Nutrition

Question 1

Photosynthesis function

Answer 1

turning light into chemical energy

Question 2

What organisms use photosynthesis to make food?

Answer 2

producers

Question 3

what type of reaction is photosynthesis?

Answer 3

Endothermic

Question 4

Where in plants does photosynthesis take place

Answer 4

In the chloroplasts

Question 5

photsynthesis word equation

Answer 5

Carbon dioxide + water —> glucose + oxygen

Question 6

Photosynthesis sign equation

Answer 6

6CO2+6H2O–>C6H12O6+6O2

Question 7

effect of temperature on the rate of photosynthesis

Answer 7

• As temp increases so does the rate of photosynthesis
• Once the temperature exceeds the optimum, the rate of photosynthesis decreases as the enzymes begin to denature

Question 8

Effect of light intensity in the rate of photosynthesis

Answer 8

As the light intensity increases so does the rate of photo synthesis

Question 9

Effect of carbon dioxide on the rate of photosynthesis

Answer 9

As the concentration of carbon dioxide increases, so does the rate of photosynthesis

Question 10

Limiting factor

Answer 10

A factor that limits the rate of reaction when there is not enough of it

Question 11

How are leaves adapted for photosynthesis

Answer 11

• Thin and provide short diffusion pathway
  -The spongy mesophyll + palisade mesophyll cells have lots of chloroplasts for photosynthesis
• waxy cuticle

Question 12

What are mineral ions used for in plants

Answer 12

plant growth

Question 13

common ions in plants

Answer 13

Magnesium ion
Nitrate ion

Question 14

Magnesium ion use

Answer 14

used to make chlorophyll

Question 15

What are nitrate ions used for

Answer 15

Used to make proteins which promote healthy growth

Question 16

Why is a balanced diet important?

Answer 16

The body needs different substances to function properly, too much or too little of different things can be harmful

Question 17

What 7 groups are needed for a balanced diet

Answer 17

Carbohydrates,proteins,lipids,vitamins,minerals,water and dietary fibre

Question 18

What is the function of carbohydrates in the diet?

Answer 18

The body’s main source of energy

Question 19

What is the function of protein in the body

Answer 19

growth and repair

Question 20

Functions of lipids in the body

Answer 20

• energy storage
• cell membranes
• Buoyancy
• Insulation

Question 21

What is vitamin A used for?

Answer 21

-Keeping the skin healthy
- Improved vision in the dark
- strengthening the immune system

Question 22

What is vitamin C used for?

Answer 22

Growth and repair

Question 23

What is vitamin D used for

Answer 23

The absorption of calcium

Question 24

What is calcium used for in the body

Answer 24

Strengthens bones and teeth

Question 25

What is Iron used for in the body

Answer 25

In haemoglobin to transport oxygen in the blood

Question 26

What is water used for in the body

Answer 26

needed for cell reactions to take place - temperature control; - transport

Question 27

Cuticle

Answer 27

thin and waxy to prevent infection and stop water loss

Question 28

where does photosynthesis take place

Answer 28

in the chloroplasts

Question 29

what is the alimentary canal

Answer 29

the complete tube food passes through as it passes through the body

Question 30

difference between the alimentary canal and digestive system

Answer 30

Alimentary canal- just involves tubes food passes through digestive system- the same tubes + digestive glands

Question 31

passage of food through the alimentary canal

Answer 31

Mouth--> Oesophagus-->stomach --> small intestine -->large intestine---> rectum

Question 32

mouth function

Answer 32

- to chew and break down food - secrete digestive enzymes

Question 33

what is the oesophagus

Answer 33

tube that carries food frm the mouth to the stomach

Question 34

stomach function

Answer 34

muscular sac containing acid the pummels the food and breaks it down further

Question 35

pancreas role in digestion

Answer 35

secretes digestive enzymes into the small intestine

Question 36

2 parts of small intestine names

Answer 36

Duodenum and ileum

Question 37

duodenum function

Answer 37

recieves food from the stomach and uses enzymes and chemical digestion to break down food

Question 38

ileum function

Answer 38

where nutrients are absorbed from the food into the blood

Question 39

How is the ileum adapted for absorption

Answer 39

lined with villi which provide a large surface area for reabsortion

Question 40

villi adaptations for absorption

Answer 40

- thin walls -large surface area - good blood supply close to the surface

Question 41

function of the colon

Answer 41

where water is reabsorbed into the blood

Question 42

rectum function

Answer 42

stores faeces b4 egestion

Question 43

How does peristalsis work

Answer 43

muscles contract in a wave like fashion and push food along

Question 44

what enzymes breal down starch into glucose

Answer 44

maltase and amylase

Question 45

what breaks down protein into amino acids

Answer 45

protease

Question 46

what breaks down lipids into glycerol and fatty acids

Answer 46

lipase

Question 47

bile function

Answer 47

- neutralises stomach acid and provides alkaline conditions for the digestive enzymes in the small intestine - emulsifiers fats

Question 48

where is bile produced

Answer 48

liver

Question 49

where is bile stored?

Answer 49

in the gall bladder

Question 50

chlorophyll function

Answer 50

it absorbs energy from light; this energy is then used to convert carbon dioxide to carbohydrates.