Carbohydrate metabolism reading 1 Flashcards

1
Q

Macromolecules composed of carbon and a 2:1 ratio of hydrogen to oxygen, including sugars, starches, glycogen, and cellulose are categorized as _____.

A

carbohydrates

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2
Q

Identify the roles of carbohydrates in the body.

A

Serves as an energy source

Forms cell membrane structure

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3
Q

A monosaccharide will have about how many carbon atoms?

A

6

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4
Q

There are 3 classes of carbohydrates: monosaccharides, disaccharides and polysaccharides. Glucose is an example of a…glycogen is an example of a…and lactose is an example of a disaccharide.

A

monosaccharides

polysaccharides

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5
Q

Molecules with the same molecular formula but having different arrangements of their component atoms are known as ______.

A

isomers

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6
Q

In addition to being the principle molecule that is broken down to provide energy for the body, carbohydrates also do which of the following?

A

Provide bulk in the feces

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7
Q

Match the specific carbohydrate with the correct class of carbohydrate.

A

Lactose: Disaccharide
Glucose: Monosaccharide
Starch: Polysaccharide

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8
Q

Sucrose is composed of two monosaccharides. It is a ______.

A

disaccharide

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9
Q

Indicate all choices that describe glycogen.

A

A long chain of glucose molecules

Stored in the liver

An energy storage molecule in animals

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10
Q

When two simple sugars are covalently linked together, a(n) ______ is formed.

A

disaccharide

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11
Q

Choose the disaccharides from the list below. Check all that apply.

A

Maltose

Sucrose

Lactose

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12
Q

The major polysaccharide in plants that is important for structure is ______, whereas the principle polysaccharide in plants that is used for storage is ______.

A

cellulose

starch

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13
Q

The chemical digestion of the disaccharides occurs in the ______.

A

small intestine

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14
Q

Sucrose is composed of two monosaccharides. It is a ______.

A

disaccharide

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15
Q

Identify the enzymes that aid in the chemical digestion of carbohydrates. Select all that apply.

A

Amylase

Disaccharidases

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16
Q

Chemical digestion of starch due to secretion of enzymes occurs in the ______. Select all that apply.

A

small intestine

mouth

17
Q

The majority of monosaccharides are absorbed into ______ of the ______.

A

capillaries

small intestines

18
Q

Glucose absorption across the intestinal epithelium occurs as a result of a symport with ______.

A

Na+

19
Q

Amylase promotes the partial digestion of ______.

A

starch