Question 1

What makes each amino acid unique?

Accepted Answer

A)   the central carbon
B)   the R group
C)   the amino group
D)   the carboxyl group
E)   the carbon ringF) A) and B)
G) A) and C)

Question 2

What passes through the digestive tract as fiber or roughage?

Accepted Answer

A)   maltose
B)   glucose
C)   glycogen
D)   starch
E)   celluloseF) B) and E)
G) D) and E)

Question 3

On a warm day in April, Tina jumped into the swimming pool. To her surprise the water was really cold. Which property of water did she discover?

Accepted Answer

A)   Water molecules are cohesive.
B)   The temperature of liquid water rises and falls slowly.
C)   Water possesses hydrogen bonds.
D)   Water is a polar molecule.
E)   Frozen water is less dense than liquid water.F) C) and D)
G) C) and E)

Question 4

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

Question 5

The monomer unit of a protein is

Accepted Answer

A)   fatty acids.
B)   amino acids.
C)   monosaccharides.
D)   polysaccharides.
E)   nucleic acids.F) B) and C)
G) A) and D)

Question 6

Water makes up 60-70% of total body weight.

Accepted Answer

A) True 
 B)False

Question 7

A hydrolysis reaction involves the loss of water.

Accepted Answer

A) True 
 B)False

Question 8

Why does a protein not function after it has been denatured?

Accepted Answer

A)   The normal bonding between the R groups has been disturbed and the protein loses its normal shape.
B)   The normal bonding between the beta sheets has been disturbed and the protein loses its normal shape.
C)   The normal bonding between the hydrogens in the alpha helix has been disturbed and the protein loses its normal shape.
D)   The R groups form additional bonds causing the structure to become more compact.
E)   The normal peptide bonds are ruptured and the individual amino acids are not held together any more.F) A) and B)
G) C) and D)

Question 9

Why is He positioned above Ne in the periodic table?

Accepted Answer

A)   They both have the same atomic mass.
B)   They both have the same number of electrons in their outermost orbital.
C)   They both have a full outermost orbital.
D)   They both have the same atomic number.
E)   They both have the same number of protons in their nuclei.F) None of the above
G) B) and D)

Question 10

The main function of carbohydrates is for long-term energy storage.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following elements will have more than two electrons and have a full outer orbital?

Accepted Answer

A)   He
B)   Ne
C)   C
D)   N
E)   OF) B) and C)
G) A) and D)

Question 12

Describe the structure and function of the DNA molecule.

Accepted Answer

DNA is composed of a phosphate group, ni...

Question 13

A solution with a pH of 7 has 10 times as many H+ as a pH of 6.

Accepted Answer

A) True 
 B)False

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

Question 15

Which of the following is not a function of proteins?

Accepted Answer

A)   quick energy
B)   support
C)   transport
D)   enzymes
E)   motionF) B) and C)
G) A) and E)

Question 16

William noticed water mysteriously climbing up a capillary tube. This is an example of which property of water?

Accepted Answer

A)   Frozen water is less dense than liquid water.
B)   The temperature of liquid water rises and falls slowly.
C)   Water molecules are cohesive.
D)   Water has a high heat of vaporization.
E)   Water is a solvent.F) B) and E)
G) B) and D)

Question 17

The sides of the DNA ladder backbone)  are

Accepted Answer

A)   alternating carbons and nitrogens.
B)   the R groups.
C)   the nitrogenous bases.
D)   alternating nitrogens and phosphates.
E)   sugars and phosphates.F) A) and D)
G) D) and E)

Question 18

Two or more atoms joined together through the sharing of electrons are called an)

Accepted Answer

A)   atomic unit.
B)   molecule.
C)   compound.
D)   isotope.
E)   ion.F) None of the above
G) B) and E)

Question 19

Starch, cellulose, and glycogen are alike in that they

Accepted Answer

A)   are all made of glucose.
B)   contain the same number of side chains.
C)   have the same types of bonds between the monomer units.
D)   are all found in animals.
E)   can all be digested by our bodies.F) C) and D)
G) A) and E)

Question 20

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 D)
G) All of the above

Exam 2: Chemistery of Life

What makes each amino acid unique?

Correct AnswerverifiedShow Answer

Describe the structure and function of the DNA molecule.

Correct AnswerverifiedDNA is composed of a phosphate group, ni...View AnswerShow Answer

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

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

Two or more atoms joined together through the sharing of electrons are called an)

Correct AnswerverifiedShow Answer

The monomer unit of a protein is

Correct AnswerverifiedShow Answer

A hydrolysis reaction involves the loss of water.

Correct AnswerverifiedShow Answer

Water makes up 60-70% of total body weight.

Correct AnswerverifiedShow Answer

Which of the following elements will have more than two electrons and have a full outer orbital?

Correct AnswerverifiedShow Answer

A solution with a pH of 7 has 10 times as many H+ as a pH of 6.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Starch, cellulose, and glycogen are alike in that they

Correct AnswerverifiedShow Answer

Why does a protein not function after it has been denatured?

Correct AnswerverifiedShow Answer

William noticed water mysteriously climbing up a capillary tube. This is an example of which property of water?

Correct AnswerverifiedShow Answer

The main function of carbohydrates is for long-term energy storage.

Correct AnswerverifiedShow Answer

What passes through the digestive tract as fiber or roughage?

Correct AnswerverifiedShow Answer

Why is He positioned above Ne in the periodic table?

Correct AnswerverifiedShow Answer

The sides of the DNA ladder backbone) are

Correct AnswerverifiedShow Answer

On a warm day in April, Tina jumped into the swimming pool. To her surprise the water was really cold. Which property of water did she discover?

Correct AnswerverifiedShow Answer

Which of the following is not a function of proteins?

Correct AnswerverifiedShow Answer

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DNA is composed of a phosphate group, ni...
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A solution with a pH of 7 has 10 times as many H⁺ as a pH of 6.

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