Question 1

Imagine that you are in a study session,and your group is taking a practice quiz that members grade for one another.For the question,"A cook decides to cook only using monomers,so what chemicals could the cook use?" you would mark correct if the paper you are grading has the answer as

Accepted Answer

A)   cellulose and sucrose.
B)   lactose and sucrose.
C)   glucose and fructose.
D)   glucose and cellulose.
E)   None of the answers are correct.F) B) and D)
G) C) and E)

Question 2

A friend who is not taking your Biology course fills a cup with ice and then a drink.The friend asks you why the ice in the cup is floating,and you are able to say that

Accepted Answer

A)   the molecules are closer together in ice than in liquid water.
B)   the molecules are farther apart in ice than in liquid water.
C)   ice is denser than liquid water.
D)   convection currents caused by temperature differences push upwards on the ice.
E)   water vapor is less dense than liquid water.F) B) and D)
G) All of the above

Question 3

Carbon is a compound.

Accepted Answer

A) True 
 B)False

Question 4

As part of a lab exam,you are given a vial of orange crystals.When you add them to pure,neutral pH water,the pH changes to 13.Other tests show that the crystals consist of a single chemical.You could conclude the chemical is

Accepted Answer

A)   a weak acid.
B)   a weak base.
C)   neutral.
D)   a strong acid.
E)   a strong base.F) A) and E)
G) B) and C)

Question 5

You are asked to help prepare a lab and need to label some beakers.In one,you are told,there are sugars polymerizing into a large polymer,so you prepare a label that mentions

Accepted Answer

A)   hydrolysis.
B)   reproduction.
C)   dehydration synthesis.
D)   translation.
E)   transcription.F) D) and E)
G) A) and D)

Question 6

The polymers with the most complex and diverse three-dimensional structures are

Accepted Answer

A)   saturated fats.
B)   unsaturated fats.
C)   proteins.
D)   waxes.
E)   carbohydrates.F) None of the above
G) B) and E)

Question 7

In a chemical equation

Accepted Answer

A)   the reactants are on the right of the yields arrow.
B)   reactants and products are on both sides of the yields arrow.
C)   the products are on the left of the yields arrow.
D)   the reactants are on the left of the yields arrow.
E)   the number of atoms of each element may differ on the two sides of the yields arrow.F) A) and B)
G) B) and D)

Question 8

If an atom exists in nature with a valence shell that is full,then it is

Accepted Answer

A)   highly reactive.
B)   chemically unstable.
C)   highly likely to combine with other atoms.
D)   found only in a gas form.
E)   inert.F) D) and E)
G) A) and B) E

Question 9

The four most abundant elements needed by the human body are carbon,hydrogen,oxygen,and nitrogen.Because these are needed in large amounts to support our cells,these are referred to as

Accepted Answer

A)   bulk elements.
B)   trace elements.
C)   isotopes.
D)   buffers.
E)   essential elements.F) C) and D)
G) A) and D)

Question 10

The four nitrogen bases found in RNA are

Accepted Answer

A)   adenine, thymine, guanine, and uracil.
B)   adenine, cytosine, guanine, and uracil.
C)   adenine, thymine, cytosine, and uracil.
D)   thymine, cytosine, guanine, and uracil.
E)   None of the answer choices is correct.F) B) and E)
G) C) and E)

Question 11

What is an example of matter?

Accepted Answer

A)   oxygen gas
B)   energy
C)   light
D)   heat
E)   None of the answers are correct.F) A) and E)
G) A) and D)

Question 12

Proteins are compounds because they are polymers.

