Question 1

From the following list, select the one organic substance found in the human body.

Accepted Answer

A)   Oxygen
B)   Water
C)   Glucose
D)   CalciumE) A) and D)
F) A) and C)

Question 2

Which of the following statements correctly describes ATP?

Accepted Answer

A)   Can be synthesized from ADP
B)   Stores and releases energy in the cell
C)   Is associated with a reversible reaction
D)   Is associated with anabolism and catabolism
E)   All of the choices are correct.F) C) and E)
G) A) and C)

Question 3

Molecules that form when electrons are shared unequally between atoms are called ________ molecules.

Accepted Answer

A)   salt
B)   polar
C)   nonpolar
D)   lopsided
E)   None of the choices are correct.F) A) and D)
G) A) and E)

Question 4

The energy stored in ATP is a form of ________ energy.

Accepted Answer

A)   mechanical
B)   chemical
C)   kinetic
D)   heat
E)   electricalF) B) and D)
G) B) and C)

Question 5

Which of the following lists includes only monosaccharides that are isomers of one another?

Accepted Answer

A)   Glycogen, glucose, sucrose
B)   Starch, glycogen, cellulose
C)   Glucose, fructose, galactose
D)   Ribose, glycogen, glucose
E)   Deoxyribose, glycogen, starchF) B) and E)
G) A) and D)

Question 6

-The sodium chloride molecule breaks apart in water. What does "C" represent?

Accepted Answer

A)   Chloride ion
B)   Dissociation
C)   Water molecule
D)   Sodium ion
E)   Salt crystalF) C) and D)
G) B) and D)

Question 7

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) C) and D)
G) B) and D)

Question 8

Which of the following is the correct complementary strand to CATGTC?

Accepted Answer

A)   GTACAG
B)   CATGTC
C)   GUACAG
D)   AGCACA
E)   TCGTATF) A) and C)
G) C) and E)

Question 9

Intermolecular forces

Accepted Answer

A)   form dissociated ions.
B)   are electrostatic attractions between different molecules.
C)   evenly distribute electrical charge among all atoms in a sample.
D)   separate atoms and ions from one another.
E)   are found within molecules.F) None of the above
G) B) and D)

Question 10

A weak acid was introduced to a solution. Which of the following accurately describes the condition of the solution after adding the weak acid?

Accepted Answer

A)   The solution would have an increase in H+ with some of the weak acid molecules still intact.
B)   The solution would have a decrease in H+ with some of the weak acid molecules still intact.
C)   The solution would have an increase in H+ with none of the weak acid molecules still intact.
D)   The solution would have a decrease in H+ with none of the weak acid molecules still intact.E) A) and D)
F) A) and C)

Question 11

Considering the following analogy, determine which component represents ATP's role in the cells of the body. As the river flows past the old mill, it turns the water wheel, which in turns powers the movement of the millstone that grinds the wheat.

Accepted Answer

A)   Water wheel
B)   River
C)   Millstone
D)   WheatE) B) and C)
F) A) and D)

Question 12

Most enzymes are ________.

Accepted Answer

A)   cofactors
B)   proteins
C)   lipids
D)   carbohydrates
E)   nucleic acidsF) B) and C)
G) All of the above

Question 13

-The sodium chloride molecule breaks apart in water. What does "B" represent?

Accepted Answer

A)   Chloride ion
B)   Dissociation
C)   Water molecule
D)   Sodium ion
E)   Salt crystalF) B) and E)
G) B) and D)

Question 14

A research group is monitoring a series of reactions and have determined it is most likely a hydrolysis reaction because the number of ________.

Accepted Answer

A)   water molecules decreased
B)   water molecules increased
C)   oxygen molecules increased
D)   oxygen molecules decreasedE) None of the above
F) A) and B)

Question 15

Polysaccharides

Accepted Answer

A)   are formed when sucrose and glucose combine.
B)   are the smallest carbohydrates.
C)   contain carbon, hydrogen, and phosphate atoms.
D)   contain long chains of monosaccharides.
E)   are not found in plants.F) A) and E)
G) A) and B)

Question 16

A substance composed of two or more different types of atoms is a/an ________.

Accepted Answer

A)   compound
B)   element
C)   ion
D)   molecule
E)   Both compound and molecule are correct.F) All of the above
G) C) and D)

Question 17

The amount of matter in an object is its ________.

Accepted Answer

A)   mass
B)   weight
C)   atomic number
D)   element
E)   ionic chargeF) All of the above
G) B) and D)

Question 18

When the hydrogen bonds that maintain a protein's three-dimensional shape are broken, the protein becomes nonfunctional, and is said to be ________.

Accepted Answer

A)   essential
B)   denatured
C)   structural
D)   unsaturated
E)   saturatedF) B) and C)
G) C) and D)

Question 19

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 B)
G) None of the above

Question 20

Blood contains NaCl, protein, and cells. The NaCl is in a/an ________, the protein is in a/an ________, and the cells are in a ________.

Accepted Answer

A)   emulsion; solution; suspension
B)   solvent; emulsion; colloid
C)   colloid; suspension; solution
D)   suspension; colloid; solution
E)   solution; colloid; suspensionF) D) and E)
G) B) and E)

Exam 2: The Chemical Basis of Life

The amount of matter in an object is its ________.

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A weak acid was introduced to a solution. Which of the following accurately describes the condition of the solution after adding the weak acid?

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Which of the following pairs is mismatched?

Correct AnswerverifiedShow Answer

A research group is monitoring a series of reactions and have determined it is most likely a hydrolysis reaction because the number of ________.

Correct AnswerverifiedShow Answer

When the hydrogen bonds that maintain a protein's three-dimensional shape are broken, the protein becomes nonfunctional, and is said to be ________.

Correct AnswerverifiedShow Answer

Which of the following lists includes only monosaccharides that are isomers of one another?

Correct AnswerverifiedShow Answer

Intermolecular forces

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Which of the following is the correct complementary strand to CATGTC?

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Which of the following statements correctly describes ATP?

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Blood contains NaCl, protein, and cells. The NaCl is in a/an ________, the protein is in a/an ________, and the cells are in a ________.

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The energy stored in ATP is a form of ________ energy.

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Most enzymes are ________.

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-The sodium chloride molecule breaks apart in water. What does "C" represent?

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From the following list, select the one organic substance found in the human body.

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Chemical energy

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Molecules that form when electrons are shared unequally between atoms are called ________ molecules.

Correct AnswerverifiedShow Answer

Considering the following analogy, determine which component represents ATP's role in the cells of the body. As the river flows past the old mill, it turns the water wheel, which in turns powers the movement of the millstone that grinds the wheat.

Correct AnswerverifiedShow Answer

-The sodium chloride molecule breaks apart in water. What does "B" represent?

Correct AnswerverifiedShow Answer

Polysaccharides

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A substance composed of two or more different types of atoms is a/an ________.

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Blood contains NaCl, protein, and cells. The NaCl is in a/an , the protein is in a/an , and the cells are in a .

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