.

Question 4

Which of the following means a change in shape of a protein?

Accepted Answer

A)  amino acid 
B)  peptide bond 
C)  primary structure of protein 
D)  secondary structure of protein 
E)  denaturation 
A)  amino acid 
B)  peptide bond 
C)  primary structure of protein 
D)  secondary structure of protein 
E)  denaturation

Question 5

Molecules that form when electrons are shared unequally between atoms are called

Accepted Answer

A)  salt molecules. 
B)  polar molecules. 
C)  nonpolar molecules. 
D)  lopsided molecules. 
E)  None of these choices are correct. 
A)  salt molecules. 
B)  polar molecules. 
C)  nonpolar molecules. 
D)  lopsided molecules. 
E)  None of these choices are correct.

Question 6

Large carbohydrates are formed from smaller units called

Accepted Answer

A)  phosphate groups. 
B)  monosaccharides. 
C)  amino acids. 
D)  steroids. 
E)  lipids. 
A)  phosphate groups. 
B)  monosaccharides. 
C)  amino acids. 
D)  steroids. 
E)  lipids.

Question 7

The minimum amount of energy that reactants must have to start a chemical reaction is called

Accepted Answer

A)  kinetic energy. 
B)  mechanical energy. 
C)  activation energy. 
D)  electromagnetic energy. 
E)  potential energy. 
A)  kinetic energy. 
B)  mechanical energy. 
C)  activation energy. 
D)  electromagnetic energy. 
E)  potential energy.

Question 8

The element uranium has a mass number of 238 and contains 92 protons. How many neutrons does an atom of uranium have?

Accepted Answer

The answer of The element uranium has a mass number...

Question 9

In ionic bonding,

Accepted Answer

A)  only non-polar molecules are involved. 
B)  a "sea of electrons" forms. 
C)  electrons are transferred from one atom to another. 
D)  two hydrogen atoms share one pair of electrons. 
E)  the charge of the ion does not play a role in the bond. 
A)  only non-polar molecules are involved. 
B)  a "sea of electrons" forms. 
C)  electrons are transferred from one atom to another. 
D)  two hydrogen atoms share one pair of electrons. 
E)  the charge of the ion does not play a role in the bond.

Question 10

Energy

Accepted Answer

A)  has mass. 
B)  is the capacity to do work. 
C)  has weight. 
D)  takes up space. 
E)  cannot be stored. 
A)  has mass. 
B)  is the capacity to do work. 
C)  has weight. 
D)  takes up space. 
E)  cannot be stored.

Question 11

Solution A increases its acidity. This means that the

Accepted Answer

A)  solution is closer to neutrality. 
B)  pH of the solution has increased. 
C)  solution will now accept more protons. 
D)  number of hydrogen ions has decreased. 
E)  number of hydrogen ions has increased. 
A)  solution is closer to neutrality. 
B)  pH of the solution has increased. 
C)  solution will now accept more protons. 
D)  number of hydrogen ions has decreased. 
E)  number of hydrogen ions has increased.

Question 12

Which of the following factors will influence the rate of chemical reactions?

Accepted Answer

A)  temperature 
B)  concentration of reactants 
C)  presence of catalysts 
D)  presence of enzymes 
E)  All of these factors will influence the rate of chemical reactions. 
A)  temperature 
B)  concentration of reactants 
C)  presence of catalysts 
D)  presence of enzymes 
E)  All of these factors will influence the rate of chemical reactions.

Question 13

Phospholipids have a hydrophilic end which is

Accepted Answer

A)  polar and water-insoluble. 
B)  polar and water-soluble. 
C)  nonpolar and water -insoluble. 
D)  nonpolar and water-soluble. 
A)  polar and water-insoluble. 
B)  polar and water-soluble. 
C)  nonpolar and water -insoluble. 
D)  nonpolar and water-soluble.

Question 14

Glycogen is the

Accepted Answer

A)  storage carbohydrate in animals. 
B)  storage carbohydrate in plants. 
C)  nondigestible plant polysaccharide. 
D)  major nutrient for most body cells. 
E)  sugar found in RNA. 
A)  storage carbohydrate in animals. 
B)  storage carbohydrate in plants. 
C)  nondigestible plant polysaccharide. 
D)  major nutrient for most body cells. 
E)  sugar found in RNA.

Question 15

Which of the following pairs is mismatched?

Accepted Answer

A)  synthesis reaction - two reactants combine to form a larger product 
B)  decomposition reaction - large reactant broken into smaller products 
C)  oxidation - gain of electrons 
D)  dehydration reaction - water is a product of the reaction 
E)  hydrolysis - water is used in decomposition reaction 
A)  synthesis reaction - two reactants combine to form a larger product 
B)  decomposition reaction - large reactant broken into smaller products 
C)  oxidation - gain of electrons 
D)  dehydration reaction - water is a product of the reaction 
E)  hydrolysis - water is used in decomposition reaction

Exam 2: The Chemical Basis of Life

-Water accounts for 50% of the weight of a young adult female and 60% of a young adult male. What kind of atom is found at "D"?

Which of the following is an organic compound?

Chemical energy

Which of the following means a change in shape of a protein?

Molecules that form when electrons are shared unequally between atoms are called

Large carbohydrates are formed from smaller units called

The minimum amount of energy that reactants must have to start a chemical reaction is called

The element uranium has a mass number of 238 and contains 92 protons. How many neutrons does an atom of uranium have?

In ionic bonding,

Energy

Solution A increases its acidity. This means that the

Which of the following factors will influence the rate of chemical reactions?

Phospholipids have a hydrophilic end which is

Glycogen is the

Which of the following pairs is mismatched?

The Human Organism

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Temperature Regulation

Urinary System

Water, Electrolytes, and Acidbase Balance

Reproductive System

Development, Growth, Aging, and Genetics

Filters