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Question # 00085545
Subject: Biology
Due on: 08/26/2015
Posted On: 07/27/2015 02:43 AM

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CHAPTER 14 PROTEINS
1. How is the tripeptide shown designated?

a. Ala-Cys-Asp
b. Ala-Cys-Glu

c. Asp-Cys-Ala
d. Glu-Cys-Ala

2. How is the tripeptide designated?

a. Ala-Cys-Asp
b. Ala-Cys-Glu

c. Asp-Cys-Ala
d. Glu-Cys-Ala

3. Which of the following is glycylalanine?
a.

c.

b.

d.

4. When will a protein have a net positive charge?
a.
b.
c.
d.

always
never
when the pH is above its isoelectric point
when the pH is below its isoelectric point

5. When will a protein have a net negative charge?
a. always
b. never
c. when the pH is above its isoelectric point
d. when the pH is below its isoelectric point

6. When will a protein have the lowest solubility?
a. when the pH is very low
b. when the pH = 7

c. when the pH is very high
d. at its isoelectric point

7. Which of the following is true of proteins?
a.
b.
c.
d.

All proteins are acidic.
All proteins are basic.
All proteins are neutral.
The acid/base properties of a protein depend on the identity of its side chains.

8. Which of the following defines the primary structure of proteins?
a.
b.
c.
d.

the geometric arrangement of the backbone atoms
the geometric arrangement of the side chains
the sequence of the amino acids
all of the above

9. How many dipeptides can be made using the 20 standard amino acids?
a. 20
b. 40

c. 200
d. 400

10. Consider the following image.

What type of interaction is depicted by the dashed line?
a. hydrogen bonding
b. covalent bonding
c. hydrophobic interactions
d. salt bridges

CHAPTER 12 CARBOHYDRATES
1. For the solvents water, ethanol, and benzene which gives the correct order of solubility of
monosaccharides?
a. benzene > ethanol > water
b. benzene > water > ethanol

c. water > ethanol > benzene
d. water > benzene > ethanol

2. The cyclic structures of monosaccharides are which of the following?
a. acetals
b. hemiacetals

c. ethers
d. esters

3. The reaction of monosaccharides to form a disaccharide is an example of which of the following
reactions?
a. condensation
b. hydrolysis

c. reduction
d. oxidation

4. Complete hydrolysis of which of the following disaccharides yields a single monosaccharide?
a. lactose
b. maltose

c. sucrose
d. none of these

5. Which of the following is obtained as a result of the complete hydrolysis of starch?
a. D-glucose
b. lactose

c. maltose
d. sucrose

6. Glycogen is structurally similar to which of the following?
a. amylopectin
b. amylose

c. cellulose
d. none of these

7. Examine the following structures.

A
B
Which substance would be classified as an aldopentose?
a. A
b. B
c. C
d. D

C

D

C

D

8. Examine the following structures.

A

B

Which substance would be classified as an ketohexose?
a. A
b. B
c. C
d. D

9. Examine the following structures.

A
B
Which substance would be classified as an aldohexose?
a. A
b. B
c. C
d. D

C

D

C

D

10. Examine the following structures.

A

B

Which substance has an L-configuration?
a. A
b. B
c. C
d. D

CHAPTER 13 LIPIDS
1. Which of the following is true of most fatty acids found in triglycerides?
a.
b.
c.
d.

They are unbranched.
They contain more than 20 carbon atoms.
They contain an odd number of carbon atoms.
none of the above

2. Which of the following type of reaction is involved in saponification?
a. condensation
b. dehydration

c. hydrogenation
d. hydrolysis

3. Which of the following is a reactant in a saponification reaction?
a. a strong acid
b. a weak acid

c. a strong base
d. a weak base

4. How many rings are associated with the steroid structure?
a. 3
b. 4

c. 5
d. 6

5. Which of the following structural arrangements is the steroid structure?
a.

c.

b.

d.

6. Consider the following structure.

Which of the following is a correct classification for this substance?
a. fatty acid
b. glycerol

c. triglyceride
d. diester

7. Which number in the diagram represents the glycerol backbone of this structure?

a.
b.
c.
d.

