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Biochem 1 > Polysaccharides > Flashcards

Polysaccharides Flashcards

1
Q

What is the composition of STARCH

A

Amylose(just glucose) + Amylopectin(just glucose) = glucose polymer

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2
Q

What are the bonds in STARCH

A

Amylose: Alpha1->4 glycosidic bond
Amylopectin: Alpha1->4 and Alpha1->6 glycosidic bonds

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3
Q

What are the food sources of STARCH

A

Potatoes, veggies, cereals

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4
Q

What is the composition of GLYCOGEN

A

Glucose polymer

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5
Q

What are the bonds in GLYCOGEN

A

Alpha1->4 and Alpha1->6 glycosidic bonds (more branching than amylopectin)

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6
Q

What tissues make and store GLYCOGEN

A

Liver + muscle

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7
Q

What is the composition of CELLULOSE

A

Glucose polymer

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8
Q

What are the bonds in CELLULOSE

A

Beta1->4 glycosidic bonds (indigestible in humans, fermented by bacteria in GI, especially in ruminants (cows))

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9
Q

What is a food source of CELLULOSE

A

Celery

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10
Q

What type of fiber is CELLULOSE

A

Insoluble fiber

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11
Q

Where in plants is cellulose found

A

Plant cell walls

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12
Q

What is the function of fiber in cellulose

A

Gives stool “bulk,” decreases bowel transit time (protects against colon cancer)

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13
Q

What type of fiber is BETA GLUCANS

A

Soluble fiber

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14
Q

What is a food source of BETA GLUCANS

A

Oats (cereal)

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15
Q

What is the function of BETA GLUCANS

A

Gives feeling of “fullness” after eating

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16
Q

What disease is beta glucans protective against

A

cardiovascular disease

17
Q

What is the composition of INULIN

A

Fructose polymer = Fructosan

18
Q

What are the food sources of INULIN

A

Artichoke roots, dandelions, dahlias, onions, bananas, starch of tubers

19
Q

What is the function of FOS

A

Fructooligosaccharides provide “food” for good intestinal bacteria (colon) = Probiotic

20
Q

What is the definition of a PROBIOTIC

A

Carb selectively supports growth/activity of bifold bacteria + lactobacilli

21
Q

What does FOS act like in the intestines

A

Natural antibiotic

Biochem 1 (23 decks)

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