Question 1

Amylopectin is a straight-chain polysaccharide.

Accepted Answer

A) True 
 B)False  False

Question 2

Humans cannot digest cellulose because they

Accepted Answer

A)   lack the necessary enzymes to digest β-glycosides.
B)   are allergic to β-glycosides.
C)   are poisoned by β-glycosides.
D)   have intestinal flora which use up β-glycosides.
E)   cannot digest chlorophyll. A

Question 3

Refer to the disaccharides below to answer the question(s) that follow. 
-In the figure above, the monosaccharide unit on the left is a(n)

Accepted Answer

A)   aldopentose.
B)   ketopentose.
C)   aldohexose.
D)   aldoheptose.
E)   ketohexose. E

Question 4

During photosynthesis, carbon dioxide and water are converted to glucose and oxygen by

Accepted Answer

A)   large animals.
B)   insects.
C)   mushrooms.
D)   green plants.
E)   earthworms.

Question 5

Identify each Fischer projection as the D- or L-isomer.
-

Accepted Answer

The answer of Identify each Fischer projection as the D-...

Question 6

A monosaccharide that consists of 5 carbon atoms, one of which is in a ketone group, is classified as a(n)

Accepted Answer

A)   aldotetrose.
B)   aldopentose.
C)   aldohexose.
D)   ketotetrose.
E)   ketopentose.

Question 7

State whether each of these structures is the α- or β-form.
-

Accepted Answer

The answer of State whether each of these structures is...

Question 8

Refer to the disaccharides below to answer the question(s) that follow. 
-Hydrolysis of the disaccharide above gives the monosaccharides

Accepted Answer

A)   fructose and ribose.
B)   fructose and galactose.
C)   ribose and glucose.
D)   ribose and galactose.
E)   fructose and lactose.

Question 9

In the L- isomer of a Fischer projection of a monosaccharide, the -OH group furthest from the carbonyl is written

Accepted Answer

A)   on the left of the top chiral carbon.
B)   on the right of the top chiral carbon.
C)   on the left of the middle chiral carbon.
D)   on the left of the bottom chiral carbon.
E)   on the right of the bottom chiral carbon.

Question 10

Photosynthesis uses __________ as an energy source.

Accepted Answer

A)   glucose
B)   carbon dioxide
C)   chlorophyll
D)   oxygen
E)   sunlight

Question 11

Hyperglycemia is a condition in which

Accepted Answer

A)   the glucose level in the blood is about 100 mg/dL.
B)   the amount of glucose in the urine is lower than normal.
C)   the glucose level in the blood is higher than normal.
D)   the glucose level in the pancreas is lower than normal.
E)   the glucose level in the liver is lower than normal.

Question 12

Which group of carbohydrates cannot be hydrolyzed to give smaller molecules?

Accepted Answer

A)   monosaccharides
B)   disaccharides
C)   trisaccharides
D)   oligosaccharides
E)   polysaccharides

Question 13

Aspartame and Saccharin are two examples of

Accepted Answer

A)   disaccharides.
B)   polysaccharides.
C)   chlorosaccharides.
D)   alcohol sweeteners.
E)   noncarbohydrate sweeteners.

Question 14

The breakdown of carbohydrates to carbon dioxide and water in the body is called

Accepted Answer

A)   reduction
B)   respiration.
C)   photosynthesis.
D)   anabolism.
E)   mutarotation.

Question 15

Amylose is a form of starch which has

Accepted Answer

A)   only β-1,4-bonds between glucose units.
B)   only α-1,4-links bonds glucose units.
C)   both α-1,4-and β-1,4-bonds between glucose units.
D)   hemiacetal links joining glucose units.
E)   carbon-carbon bonds joining glucose units.

Question 16

Cellulose will give a positive Benedict's test.

Accepted Answer

A) True 
 B)False

Question 17

Identify each Fischer projection as the D- or L-isomer.
-

Accepted Answer

The answer of Identify each Fischer projection as the D-...

Question 18

Glucose is stored in animals as glycogen.

Accepted Answer

A) True 
 B)False

Question 19

Maltose is a

Accepted Answer

A)   monosaccharide.
B)   disaccharide.
C)   trisaccharide.
D)   polysaccharide.
E)   phosphosaccharide.

Question 20

A monosaccharide can be hydrolyzed to smaller units.

Accepted Answer

A) True 
 B)False

Exam 15: Carbohydrates

Amylopectin is a straight-chain polysaccharide.

Humans cannot digest cellulose because they

Refer to the disaccharides below to answer the question(s) that follow. -In the figure above, the monosaccharide unit on the left is a(n)

During photosynthesis, carbon dioxide and water are converted to glucose and oxygen by

Identify each Fischer projection as the D- or L-isomer. -

A monosaccharide that consists of 5 carbon atoms, one of which is in a ketone group, is classified as a(n)

State whether each of these structures is the α- or β-form. -

Refer to the disaccharides below to answer the question(s) that follow. -Hydrolysis of the disaccharide above gives the monosaccharides

In the L- isomer of a Fischer projection of a monosaccharide, the -OH group furthest from the carbonyl is written

Photosynthesis uses __________ as an energy source.

Hyperglycemia is a condition in which

Which group of carbohydrates cannot be hydrolyzed to give smaller molecules?

Aspartame and Saccharin are two examples of

The breakdown of carbohydrates to carbon dioxide and water in the body is called

Amylose is a form of starch which has

Cellulose will give a positive Benedict's test.

Identify each Fischer projection as the D- or L-isomer. -

Glucose is stored in animals as glycogen.

Maltose is a

A monosaccharide can be hydrolyzed to smaller units.