1
2
3
5

8. Which number in the diagram represents an ester linkage?

a.
b.
c.
d.

1
2
3
4

9. Which number in the diagram represents an unsaturated fatty acid?

a.
b.
c.
d.

1
2
3
4

10. Fatty acids contain:
a. amine groups
b. amide groups
c. carboxylic acid groups
d. anhydride groups


CHAPTER 14 PROTEINS
1. How is the tripeptide shown designated?

a. Ala-Cys-Asp
b. Ala-Cys-Glu

c. Asp-Cys-Ala
d. Glu-Cys-Ala

2. How is the tripeptide designated?

a. Ala-Cys-Asp
b. Ala-Cys-Glu

c. Asp-Cys-Ala
d. Glu-Cys-Ala

3. Which of the following is glycylalanine?
a.

c.

b.

d.

4. When will a protein have a net positive charge?
a.
b.
c.
d.

always
never
when the pH is above its isoelectric point
when the pH is below its isoelectric point

5. When will a protein have a net negative charge?
a. always
b. never
c. when the pH is above its isoelectric point
d. when the pH is below its isoelectric point

6. When will a protein have the lowest solubility?
a. when the pH is very low
b. when the pH = 7

c. when the pH is very high
d. at its isoelectric point

7. Which of the following is true of proteins?
a.
b.
c.
d.

All proteins are acidic.
All proteins are basic.
All proteins are neutral.
The acid/base properties of a protein depend on the identity of its side chains.

8. Which of the following defines the primary structure of proteins?
a.
b.
c.
d.

the geometric arrangement of the backbone atoms
the geometric arrangement of the side chains
the sequence of the amino acids
all of the above

9. How many dipeptides can be made using the 20 standard amino acids?
a. 20
b. 40

c. 200
d. 400

10. Consider the following image.

What type of interaction is depicted by the dashed line?
a. hydrogen bonding
b. covalent bonding
c. hydrophobic interactions
d. salt bridges

Tags getting answers sure make want ahead following isoelectric ampgt protein proteins substance amino structuresabwhich arrangement water benzene geometric number examine fatty alacysgluc aspcysalad alacysaspb designateda tripeptide true backbone represents ethanol type diagram chapter consider claified interaction

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Tutorial Preview …a xxxxxxxxxxxxxx reaction?a x strong acidb x weak acidc x strong xxxxx x weak xxxxx How many xxxxx are associated xxxx the xxxxxxx xxxxxxxxxxx 3b xx 5d 65 xxxxx of the xxxxxxxxx structural xxxxxxxxxxxx xx the xxxxxxx structure?a c x d 6 xxxxxxxx the xxxxxxxxx xxxxxxxxx Which xx the following xx a correct xxxxxxxxxxxxxx for xxxx xxxxxxxxxxx fatty xxxxx glycerolc triglycerided xxxxxxxx Which number xx the xxxxxxx xxxxxxxxxx the xxxxxxxx backbone of xxxx structure?a b x d xxxxx xxxxx number xx the diagram xxxxxxxxxx an ester xxxxxxxxx b x x 12349 xxxxx number in xxx diagram represents xx unsaturated xxxxx xxxxxx b x d 1234 xx Fatty acids xxxxxxxxx amine xxxxxxx xxxxx groupsc xxxxxxxxxx acid groupsd xxxxxxxxx groupsCHAPTER 14 xxxxxxxxx How xx xxx tripeptide xxxxx designated?a Ala-Cys-Aspb xxxxxxxxxxxx Asp-Cys-Alad Glu-Cys-Ala2 xxx is xxx xxxxxxxxxx designated?a xxxxxxxxxxxx Ala-Cys-Gluc Asp-Cys-Alad xxxxxxxxxxxx Which of xxx following xx xxxxxxxxxxxxxxx c x d 4 xxxx will a xxxxxxx have x xxx positive xxxxxxxx b c x alwaysneverwhen the xx is xxxxx xxx isoelectric xxxxxxxxx the pH xx below…
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