Question 1

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) A) and E)

Question 2

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) B) and C)
G) A) and B)

Question 3

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 B)
G) None of the above

Question 4

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 E)
G) A) and B)

Question 5

Identify the product formed from the phosphorylation of ADP.

Accepted Answer

A)   adenosine diphosphate
B)   adenine
C)   adenosine triphosphate
D)   deoxyribonucleic acid
E)   riboseF) B) and E)
G) A) and B)

Question 6

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

Question 7

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) A) and B)
G) A) and C)

Question 8

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) None of the above
G) A) and B)

Question 9

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) A) and B)
G) A) 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) A) and B)
G) B) and D)

Question 11

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

Question 12

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

Question 13

Which of the following functional groups is the hydroxyl group?

Accepted Answer

A)   -NH2
B)   -PO4
C)   -COOH
D)   -SH
E)   -OHF) A) and E)
G) D) and E)

Question 14

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) B) and E)
G) B) and D)

Question 15

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

Question 16

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 C)
G) C) and E)

Question 17

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) A) and C)
G) A) and B)

Question 18

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 E)
G) B) and E)

Question 19

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) A) and B)
G) C) and E)

Question 20

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) B) and D)
G) A) and D)

Exam 2: The Chemical Level of Organization

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

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

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What is the [H+] in pure water?

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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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Which property of water helps keeps body temperature stabilized?

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Which of the following statements about hydrogen bonds is false?

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

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Identify the product formed from the phosphorylation of ADP.

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

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Which of the following functional groups is the hydroxyl group?

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

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

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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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The actual mass of an atom is known as its

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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