Question 1

All steroids have ____.

Accepted Answer

A)   ​the same number of double bonds
B)   ​one or more fatty acids
C)   ​four rings of carbon to which other atoms are attached
D)   ​the same functional groups
E)   the same number and positions of double bonds​F) A) and B)
G) C) and D)

Question 2

Match the molecules below with their functions​
-main storage carbohydrate in plants

Accepted Answer

A)  ​glycogen
B)  ​cellulose
C)  ​starch
D)  ​phospholipid
E)  ​waxF) ​steroidG) ​cholesterolH) ​DNAI) ​RNAJ) A) and I)
K) B) and I)

Question 3

Choose the one most appropriate item from its description.
-enzymes​

Accepted Answer

A)  ​a six-carbon sugar
B)  ​found in DNA and RNA
C)  ​principal components of cell membranes
D)  ​affect metabolic reaction ratesE) A) and B)
F) None of the above

Question 4

Steroids ____.

Accepted Answer

A)   ​have no fatty-acid component
B)   ​consist of three rings
C)   ​have the same type of functional groups attached to them
D)   ​are a specialized type of wax
E)   are a specialized type of phospholipid​F) B) and E)
G) A) and B)

Question 5

-What are the arrows pointing to in the accompanying figure?

Accepted Answer

A)   ​double ionic bonds
B)   ​single ionic bonds
C)   ​double covalent bonds
D)   ​single covalent bonds
E)   ​hydrogen bondsF) D) and E)
G) A) and C)

Question 6

Cellulose is ____.

Accepted Answer

A)   ​a polysaccharide found in cell walls of plants
B)   a component of cell membranes
C)   an oligosaccharide found in animals
D)   formed by hydrolysis of monosaccharides
E)   a component of invertebrate exoskeletonsF) A) and B)
G) A) and C)

Question 7

The following are chemical functional groups that may be part of a biologically active molecule. Answer the question by
matching the items with the most appropriate group. ​
-The group on the carboxyl-terminal end of proteins

Accepted Answer

A)  ​-COOH
B)  ​-CH₃
C)  ​-NH₂
D)  ​-OH
E)  ​ F) ​-PO43-G) ​-CHOH) B) and E)
I) A) and F)

Question 8

Although carbon dioxide contains carbon, it is not considered an "organic" compound because ____.

Accepted Answer

A)   ​it is not found in the earth's crust
B)   it is not present in living cells
C)   the carbon atom is not bonded to at least one hydrogen atom
D)   the carbons are not in chains or rings
E)   it is too smallF) C) and D)
G) B) and C)

Question 9

Which of the following is found in every nucleotide?​

Accepted Answer

A)   ​ribose
B)   ​a single phosphate group
C)   ​a single carbon ring
D)   ​a double nitrogen ring
E)   nitrogen​F) C) and D)
G) A) and D)

Question 10

Fructose and glucose are both ____.

Accepted Answer

A)   ​six-carbon sugars
B)   disaccharides
C)   monosaccharides
D)   disaccharides and six-carbon sugars
E)   monosaccharides and six-carbon sugarsF) B) and C)
G) D) and E)

Question 11

A hydrolysis reaction results in ____.

Accepted Answer

A)   ​bond formation of a macromolecule
B)   bond breakage of a macromolecule
C)   lipid molecule creation
D)   nucleic acids creation
E)   ​most macromoleculesF) A) and B)
G) B) and E)

Question 12

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​F) C) and D)
G) C) and E)

Question 13

Lipids ____.

Accepted Answer

A)   ​yield less energy per gram than do carbohydrates
B)   ​include cartilage and chitin
C)   ​include fats consisting of three fatty-acid molecules and one glycerol molecule
D)   ​are composed of monosaccharides
E)   are only found in animals​F) A) and B)
G) B) and D)

Question 14

Oligosaccharides include ____.

Accepted Answer

A)   sucrose only
B)   glucose only
C)   fructose only
D)   lactose only
E)   both sucrose and lactoseF) A) and C)
G) C) and E)

Question 15

The following are basic building blocks of biopolymers. Match the building blocks with the statements below.​
-the basic unit of proteins

Accepted Answer

A)  ​amino acid
B)  ​glucose
C)  ​glycerol
D)  ​fatty acid
E)  ​nucleotideF) B) and E)
G) D) and E)

Question 16

The following are chemical functional groups that may be part of a biologically active molecule. Answer the question by
matching the items with the most appropriate group. ​
-The amine group

Accepted Answer

A)  ​-COOH
B)  ​-CH₃
C)  ​-NH₂
D)  ​-OH
E)  ​ F) ​-PO43-G) ​-CHOH) B) and C)
I) A) and B)

Question 17

The interaction of two or more polypeptide chains in a hemoglobin molecule is its ____ structure.

