Health and lifestyle

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  • Created by: Tahmena
  • Created on: 17-12-16 13:56
What 2 food groups give energy?
Carbohydrates and Fat
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What colour is starch at the beginning and the end?
orange brown-blue black
2 of 20
What is Iron used to make?
Iron is used to make blood.
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Why does a 15 year old female need more Iron than a 15 year old male?
Because a 15 year old female gets a period and iron is used to make blood.
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Explain why two 16 year old males of the same weight might need different amounts of energy?
One 16 year old male might do more active jobs and work all day whereas the other 16 year old male might do less active jobs.
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Calcium is needed for healthy bones. Explain the difference in the amount of calcium needed each day by a 15 year old male and a 30 year old male.
A 15 year old male will need more calcium because his teeth and bones are still growing whereas a 30 year old male needs less because he has stopped growing and has become weak.
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Give 2 reasons why it is important to chew food.
1. So food can pass through the oesophagus 2. So that the food can be digested.
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Why do we need calcium in our diet?
For our bones and teeth to grow and so we can have vitamins.
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What is the name of the liquid in our stomach that kills off germs and helps us to digest?
Hydrochloric acid
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How do the products of digestion get from inside the small intestine to the cells in the rest of the body?
The products of digestion pass through the small intestine wall and they are then carried in the blood.
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Why do some people keep flasks at 37 degrees?
Because 37 degrees is body temperature.
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Why was the mixture of enzyme and starch kept in a water bath?
So they are kept at a constant temperature.
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Give the name of two nutrients which are absorbed in the blood without being digested.
Vitamins and minerals
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Which nutrients passes through the body without being digested?
Fibre
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What is protein used for?
Growth and repair in the body.
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When protein digests it is broken into smaller molecules. What is the name given to these smaller molecules?
Amino acids
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It was found that pepsin doesn't digest sucrose( sugar). Explain why sucrose isn't digested by sucrose?
Because Enzymes are specific and there are different types of enzymes that break up different types of nutrients. Protease breaks down proteins like pepsin and sucrose isn't a protein it is a fat so lipids (lipase) is used to break down fat:sucrose.
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Glands in the stomach produce mucus, hydrochloric acid and an inactive form of pepsin called pepsinogen. In the stomach hydrochloric acid reacts with pepsinogen to produce pepsin. What is another purpose of hydrochloric acid?
To take away germs.
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Explain why pepsin doesn't digest protein at a temperature over 60 degrees?
The enzymes become denatured (doesn't work properly.)
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What does the villi do in the small intestine?
It increases the surface area.
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Other cards in this set

Card 2

Front

What colour is starch at the beginning and the end?

Back

orange brown-blue black

Card 3

Front

What is Iron used to make?

Back

Preview of the front of card 3

Card 4

Front

Why does a 15 year old female need more Iron than a 15 year old male?

Back

Preview of the front of card 4

Card 5

Front

Explain why two 16 year old males of the same weight might need different amounts of energy?

Back

Preview of the front of card 5
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