Question 1

Which of the following functional groups is the hydroxyl group?

Accepted Answer

A)   -NH2
B)   -PO4
C)   -COOH
D)   -SH
E)   -OHF) B) and D)
G) None of the above

Question 2

During ionization, water molecules disrupt the ionic bonds of a salt to produce a mixture of ions. Theseions can carry a current and so are called

Accepted Answer

A)   cations.
B)   anions.
C)   acids.
D)   electrolytes.
E)   counterions.F) None of the above
G) B) and C)

Question 3

Identify the product formed from the phosphorylation of ADP.

Accepted Answer

A)   adenosine diphosphate
B)   adenine
C)   adenosine triphosphate
D)   deoxyribonucleic acid
E)   riboseF) All of the above
G) A) and D)

Question 4

In-Text Figure Based Questions
-How many electrons can the second energy level hold when it is completely filled? (Figure 2-3)

Accepted Answer

A)   2
B)   4
C)   6
D)   8
E)   10F) A) and E)
G) B) and D)

Question 5

The ________ of a radioactive substance is the time required for 50 percent of a given amount of radioisotope to decay.

Accepted Answer

A)   decay-point
B)   mid-life
C)   deterioration point
D)   half-life
E)   entropyF) A) and C)
G) C) and E)

Question 6

Which property of water helps keeps body temperature stabilized?

Accepted Answer

A)   kinetic energy
B)   lubrication
C)   surface tension
D)   reactivity
E)   thermal inertiaF) A) and E)
G) None of the above

Question 7

In-Text Figure Based Questions
-What type of bond does an unsaturated fatty acid contain that a saturated fatty acid does not? (Figure 2-15)

Accepted Answer

A)   at least 4 single covalent bonds
B)   at least one double covalent bond
C)   an ionic bond
D)   a hydrogen bond
E)   at least one triple covalent bondF) C) and D)
G) A) and D)

Question 8

Electrons whirl around the center of the atom at high speed, forming a(n)

Accepted Answer

A)   spiral.
B)   figure 8.
C)   cylinder.
D)   electron cloud.
E)   helix.F) All of the above
G) C) and D)

Question 9

The reaction H2CO3 ? H+ + HCO3 is what type of reaction?

Accepted Answer

A)   decomposition
B)   exchange
C)   hydrolysis
D)   synthesis
E)   reversibleF) C) and D)
G) B) and E)

Question 10

When atoms complete their outer electron shell by sharing electrons, they form

Accepted Answer

A)   ionic bonds.
B)   covalent bonds.
C)   hydrogen bonds.
D)   anions.
E)   cations.F) B) and E)
G) B) and D)

Question 11

A shortage of steroids in the body would result in a shortage of

Accepted Answer

A)   sex hormones.
B)   proteins.
C)   plasma membranes.
D)   glycogen.
E)   sex hormones and plasma membranes.F) C) and D)
G) B) and D)

Question 12

Compounds that contain carbon as the primary structural atom are called ________ molecules.

Accepted Answer

A)   carbonic
B)   organic
C)   inorganic
D)   catabolic
E)   anabolicF) A) and C)
G) C) and E)

Question 13

The actual mass of an atom is known as its

Accepted Answer

A)   chemical weight.
B)   atomic weight.
C)   atomic mass.
D)   chemical mass.
E)   chemical force.F) B) and C)
G) B) and D)

Question 14

What is the [H+] in pure water?

Accepted Answer

A)   1X10-7 mol/L
B)   1X10-14 mol/L
C)   7 mol/L
D)   1X107 mol/L
E)   1X1014 mol/LF) C) and D)
G) A) and D)

Question 15

Of the following choices, the pH of the least acidic solution is

Accepted Answer

A)   6.0.
B)   4.5.
C)   2.3.
D)   1.0.
E)   12.0.F) All of the above
G) C) and E)

Question 16

In water, phospholipids tend to form tiny droplets with hydrophobic tails buried inside called

Accepted Answer

A)   micelles.
B)   chylomicrons.
C)   glycocalyces.
D)   eicosanoids.
E)   hydroceles.F) A) and C)
G) D) and E)

Question 17

Magnesium atoms have two electrons in the outermost shell. As a result, you would expect magnesium to formions with a charge of

Accepted Answer

A)   +1.
B)   +2.
C)   -1.
D)   -2.
E)   either +2 or -2.F) A) and B)
G) A) and C)

Question 18

Sodium (NA)  has an atomic number of 11. How many electrons are in the outer electron shell of a neutralsodium atom?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   8F) A) and B)
G) D) and E)

Question 19

Which of the following statements about hydrogen bonds is false?

Accepted Answer

A)   Hydrogen bonds are strong attractive forces between hydrogen atoms and negatively charged atoms.
B)   Hydrogen bonds can occur within a single molecule.
C)   Hydrogen bonds can form between neighboring molecules.
D)   Hydrogen bonds are important for holding large molecules together.
E)   Hydrogen bonds are responsible for many of the properties of water.F) B) and D)
G) C) and E)

Question 20

An amino acid is to a protein as a ________ is to a nucleic acid.

Accepted Answer

A)   purine
B)   nucleotide
C)   protein
D)   proton
E)   neutronF) A) and B)
G) A) and E)

Exam 2: The Chemical Level of Organization

The actual mass of an atom is known as its

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The ________ of a radioactive substance is the time required for 50 percent of a given amount of radioisotope to decay.

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During ionization, water molecules disrupt the ionic bonds of a salt to produce a mixture of ions. Theseions can carry a current and so are called

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A shortage of steroids in the body would result in a shortage of

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Identify the product formed from the phosphorylation of ADP.

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In-Text Figure Based Questions -What type of bond does an unsaturated fatty acid contain that a saturated fatty acid does not? (Figure 2-15)

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Compounds that contain carbon as the primary structural atom are called ________ molecules.

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Which of the following statements about hydrogen bonds is false?

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In-Text Figure Based Questions -How many electrons can the second energy level hold when it is completely filled? (Figure 2-3)

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In water, phospholipids tend to form tiny droplets with hydrophobic tails buried inside called

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What is the [H+] in pure water?

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Which of the following functional groups is the hydroxyl group?

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Electrons whirl around the center of the atom at high speed, forming a(n)

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Which property of water helps keeps body temperature stabilized?

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When atoms complete their outer electron shell by sharing electrons, they form

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An amino acid is to a protein as a ________ is to a nucleic acid.

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Magnesium atoms have two electrons in the outermost shell. As a result, you would expect magnesium to formions with a charge of

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Sodium (NA) has an atomic number of 11. How many electrons are in the outer electron shell of a neutralsodium atom?

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Of the following choices, the pH of the least acidic solution is

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The reaction H2CO3 ? H+ + HCO3 is what type of reaction?

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