Accepted Answer

A)   ​primary
B)   ​secondary
C)   ​tertiary
D)   ​quaternary
E)   combined​F) A) and E)
G) B) and C)

Question 18

The following are chemical functional groups that may be part of a biologically active molecule. Answer the question by
matching the items with the most appropriate group. ​
-The methyl group

Accepted Answer

A)  ​-COOH
B)  ​-CH₃
C)  ​-NH₂
D)  ​-OH
E)  ​ F) ​-PO43-G) ​-CHOH) D) and E)
I) B) and D)

Question 19

The following are chemical functional groups that may be part of a biologically active molecule. Answer the question by
matching the items with the most appropriate group. ​
-The carbonyl group of simple sugars

Accepted Answer

A)  ​-COOH
B)  ​-CH₃
C)  ​-NH₂
D)  ​-OH
E)  ​ F) ​-PO43-G) ​-CHOH) A) and F)
I) A) and E)

Question 20

The following are chemical functional groups that may be part of a biologically active molecule. Answer the question by
matching the items with the most appropriate group. ​
-The aldehyde group in simple sugars

Accepted Answer

A)  ​-COOH
B)  ​-CH₃
C)  ​-NH₂
D)  ​-OH
E)  ​ F) ​-PO43-G) ​-CHOH) C) and F)
I) D) and E)

Exam 3: Molecules of Life

A hydrolysis reaction results in ____.

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Match the molecules below with their functions​ -main storage carbohydrate in plants

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Choose the one most appropriate item from its description. -enzymes​

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Cellulose is ____.

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The following are chemical functional groups that may be part of a biologically active molecule. Answer the question by matching the items with the most appropriate group. ​ -The amine group

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The following are chemical functional groups that may be part of a biologically active molecule. Answer the question by matching the items with the most appropriate group. ​ -The aldehyde group in simple sugars

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Which molecule is incorrectly matched with its monomer?​

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The following are chemical functional groups that may be part of a biologically active molecule. Answer the question by matching the items with the most appropriate group. ​ -The group on the carboxyl-terminal end of proteins

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The following are basic building blocks of biopolymers. Match the building blocks with the statements below.​ -the basic unit of proteins

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Which of the following is found in every nucleotide?​

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Steroids ____.

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Fructose and glucose are both ____.

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The interaction of two or more polypeptide chains in a hemoglobin molecule is its ____ structure.

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-What are the arrows pointing to in the accompanying figure?

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Oligosaccharides include ____.

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All steroids have ____.

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The following are chemical functional groups that may be part of a biologically active molecule. Answer the question by matching the items with the most appropriate group. ​ -The methyl group

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Although carbon dioxide contains carbon, it is not considered an "organic" compound because ____.

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Lipids ____.

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The following are chemical functional groups that may be part of a biologically active molecule. Answer the question by matching the items with the most appropriate group. ​ -The carbonyl group of simple sugars

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Match the molecules below with their functions -main storage carbohydrate in plants

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Choose the one most appropriate item from its description. -enzymes

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The following are chemical functional groups that may be part of a biologically active molecule. Answer the question by matching the items with the most appropriate group. -The amine group

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The following are chemical functional groups that may be part of a biologically active molecule. Answer the question by matching the items with the most appropriate group. -The aldehyde group in simple sugars

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Which molecule is incorrectly matched with its monomer?

Correct Answer
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The following are chemical functional groups that may be part of a biologically active molecule. Answer the question by matching the items with the most appropriate group. -The group on the carboxyl-terminal end of proteins

Correct Answer
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The following are basic building blocks of biopolymers. Match the building blocks with the statements below. -the basic unit of proteins

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Which of the following is found in every nucleotide?

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The following are chemical functional groups that may be part of a biologically active molecule. Answer the question by matching the items with the most appropriate group. -The methyl group

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The following are chemical functional groups that may be part of a biologically active molecule. Answer the question by matching the items with the most appropriate group. -The carbonyl group of simple sugars

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