Accepted Answer

A) True 
 B)False

Question 13

The most abundant bulk elements that make up the vast majority of living organisms are

Accepted Answer

A)   carbon, hydrogen, oxygen, and calcium.
B)   carbon, oxygen, iron, and chlorine.
C)   carbon, hydrogen, iron, and calcium.
D)   carbon, hydrogen, oxygen, and nitrogen.
E)   carbon, oxygen, sulfur, and calcium.F) A) and D)
G) A) and C)

Question 14

In the experiment investigating tawny crazy ants and fire ants,the control group included

Accepted Answer

A)   tawny crazy ants with open venom glands.
B)   tawny crazy ants with plugged venom glands.
C)   fire ants with open venom glands.
D)   fire ants with plugged venom glands.E) A) and D)
F) A) and B)

Question 15

If a covalent bond is polar

Accepted Answer

A)   electrons are not shared by atoms.
B)   protons are shared by atoms.
C)   it will not form in living organisms.
D)   the electronegativity of atoms is unequal in their pull on electrons.
E)   the bond is weak in strength.F) B) and E)
G) C) and D)

Question 16

Polymers are made of monomers,and both are kinds of compounds.

Accepted Answer

A) True 
 B)False

Question 17

Water is a compound.

Accepted Answer

A) True 
 B)False

Question 18

An ionic bond is a bond in which

Accepted Answer

A)   atoms share electrons.
B)   atoms share protons.
C)   atoms of opposite charges attract each other.
D)   atoms share neutrons.
E)   atoms are repelled by each other.F) A) and B)
G) C) and E) C

Question 19

A substance with a pH of 2 is

Accepted Answer

A)   neutral.
B)   a weak acid.
C)   a weak base.
D)   a strong base.
E)   a strong acid.F) A) and B)
G) B) and D)

Question 20

Proteins store the genetic information of the cell and transmit it to the next generation.

Accepted Answer

A) True 
 B)False  False

Exam 2: The Chemistry of Life

Imagine that you are in a study session,and your group is taking a practice quiz that members grade for one another.For the question,"A cook decides to cook only using monomers,so what chemicals could the cook use?" you would mark correct if the paper you are grading has the answer as

Correct AnswerverifiedShow Answer

A friend who is not taking your Biology course fills a cup with ice and then a drink.The friend asks you why the ice in the cup is floating,and you are able to say that

Correct AnswerverifiedShow Answer

Carbon is a compound.

Correct AnswerverifiedShow Answer

As part of a lab exam,you are given a vial of orange crystals.When you add them to pure,neutral pH water,the pH changes to 13.Other tests show that the crystals consist of a single chemical.You could conclude the chemical is

Correct AnswerverifiedShow Answer

You are asked to help prepare a lab and need to label some beakers.In one,you are told,there are sugars polymerizing into a large polymer,so you prepare a label that mentions

Correct AnswerverifiedShow Answer

The polymers with the most complex and diverse three-dimensional structures are

Correct AnswerverifiedShow Answer

In a chemical equation

Correct AnswerverifiedShow Answer

If an atom exists in nature with a valence shell that is full,then it is

Correct AnswerverifiedE

The four most abundant elements needed by the human body are carbon,hydrogen,oxygen,and nitrogen.Because these are needed in large amounts to support our cells,these are referred to as

Correct AnswerverifiedShow Answer

The four nitrogen bases found in RNA are

Correct AnswerverifiedShow Answer

What is an example of matter?

Correct AnswerverifiedShow Answer

Proteins are compounds because they are polymers.

Correct AnswerverifiedShow Answer

The most abundant bulk elements that make up the vast majority of living organisms are

Correct AnswerverifiedShow Answer

In the experiment investigating tawny crazy ants and fire ants,the control group included

Correct AnswerverifiedShow Answer

If a covalent bond is polar

Correct AnswerverifiedShow Answer

Polymers are made of monomers,and both are kinds of compounds.

Correct AnswerverifiedShow Answer

Water is a compound.

Correct AnswerverifiedShow Answer

An ionic bond is a bond in which

Correct AnswerverifiedC

A substance with a pH of 2 is

Correct AnswerverifiedShow Answer

Proteins store the genetic information of the cell and transmit it to the next generation.

Correct AnswerverifiedFalse

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E

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C

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False