Question 1

Which of the following are polysaccharides?

Accepted Answer

A)  sucrose and glucose
B)  fructose and deoxyribose
C)  DNA and RNA
D)  starch and glycogenE) B) and C)
F) A) and C)

Question 2

Which of the following contains both a carboxyl group and an amino group?

Accepted Answer

A)  carbohydrates
B)  nucleotides
C)  amino acids
D)  lipidsE) A) and D)
F) All of the above

Question 3

Which of the following is an example of a lipid?

Accepted Answer

A)  cholesterol
B)  cellulose
C)  keratin
D)  chitinE) B) and C)
F) A) and D)

Question 4

Most enzymes are proteins,but not all proteins are enzymes.

Accepted Answer

A) True 
 B)False  True

Question 5

All hormones are steroids.

Accepted Answer

A) True 
 B)False

Question 6

Keratin is an example of a ________ protein.

Accepted Answer

The answer of Keratin is an example of a ________...

Question 7

The monomers of polysaccharides are:

Accepted Answer

A)  amino acids.
B)  nucleotides.
C)  steroids.
D)  lipids.
E)  sugars.F) B) and E)
G) All of the above

Question 8

Nucleotides are the building blocks for:

Accepted Answer

A)  disaccharides.
B)  ATP, DNA, and RNA.
C)  proteins.
D)  lipids.
E)  steroids.F) All of the above
G) D) and E)

Question 9

The active site of an enzyme is a product of its ________.

Accepted Answer

three-dime...

Question 10

Refer to the figure below, and then answer the question that follows.
 
-Explain why you will always find an amino group at one end of a polypeptide chain and a carboxyl group at the other end.

Accepted Answer

The first amino acid will have an amino ...

Question 11

The difference between one amino acid and another is the:

Accepted Answer

A)  number of amino and carboxyl groups each contains.
B)  number of R groups each contains.
C)  type of R group each contains.
D)  way their amino groups bond with carboxyl groups.
E)  difference in the chemical properties of their amino and carboxyl groups.F) A) and E)
G) B) and D) C

Question 12

Many features of a protein change when it is moved into an environment with a different pH.Which of the following features would stay the same?

Accepted Answer

A)  function of the protein
B)  shape of the protein
C)  binding properties of the protein
D)  amino acid sequence of the protein
E)  tertiary structure of the proteinF) B) and E)
G) None of the above

Question 13

Lipids with carbon-carbon double bonds tend to be more solid at room temperature.

Accepted Answer

A) True 
 B)False

Question 14

Unique chemical groups that confer special properties to an organic molecule are called:

Accepted Answer

A)  monomers.
B)  amino acids.
C)  functional groups.
D)  lipids.E) A) and D)
F) A) and B)

Question 15

Every protein has a unique shape and function because:

Accepted Answer

A)  each protein has a unique sequence of nucleotides.
B)  each protein has a unique sequence of amino acids.
C)  the bonds between the amino acids vary from protein to protein.
D)  the number of nitrogen atoms in each amino acid differs.E) B) and C)
F) C) and D)

Question 16

Sugar is an organic molecule because it contains:

Accepted Answer

A)  carbon and nitrogen.
B)  carbon.
C)  water.
D)  carbon dioxide.
E)  carbon and oxygen.F) B) and D)
G) C) and E) B

Question 17

A series of amino acids linked in linear fashion is called a ________.

Accepted Answer

The answer of A series of amino acids linked in...

Question 18

Which of the following is a polymer?

Accepted Answer

A)  fat
B)  steroid
C)  nucleic acid
D)  waxE) A) and C)
F) A) and B)

Question 19

The precursor from which steroid hormones are made is ________.

Accepted Answer

The answer of The precursor from which steroid hormones are...

Question 20

What do wax and testosterone have in common?

Accepted Answer

A)  They are both hormones.
B)  They are both proteins.
C)  They are both steroids.
D)  They are both lipids.E) B) and D)
F) B) and C)

Exam 3: Lifes Components: Biological Molecules

Which of the following are polysaccharides?

Correct AnswerverifiedShow Answer

Which of the following contains both a carboxyl group and an amino group?

Correct AnswerverifiedShow Answer

Which of the following is an example of a lipid?

Correct AnswerverifiedShow Answer

Most enzymes are proteins,but not all proteins are enzymes.

Correct AnswerverifiedTrue

All hormones are steroids.

Correct AnswerverifiedShow Answer

Keratin is an example of a ________ protein.

Correct AnswerverifiedShow Answer

The monomers of polysaccharides are:

Correct AnswerverifiedShow Answer

Nucleotides are the building blocks for:

Correct AnswerverifiedShow Answer

The active site of an enzyme is a product of its ________.

Correct Answerverifiedthree-dime...View AnswerShow Answer

Refer to the figure below, and then answer the question that follows. -Explain why you will always find an amino group at one end of a polypeptide chain and a carboxyl group at the other end.

Correct AnswerverifiedThe first amino acid will have an amino ...View AnswerShow Answer

The difference between one amino acid and another is the:

Correct AnswerverifiedC

Many features of a protein change when it is moved into an environment with a different pH.Which of the following features would stay the same?

Correct AnswerverifiedShow Answer

Lipids with carbon-carbon double bonds tend to be more solid at room temperature.

Correct AnswerverifiedShow Answer

Unique chemical groups that confer special properties to an organic molecule are called:

Correct AnswerverifiedShow Answer

Every protein has a unique shape and function because:

Correct AnswerverifiedShow Answer

Sugar is an organic molecule because it contains:

Correct AnswerverifiedB

A series of amino acids linked in linear fashion is called a ________.

Correct AnswerverifiedShow Answer

Which of the following is a polymer?

Correct AnswerverifiedShow Answer

The precursor from which steroid hormones are made is ________.

Correct AnswerverifiedShow Answer

What do wax and testosterone have in common?

Correct AnswerverifiedShow Answer

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True

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three-dime...
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The first amino acid will have an amino ...
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C

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B

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