Question 1

Which of the following characteristics of water is most responsible for the sinking of the Titanic?

Accepted Answer

A)   Water is liquid at room temperature.
B)   Water has a high heat of vaporization.
C)   The temperature of liquid water rises and falls slowly.
D)   Frozen water is less dense than liquid water.
E)   Water molecules are cohesive.F) None of the above
G) B) and C)

Question 2

Which grouping of elements is found in carbohydrates?

Accepted Answer

A)   C - H - O
B)   C - H - P
C)   H - O - Cl
D)   N - S - O
E)   Ca - H - OF) A) and B)
G) C) and D)

Question 3

List the functions of proteins.

Accepted Answer

Functions of proteins include:
1.support...

Question 4

Ca3(PO4) 2 represents a(n)

Accepted Answer

A)   element.
B)   mixture.
C)   compound.
D)   isotope.
E)   atom.F) B) and E)
G) B) and D)

Question 5

Carbon dating is a common method employed in dating certain kinds of fossils.It is based on the radioactive decay of an isotope of carbon (C14) .Referring to the atomic number of carbon attained from the periodic table,how many neutrons does C14 have?

Accepted Answer

A)   2
B)   4
C)   8
D)   12
E)   14 F) D) and E)
G) B) and E)

Question 6

Which polysacccharide is stored as an energy source in the body of animals?

Accepted Answer

A)   glycogen
B)   glucose
C)   cellulose
D)   starch
E)   chitinF) B) and C)
G) A) and E)

Question 7

Which of the following is not one of the four classes of organic molecules found in cells?

Accepted Answer

A)   vitamins
B)   lipids
C)   proteins
D)   carbohydrates
E)   nucleic acidsF) A) and D)
G) A) and E)

Question 8

Which polysaccharide is branched the most?

Accepted Answer

A)   cellulose
B)   starch
C)   glycogen
D)   glucose
E)   fructoseF) A) and B)
G) A) and C)

Question 9

The atomic number of an atom is determined by the number of

Accepted Answer

A)   protons.
B)   neutrons.
C)   electrons.
D)   protons and neutrons.
E)   protons and electrons.F) A) and E)
G) C) and D)

Question 10

An alpha helix or a beta sheet are examples of what level of protein structure?

Accepted Answer

A)   secondary
B)   primary
C)   tertiary
D)   quaternary
E)   octagonF) B) and C)
G) None of the above

Question 11

What passes through the digestive tract as fiber or roughage?

Accepted Answer

A)   maltose
B)   glucose
C)   glycogen
D)   starch
E)   celluloseF) None of the above
G) C) and D)

Question 12

Our body is capable of converting starch into glycogen.

Accepted Answer

A) True 
 B)False

Question 13

The membranes of cells are composed primarily of

Accepted Answer

A)   phospholipids.
B)   fats.
C)   oils.
D)   steroids.
E)   triglycerides.F) A) and B)
G) C) and D)

Question 14

Which type of bond is responsible for holding two water molecules together,creating the properties of water?

Accepted Answer

A)   hydrogen
B)   covalent
C)   ionic
D)   polar
E)   double covalentF) A) and B)
G) D) and E)

Question 15

Which of the following nitrogenous bases is not found in DNA?

Accepted Answer

A)   cytosine
B)   thymine
C)   uracil
D)   guanine
E)   adenineF) C) and E)
G) B) and D)

Question 16

Joining small molecules (monomers) together to form longer chains (polymers) requires a process called

Accepted Answer

A)   a hydrolysis reaction.
B)   a dehydration reaction.
C)   monomerization.
D)   emulsification.
E)   disassembly.F) A) and E)
G) D) and E)

Question 17

A fatty acid that contains only single bonds between the carbon atoms is considered

Accepted Answer

A)   saturated.
B)   unsaturated.
C)   trans unsaturated.
D)   a cholestrol.
E)   a steroid.F) C) and D)
G) A) and B)

Question 18

Fats are usually of animal origin,while oils are usually of plant origin.

Accepted Answer

A) True 
 B)False

Question 19

The function of RNA in the body is to store the genetic information in the nucleus.

Accepted Answer

A) True 
 B)False

Question 20

Fats and oils function better than other biological molecules as energy-storage molecules because of the carbon they contain.

Accepted Answer

A) True 
 B)False

Exam 2: Chemistry of Life

Which of the following nitrogenous bases is not found in DNA?

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Our body is capable of converting starch into glycogen.

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Which type of bond is responsible for holding two water molecules together,creating the properties of water?

Correct AnswerverifiedShow Answer

The function of RNA in the body is to store the genetic information in the nucleus.

Correct AnswerverifiedShow Answer

Carbon dating is a common method employed in dating certain kinds of fossils.It is based on the radioactive decay of an isotope of carbon (C14) .Referring to the atomic number of carbon attained from the periodic table,how many neutrons does C14 have?

Correct AnswerverifiedShow Answer

Fats and oils function better than other biological molecules as energy-storage molecules because of the carbon they contain.

Correct AnswerverifiedShow Answer

An alpha helix or a beta sheet are examples of what level of protein structure?

Correct AnswerverifiedShow Answer

A fatty acid that contains only single bonds between the carbon atoms is considered

Correct AnswerverifiedShow Answer

Fats are usually of animal origin,while oils are usually of plant origin.

Correct AnswerverifiedShow Answer

Which of the following characteristics of water is most responsible for the sinking of the Titanic?

Correct AnswerverifiedShow Answer

What passes through the digestive tract as fiber or roughage?

Correct AnswerverifiedShow Answer

The membranes of cells are composed primarily of

Correct AnswerverifiedShow Answer

Which grouping of elements is found in carbohydrates?

Correct AnswerverifiedShow Answer

The atomic number of an atom is determined by the number of

Correct AnswerverifiedShow Answer

Joining small molecules (monomers) together to form longer chains (polymers) requires a process called

Correct AnswerverifiedShow Answer

Ca3(PO4) 2 represents a(n)

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Which of the following is not one of the four classes of organic molecules found in cells?

Correct AnswerverifiedShow Answer

Which polysaccharide is branched the most?

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Which polysacccharide is stored as an energy source in the body of animals?

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List the functions of proteins.

Correct AnswerverifiedFunctions of proteins include:1.support...View AnswerShow Answer

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Carbon dating is a common method employed in dating certain kinds of fossils.It is based on the radioactive decay of an isotope of carbon (C¹⁴) .Referring to the atomic number of carbon attained from the periodic table,how many neutrons does C¹⁴ have?

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Ca₃(PO₄) ₂ represents a(n)

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Functions of proteins include:
1.support...
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