Question 1

-____ are long-chain fatty acids attached to long-chain alcohols.

Accepted Answer

A)   Triglycerides
B)   Phospholipids
C)   Sterols
D)   Waxes
E)   Most neutral fats

Question 2

Classification.The following are chemical functional groups that may be part of a biologically active molecule.Answer the questions by matching the items with the most appropriate group.
a.-COOH
b.-CHS1U1B13S1U1B0
c.-NHS1U1B12S1U1B0
d.-OH
e.  
f.-POS1U1B14S1U1B0S1U1P13S1S1P0S1U1P1-S1S1P0
g.-CHO
-the carboxyl group

Accepted Answer

The answer of Classification.The following are chemical functional groups that...

Question 3

How are cellulose and starch similar and how do they differ?

Accepted Answer

Both cellulose and starch are complex ca...

Question 4

-Fructose and glucose are

Accepted Answer

A)   isotopes.
B)   monosaccharides.
C)   disaccharides.
D)   six-carbon sugars.
E)   both monosaccharides and six-carbon sugars.

Question 5

-What kind of reaction produces large molecules by linking small molecules?

Accepted Answer

A)   oxidation
B)   reduction
C)   condensation
D)   hydrolysis
E)   decarboxylation

Question 6

Denaturation of proteins may result in all of the following EXCEPT

Accepted Answer

A)   breakage of hydrogen bonds.
B)   loss of three-dimensional structure.
C)   removal of R groups from amino acids.
D)   alteration of enzyme activity.
E)   endangerment of a cell's life.

Question 7

Classification.The following are chemical functional groups that may be part of a biologically active molecule.Answer the questions by matching the items with the most appropriate group.
a.-COOH
b.-CHS1U1B13S1U1B0
c.-NHS1U1B12S1U1B0
d.-OH
e.  
f.-POS1U1B14S1U1B0S1U1P13S1S1P0S1U1P1-S1S1P0
g.-CHO
-the group on the carboxyl-terminal end of proteins

Accepted Answer

The answer of Classification.The following are chemical functional groups that...

Question 8

An -NH2 group is a(n)  ____ group.

Accepted Answer

A)   carboxyl
B)   hydroxyl
C)   amine
D)   methyl
E)   carbonyl

Question 9

Amino acids are linked by what kind of bonds to form the primary structure of a protein?

Accepted Answer

A)   disulfide
B)   hydrogen
C)   ionic
D)   peptide
E)   none of these

Question 10

MATCHING
Matching.Choose the one most appropriate item from its description.
a.a six-carbon sugar
b.found in DNA and RNA
c.principal components of cell membranes
d.affect metabolic reaction rates
-nucleotide

Accepted Answer

The answer of MATCHING
Matching.Choose the one most appropriate item from...

Question 11

-Monosaccharides may be characterized by all EXCEPT which of the following?

Accepted Answer

A)   a ketone group
B)   carbon, hydrogen, and oxygen in a 1:2:1 ratio
C)   a backbone of five to six carbon atoms
D)   one carbonyl group
E)   the presence of glycerol and fatty acids

Question 12

Nucleotides contain what kind of sugars?

Accepted Answer

A)   three-carbon
B)   four-carbon
C)   five-carbon
D)   six-carbon
E)   seven-carbon

Question 13

A denatured protein has lost its __________.

Accepted Answer

The answer of A denatured protein has lost its __________....

Question 14

Which molecule is incorrectly matched with its monomer?

Accepted Answer

A)   fat; fatty acid
B)   starch; ribose
C)   protein; amino acid
D)   glycogen; glucose
E)   nucleic acids; nucleotide

Question 15

-Oligosaccharides include

Accepted Answer

A)   sucrose.
B)   glucose.
C)   fructose.
D)   lactose
E)   both sucrose and lactose.

Question 16

Fats are major constituents of

Accepted Answer

A)   proteins.
B)   genes.
C)   photosynthesis.
D)   cell membranes.
E)   all of these.

Question 17

A single atom of carbon may form up to ____ covalent bonds with other atoms.

Accepted Answer

A)   2
B)   3
C)   4
D)   5
E)   6

Question 18

Typical fat molecules have ____ chain(s) .

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   5

Question 19

In biology, many complementary processes exist.Explain how condensation reactions are complementary to hydrolysis reactions.

Accepted Answer

In condensation reactions, a hydroxyl io...

Question 20

Explain why vigorous exercise in warm weather could be hazardous to your enzymes?

Accepted Answer

For enzymes, a class of proteins, to fun...

Exam 3: Molecules of Life

An -NH2 group is a(n) ____ group.

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Which molecule is incorrectly matched with its monomer?

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Denaturation of proteins may result in all of the following EXCEPT

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Fats are major constituents of

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Classification.The following are chemical functional groups that may be part of a biologically active molecule.Answer the questions by matching the items with the most appropriate group. a.-COOH b.-CH3 c.-NH2 d.-OH e. f.-PO43- g.-CHO -the carboxyl group

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MATCHING Matching.Choose the one most appropriate item from its description. a.a six-carbon sugar b.found in DNA and RNA c.principal components of cell membranes d.affect metabolic reaction rates -nucleotide

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-What kind of reaction produces large molecules by linking small molecules?

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Explain why vigorous exercise in warm weather could be hazardous to your enzymes?

Correct AnswerverifiedFor enzymes, a class of proteins, to fun...View AnswerShow Answer

A denatured protein has lost its __________.

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Nucleotides contain what kind of sugars?

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Classification.The following are chemical functional groups that may be part of a biologically active molecule.Answer the questions by matching the items with the most appropriate group. a.-COOH b.-CH3 c.-NH2 d.-OH e. f.-PO43- g.-CHO -the group on the carboxyl-terminal end of proteins

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Amino acids are linked by what kind of bonds to form the primary structure of a protein?

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-Monosaccharides may be characterized by all EXCEPT which of the following?

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A single atom of carbon may form up to ____ covalent bonds with other atoms.

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In biology, many complementary processes exist.Explain how condensation reactions are complementary to hydrolysis reactions.

Correct AnswerverifiedIn condensation reactions, a hydroxyl io...View AnswerShow Answer

How are cellulose and starch similar and how do they differ?

Correct AnswerverifiedBoth cellulose and starch are complex ca...View AnswerShow Answer

-____ are long-chain fatty acids attached to long-chain alcohols.

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-Oligosaccharides include

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Typical fat molecules have ____ chain(s) .

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-Fructose and glucose are

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An -NH₂group is a(n) ____ group.

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Classification.The following are chemical functional groups that may be part of a biologically active molecule.Answer the questions by matching the items with the most appropriate group. a.-COOH b.-CH₃ c.-NH₂ d.-OH e. f.-PO₄³^- g.-CHO -the carboxyl group

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For enzymes, a class of proteins, to fun...
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Classification.The following are chemical functional groups that may be part of a biologically active molecule.Answer the questions by matching the items with the most appropriate group. a.-COOH b.-CH₃ c.-NH₂ d.-OH e. f.-PO₄³^- g.-CHO -the group on the carboxyl-terminal end of proteins

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In condensation reactions, a hydroxyl io...
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Both cellulose and starch are complex ca...
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