Carbohydrates Flashcards

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1
Q

Why does excess carbohydrate lead to obesity/diabetes/fat deposit?

A

Carbohydrates come in the form of sugars, which is stored as fat.

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2
Q

Why does excess carbohydrate lead to tooth decay?

A

Carbohydrate can come in the form of sugar. These molecules combine with saliva and bacteria to form plaque on teeth.

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3
Q

What are intrinsic sugars?

A

Naturally-occurring sugars

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4
Q

What are free sugars?

A

Sugars added to foods.

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5
Q

What are the two functions of carbohydrates?

A

Energy and fibre.

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6
Q

How is fibre a function of carbohydrates?

A

Gets rid of waste.

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7
Q

How does a carbohydrate deficiency cause weight loss?

A

Energy from the fat cells is used as backup.

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8
Q

How does a carbohydrate deficiency cause tiredness?

A

Blood sugar levels drop.

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9
Q

What percentage of total carbohydrate intake should be free sugars?

A

5%

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10
Q

What percentage of food energy per day should come from carbohydrates?

A

50%

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11
Q

What are the two types of sugars?

A

Monosaccharides and disaccharides.

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12
Q

What are monosaccharides?

A

Single sugar molecules.

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13
Q

What are disaccharides?

A

Two sugar molecules.

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14
Q

What are polysaccharides?

A

Many sugar molecules.

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15
Q

What is the one type of complex carbohydrate?

A

Polysaccharides.

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16
Q

Give the three examples of monosaccharides and say where they come from:

A

Galactose - mammals’ milk
Fructose - fruit, veg, honey
Glucose - fruit, veg

17
Q

Give three examples of disaccharides and say where they come from:

A

Sucrose - pure sugar
Maltose - cereals
Lactose - sugar from milk

18
Q

Give four examples of polysaccharides and say where they come from:

A

Starch - pasta, rice, potato
Pectin - some fruit
Dextrin - starch becomes sugar
Dietary fibre - whole grain