Question 1

Energy

Accepted Answer

A)   has mass.
B)   is the capacity to do work.
C)   has weight.
D)   takes up space.
E)   cannot be stored.F) A) and B)
G) All of the above

Question 2

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 reactionF) A) and D)
G) A) and C)

Question 3

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.E) A) and D)
F) A) and C)

Question 4

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.F) A) and B)
G) B) and D)

Question 5

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.F) None of the above
G) A) and E)

Question 6

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)   denaturationF) C) and D)
G) A) and B)

Question 7

Large carbohydrates are formed from smaller units called

Accepted Answer

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

Question 8

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.F) None of the above
G) B) and C)

Question 9

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.F) A) and C)
G) A) and E)

Question 10

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.F) D) and E)
G) C) and D)

Question 11

-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 bondF) D) and E)
G) A) and E)

Question 12

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 13

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.F) A) and B)
G) All of the above

Question 14

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.F) None of the above
G) C) and D)

Question 15

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.F) All of the above
G) A) and E)

Exam 2: The Chemical Basis of Life

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

Correct Answer
verified

Phospholipids have a hydrophilic end which is

Correct Answer
verified

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

Correct Answer
verified

-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"?

Correct Answer
verified

In ionic bonding,

Correct Answer
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Which of the following is an organic compound?

Correct Answer
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Solution A increases its acidity. This means that the

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

Correct Answer
verified

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

Correct Answer
verified

Glycogen is the

Correct Answer
verified

Large carbohydrates are formed from smaller units called

Correct Answer
verified

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

Correct Answer
verified

Chemical energy

Correct Answer
verified

Which of the following pairs is mismatched?

Correct Answer
verified

Energy

Correct Answer
verified

Exam 2: The Chemical Basis of Life

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

Correct AnswerverifiedShow Answer

Phospholipids have a hydrophilic end which is

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

-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"?

Correct AnswerverifiedShow Answer

In ionic bonding,

Correct AnswerverifiedShow Answer

Which of the following is an organic compound?

Correct AnswerverifiedShow Answer

Solution A increases its acidity. This means that the

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Glycogen is the

Correct AnswerverifiedShow Answer

Large carbohydrates are formed from smaller units called

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Chemical energy

Correct AnswerverifiedShow Answer

Which of the following pairs is mismatched?

Correct AnswerverifiedShow Answer

Energy

Correct AnswerverifiedShow Answer

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