Question 1

Oligosaccharides include ____.

Accepted Answer

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

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.
-The carbonyl group of simple sugars

Accepted Answer

A)  -COOH
B)  -CH3
C)  -NH2
D)  -OH
E)  3 
C)  -NH2 
D)  -OH 
E)    F) -PO4- G) -CHO" class="answers-bank-image d-inline" rel="preload" >F) -PO4-G) -CHO

Question 3

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 exoskeletons

Question 4

What may be a result of the denaturation of proteins?

Accepted Answer

A)   Formation of hydrogen bonds
B)   Loss of three-dimensional structure
C)   Removal of R groups from amino acids
D)   No change in enzyme activity
E)   Formation of covalent bonds

Question 5

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

Accepted Answer

A)  Amino acid
B)  Glucose
C)  Carboxyl head
D)  Fatty acid tail
E)  Nucleotide

Question 6

Choose the monomer corresponding to the polymer stated.
 
-DNA

Accepted Answer

A)  Glucose
B)  Nucleotide
C)  Fatty acid
D)  Amino acid

Question 7

The sugars in DNA and RNA ____.

Accepted Answer

A)   have a different number of carbon atoms
B)   have the same structural formulas
C)   are the two components of sucrose
D)   have different numbers of oxygen atoms
E)   are disaccharides

Question 8

Which lipid type does not have fatty acid tails?

Accepted Answer

A)   Phospholipids
B)   Polysaccharides
C)   Unsaturated fats
D)   Steroids
E)   Saturated fats

Question 9

Match the molecules below with their functions.

-The main component of plant cell walls

Accepted Answer

A)  Glycogen
B)  Cellulose
C)  Starch
D)  Phospholipid
E)  WaxF) SteroidG) CholesterolH) DNAI) RNA

Question 10

Choose the monomer corresponding to the polymer stated.
 
-Hemoglobin

Accepted Answer

A)  Glucose
B)  Nucleotide
C)  Fatty acid
D)  Amino acid

Question 11

Figure 3.11 B
 
-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 bonds

Question 12

Classification. The following are basic building blocks of biopolymers. Match the building blocks with the statements below.
 
-The monomers of a polypeptide chain

Accepted Answer

A)  Amino acid
B)  Glucose
C)  Carboxyl head
D)  Fatty acid tail
E)  Nucleotide

Question 13

Which two units combine in various ways to form lipids?

Accepted Answer

A)   a and b
B)   a and c
C)   b and c
D)   b and d
E)   c and d

Question 14

Cholesterol ____.

Accepted Answer

A)   has a rigid backbone of four nitrogen rings
B)   is the most common steroid in animal tissue
C)   is a lipid with a fatty-acid component
D)   is needed to inhibit sexual development and maturity
E)   is needed to lubricate feathers

Question 15

Which of the following is true about phospholipid bilayers?

Accepted Answer

A)   The hydrophobic head faces the cell exterior.
B)   The polar heads face the cell interior and exterior.
C)   The hydrophobic tail faces the cell interior.
D)   The polar tails face the cell interior and exterior.
E)   The interior of the layer is highly hydrophilic.

Question 16

What groups makes amino acids and fatty acids acidic?

Accepted Answer

A)   Carbonyl
B)   Hydroxyl
C)   Ketone
D)   Carboxyl
E)   Acetyl

Question 17

Match the molecules below with their functions.

-Contains information to build a new cell

Accepted Answer

A)  Glycogen
B)  Cellulose
C)  Starch
D)  Phospholipid
E)  WaxF) SteroidG) CholesterolH) DNAI) RNA

Question 18

Classification. 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)  Carboxyl head
D)  Fatty acid tail
E)  Nucleotide

Question 19

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.
-The aldehyde group in simple sugars

Accepted Answer

A)  -COOH
B)  -CH3
C)  -NH2
D)  -OH
E)  3 
C)  -NH2 
D)  -OH 
E)    F) -PO4- G) -CHO" class="answers-bank-image d-inline" rel="preload" >F) -PO4-G) -CHO

Question 20

The versatility of which atoms can be assembled into a wide variety of organic compounds?

Accepted Answer

A)   Carbon
B)   Glucose
C)   Hydrocarbon
D)   Polymer
E)   Starch

Exam 3: Molecules of Life

The sugars in DNA and RNA ____.

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Choose the monomer corresponding to the polymer stated. -DNA

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

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Match the molecules below with their functions. -Contains information to build a new cell

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Cellulose is ____.

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The versatility of which atoms can be assembled into a wide variety of organic compounds?

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Cholesterol ____.

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Match the molecules below with their functions. -The main component of plant cell walls

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Classification. 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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Figure 3.11 B -What are the arrows pointing to in the accompanying figure?

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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. -The carbonyl group of simple sugars

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Classification. The following are basic building blocks of biopolymers. Match the building blocks with the statements below. -The monomers of a polypeptide chain

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Which of the following is true about phospholipid bilayers?

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Which lipid type does not have fatty acid tails?

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Choose the monomer corresponding to the polymer stated. -Hemoglobin

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What may be a result of the denaturation of proteins?

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What groups makes amino acids and fatty acids acidic?

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Oligosaccharides include ____.

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Which two units combine in various ways to form lipids?

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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. -The aldehyde group in simple sugars

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