Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Science Year 8S1 > Revision Health And Lifestyle > Flashcards

Revision Health And Lifestyle Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What is a nutrient.

A

A nutrient is an important substance needed to kepp your body healthy and alive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the 7 nutrients.

A

Carbohydrate, lipid, protein, vitamin, mineral, water and dietary fibrr

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is a balanced diet?

A

To remain healthy you must eat a balanced diet which is food containing the right nutrients in the right amounts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is a carbohydrate.

A

Needed for energy 1) simple - sugar/fruit with quick source and 2) complex carbs (starch) - bread, pasta with slow release

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are lipids and what 3 functions do they perform?

A

Fats, Oils - 1. Energy. 2. Insulation. 3. Protect organs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are two functions of proteins?

A

Organs, Muscles, immune system. 1. Repair muscles 2: Create new cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Why does body need vitamins and minerals.

A

Fresh fruit and veg in small quantities to 1. Grow 2. develop 3. Function normally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q
  1. Why is vit d/calcium needed. 2. Iron. 3. Vitamin A?
A
  1. Bones and teeth. 2. Red blood cells. 3. Eyes
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Why do you need water and how does your body lose water?

A

Cells make up 70% water. Exhale, urine, faeces, sweat, crying. 1 litre a day

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is dietary fibre?

A

Not a nutrient as body cant break it down but it bulks food to keep it moving through your body through to excretion. Found in brown starchy foods.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

If a patient has constipation what 3 things woukd a doctor advise.

A

Water, dietary fibre and fruit/veg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How do you test food for nutrients?

A

Chemical tests - crush food using pestle and mortar and add distilled water. Then add appropriate chemical solution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How do you test for 1. Starch. 2. Lipids. 3. Sugar. 4. Protein

A
  1. Starch - iodine from yellow to dark blue black
  2. Lipids - solid - rub on filter paper to see if it goes translucent or liquid - add ethanol to go cloudy
  3. Sugar - benedicts solution heat and turns from blue to orange red
  4. Protein - copper sulphate is blue and sodium hydroxide is clear. It will turn purple.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How will you test a food solution of steak?

A

Steak is a protein so use copper sulphate and sodium hydroxide to see if it turns purple.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What does malnourished mean?

A

Underweight or overweight. Not a balanced diet.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the unit of energy in food?

A

Joules or kilojoules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Three problems being under weight

A
  1. Poor immune system
  2. Lack of energy
  3. Lack of vits and minerals
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

State 4 diseases obese people will have?

A
  1. Heart disease
  2. Stroke
  3. Diabetes
  4. Cancer
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is a deficiency in vits or minerals?

A

Not enough of essential nutrients required for your body to stay healthy. Rickets is an example of of vit d.

20
Q

What is a digestive system?

A

Its a group of organs that work together to break down food.

21
Q

State what happens during digestion?

A

Stomach, the big molecules get digested, become small molecules to go into our blood.

22
Q

Name the 6 structure in the digestive system

A

Mouth
Gullet
Stomach - digestive juices and acid. Liver and pancreas also provide digestive juices
Large intestine
Small intestine
Rectum
Anus

23
Q

Describe the adaptations of the small intrstine to its function?

A

Villi are in the small intestine, they increase the surface of the intestineto enable a quick absorption of nutrients into tge blood.

24
Q

Why is it important to eat a fibre rich diet?

A

Fibre add bulk to the food helping the food pass through your digestive system to get rid of the waste products

25
Q

State why bacteria is important for your digestive system?

A

It breaks down food
They make imprtant vitamins eg vitamin k

26
Q

What is role of enzymes in your digestive system?

A

They are special proteins which break down large molecules into small molecules

27
Q

What is an example ofa biological catalyst?

A

Enzymes speed up digestion without being used up

28
Q

Name 3 enzymes

A
  1. Carbohydrase carbohydrate / sugar (mouth, stomach , large )
  2. Protease protein into amino axids 22 (stomach, small)
  3. Lipase fatty acids and glycerol (small)
29
Q

What is bile?

A

Substance made in liver to break up lipids

30
Q

Why should you eat yoghurt?

A

Bacteria in your stomach to help break down food.

31
Q

What is a drug.?

A

Chemical substance that alter the chemical reaction in your body.

32
Q

Two types of drug

A
  1. Medicinal
  2. Recreational
33
Q

Whatis a medicinal drug

A

Used in benefits - health reasons, cure a condition.

34
Q

What are recreational drugs

A

Not prescribed by doctors, used for enjoyment wtc. Very harmful. They are illegal.
Illegal - cannabis, heroin, cocaine, ecstasy
Legal - alcohol, tobacco, vaping

35
Q

What is addiction?

A

Body gets used to the changes brought by the drug. Withdrawl symptoms stop taking the drug.

36
Q

What is alcohol?

A

It is a depressemt. Alcohol contains ethanol.
Ethanol into the blood stream, affects your nervous.

37
Q

What is a deprssent?

A

Its a chemical which slows down your body reaction.

38
Q

What is the recommended amount of alcohol?

A

14 units np

39
Q

Name 3 condition if drinking for a long time?

A

Liver becomes scarred
Cirrhosis
Addiction
Death

40
Q

Why should pregnant women not drink alcohol?

A

Bsbys bloodstream
Affect baby brain (foetal alcohol syndrome]
Lesrning difficulries
Poor immune system
Reduce fertilty
Low birth weight
Still birth premature baby
Miscarriage

41
Q

What do smokers suffer from?

A

Cancer
Heart disease
Strokes
Breathing problem

42
Q

What is passive smoking?

A

When you breathe in someone else smoke.

43
Q

What is a stimulant?

A

Tobacco smoke , makes your heart beat faster and narrows blood vessels

44
Q

What is in cigarette?

A
  1. Tar - black sticky substance , blocks airways
  2. Nicotine - stimulant impacts nervous system
  3. Carbon monoxide - gas impacting blood
45
Q

How does smoking impact your health?

A
  1. Heart disease - blocked up arteries, heart attack or stroke
  2. Emphysema - alveoli in your lungs / reduced oxygen
  3. Respiratory - mucus / cilia stops working

Science Year 8S1 (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions