Carbohydrates Flashcards

0
Q

Fibre important for what 2 things?

A

diverticulosis and haemorrhoids

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1
Q

most abundant source of energy?

A

glucose

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2
Q

fiber and colon cancer:

A

not protective

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3
Q

Why have a low glycaemic index diet?

A

avoid high peak glucose levels, less insulin resistance

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4
Q

what is dextrose?

A

Glucose

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5
Q

Draw alpha D-glucopyranose

A

.

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6
Q

Which organs have glucose-6-pase?

A

liver and kidney to release free glucose

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7
Q

Where is Glut 2?

A

liver and kidney

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8
Q

what happens when liver is full with glycogen?

A

shunted into fatty acids

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9
Q

glycogen reactive?

A

chemically inert

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10
Q

what do you need to synthesize glycogen?

A

glucose-6-phosphate

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11
Q

Glycogen response to adrenaline?

A

rapidly digested and mobilized

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12
Q

What is Pompes Disease?

A

lysosomes engorged with glycogen because of lack of a-1,4-glucosidase

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13
Q

What does cyclic AMP do in glycogen fasting/flight?

A

secondary messenger and a force multiplier

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14
Q

Plant polysaccharides are what kind of glucose?

A

B1-4 linked D-glucose

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15
Q

what is non-starch polysaccharides?

A

cellulose or fibre

16
Q

Changes over diet in last 5000 years

A

more sodium
more fat
not enough calcium/fibre

17
Q

Hypertension in hunter gatherers?

A

Nope

18
Q

white bread is mainly what part of wheat?

A

endosperm

19
Q

whole grain bread includes what part of wheat?

A

husk, bran

20
Q

what is beriberi?

A

thiamine deficiency

21
Q

fibre does what in stomach and small intestine?

A

slows in stomach

speeds up in small intestine

22
Q

dental caries when pH <_____

A

5.5 from sugars metabolised into acids by bacteria

23
Q

gut transit time better if faster or slow?

A

better is faster with fibre

24
Q

extra bulk of stool with added fibre is what?

A

water, fibre is hydrophilic

25
Q

diverticulosis and haemorrhoids rarely seen is stools are how many grams per day?

A

> 100 grams per day

26
Q

what does low glycaemic index mean?

A

carbs that break down slowly and release into bloodstream gradually