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Biology Y9 > Human Nutrition > Flashcards

Human Nutrition Flashcards

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1
Q

What are the 7 groups of food substances that allow our body to work properly and stay healthy?

A

Carbohydrates
Lipids
Proteins
Minerals
Vitamins
Fiber
Water

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2
Q

What is the function and sources of carbohydrates ?

A

Provide energy
Pasta, rice, sugar

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3
Q

What is the function and sources of protein ?

A

Needed for growth and repair tissue, and to provide energy in emergencies
Meat, fish

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4
Q

What is the function and sources of lipids ?

A

Provide energy, act as an energy store and provide insulation
Butter, oily fish

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5
Q

What is the function and sources of Vitamin A?

A

Helps to improve vision,keep your skin and hair healthy
Liver

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6
Q

What is the function and sources of vitamin C?

A

To prevent scurvy
Fruit (oranges)

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7
Q

What is the function and sources of vitamin D?

A

Calcium absorption
Eggs

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8
Q

What is the function and sources of mineral oils calcium?

A

Needed to make bones and teeth
Milk,cheese

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9
Q

What is the function and sources of mineral ions iron?

A

Needed to make haemoglobin-for healthy blood
Red meat

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10
Q

What is the function and sources of water ?

A

Every bodily function relies on water,we need constant supply to replace water lost through urinating, breathing and sweating
Food and drinks

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11
Q

What is the function and sources of dietary fibre ?

A

AIDS the movement of food through the gut
Wholemeal bread, fruit

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12
Q

What is monomers?

A

Small molecules that join together to make polymers

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13
Q

What is elements?

A

Substances made up of one kind of atom

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14
Q

What elements does carbohydrates contain?

A

Carbon, oxygen and hydrogen

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15
Q

What are the complex carbohydrates?

A

Starch
glycogen

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16
Q

What are simple carbohydrates?

A

Glucose
Sucrose
Fructose

17
Q

What elements does lipids contain?

A

Carbon, hydrogen and oxygen

18
Q

What enzyme breaks down lipids?

A

Lipase

19
Q

Example of lipids?

A

Fats and oils

20
Q

What elements does proteins contain?

A

Carbon, oxygen, hydrogen, nitrogen (sometimes sulfur)

21
Q

What is proteins made out of?

A

Amino acids

22
Q

What enzyme breaks down proteins?

A

Protease

23
Q

What is lipids made of?

A

fatty acids and glycerol

24
Q

What happens to enzymes when temperature is increased?

A

Gain kinetic energy
More collisions
More often
Increase rate of reaction

25
Q

Where can you find amylase?

A

Mouth

26
Q

Where can u find protease?

A

Stomach

27
Q

Where can you find lipase?

A

Small intestine

28
Q

What is optimum pH of an enzyme?

A

This is where the enzyme works best so the rate of the reaction is at its maximum

Biology Y9 (7 decks)

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