Humans as Organisms 1 Flashcards

(52 cards)

1
Q

What is the role of carbohydrates in the body?

A

Provide a quick form of energy

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2
Q

What is the role of protein in the body?

A

Growth, building and repairing body tissues and muscles

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3
Q

What is the role of fats in the body?

A

Provides a store of energy and insulation from the cold

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4
Q

What is the role of vitamin A in the body?

A

Important for your eyesight

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5
Q

What is the role of vitamin D in the body?

A

important to help you have strong bones and teeth

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6
Q

Why is Iron important in the body?

A

To stop you feeling tired and help make your red blood cells

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7
Q

Why is calcium important in the body?

A

For strong bones and teeth

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8
Q

Why is fibre important in your body?

A

It helps your digestion

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9
Q

What disease can you get if you dont have enough vitamin C?

A

Scurvy

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10
Q

What disease can you get if you dont have enough vitamin D?

A

Rickets

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11
Q

What disease can you get if you dont have enough Iron?

A

Anaemia

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12
Q

What disease can you get if you dont have enough protein?

A

Kwashiorkor

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13
Q

What is anorexia?

A

When you dont eat enough food and become too skinny

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14
Q

What is obesity?

A

when you eat too much food and become too fat

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15
Q

What is digestion?

A

When you break down the big molecules in food into smaller molecules which your body can absorb

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16
Q

Why is digestion important?

A

The large molecules of food are insoluble and need to be made into smaller molecules which are soluble

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17
Q

What does insoluble mean?

A

It cant dissolve in water

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18
Q

What does soluble mean?

A

It can dissolve in water

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19
Q

Where do the small molecules of food get absorbed in the body and where do they go?

A

They are absorbed in the small intestine lining and go into the blood

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20
Q

Where is saliva produced?

A

In the mouth

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21
Q

What is faeces?

A

Poo - undigested food that is removed from the body

22
Q

Where is faeces excreted / egested (removed from the body)?

23
Q

How does food go from the mouth to the stomach?

A

It goes through the oesophagus

24
Q

Where is water removed from undigested food?

A

The large intestine

25
Which digestive organ has a strong acid inside it?
The stomach
26
Where is faeces stored?
In the rectum
27
What does liver do?
produces bile which you need for digestion
28
What does the gallbladder do?
It stores bile
29
What do the small intestines do?
Digest and absorb nutrients from food
30
What does the pancreas do?
Produces enzymes which help break down the large molecules into smaller ones which can be absorbed
31
What does the stomach do?
It is the start of chemical digestion with enzymes
32
What are enzymes?
they are biological catalysts - they can speed up reactions in a cell
33
What shape are enzymes?
Each enzyme is a specific shape and they can also fit a specific molecule and work on them
34
What enzyme breaks down starch and carbohydrates?
amylase
35
What enzyme breaks down protein?
protease
36
What enzyme breaks down lipids (fats)?
lipase
37
How can you test for proteins?
Sodium hydroxide turns purple
38
How can you test for sugars?
benedicts solution turns red
39
How can you test for lipids?
Ethanol test goes milky white
40
How can you test for starch?
Iodine test turns black
41
How well does a human enzyme work at 10 degrees? why?
Not very well because they are cold and can't move very quickly to help the reaction
42
How well does a human enzyme work at 70 degrees? why?
It won't work at all because it is too hot and the enzymes have broken and become denatured so they can't help the reaction
43
What temperature do human enzymes work best at? what is this called?
It is very long, has a good blood supply and large surface area
44
What temperature do human enzymes work best at? what is this called?
They workbes t at body temperature - 37 degrees this is called the optimum temperature
45
What are the two roles of bile?
1. Neutralises the stomach acid 2. Breaks the fat droplets in smaller droplets to make it easier to digest
46
What are the 7 food groups?
Carbohydrates, protein, lipids, vitamins, minerals, fibre, water
47
Examples of carbohydrates
breads, pasta, potatoes, cereal
48
Examples of Proteins
meats, beans, fish, eggs,
49
Examples of foods with lipids (fats)?
Oil, dairy, nuts
50
Examples of vitamins?
A, B, C, D, E, K
51
Examples of minerals?
calcium, potassium, sodium, magnesium
52
Which foods are digested in the stomach?
Proteins