Nutrition

Question 1

What is photosynthesis?

Answer 1

The process of making glucose from sunlight in the leaves of plants.

Question 2

What is an endothermic reaction in photosynthesis?

Answer 2

when light energy is converted into chemical energy within the chloroplasts

Question 3

Word equation for photosynthesis

Answer 3

Carbon dioxide + water = glucose + oxygen

Question 4

Number equation for photosynthesis

Answer 4

Co2 + H20 = C6H12O6 + O2

Question 5

How tempreture effects photosynthesis?

Answer 5

with a increase in temp the rate of photosynthesis increases

Question 6

How does light intestity affect photsynthesis?

Answer 6

Higher light intenstity = photosynthesis increase

Question 7

How does carbn dioxiode concentration affect photosynthesis?

Answer 7

carbon dioxide concentration increases= photosynthesis increases

Question 8

Whats the need of waxy cuticle?

Answer 8

evaporation + protective layer found at top of leaf

Question 9

Whats the need upper epidemis?

Answer 9

very thin and transparent to let light in

Question 10

Whats the need of palisade mesophyll?

Answer 10

lots of chloroplasts so that photosynthesis happens rapidly

Question 11

Whats the need for spongy mesophyll?

Answer 11

air space allows gases to diffuse in and out of cell. increases surface area to volume ratio

Question 12

Whats the need for lower epidermis?

Answer 12

Contains guard cells and stomata

Question 13

Whats the need for Guard cell?

Answer 13

Kidney- shaped, open and close the stomata by absorbing or losing water

Question 14

Whats the need for stomata?

Answer 14

gas exchange and loss of water by evaporation takes place

Question 15

Magnesium affects on plants

Answer 15

required for chlorophyll
can turn yellow

Question 16

Nitrate affects on plants

Answer 16

required to produce amino acids

Question 17

Factors affecting energy requirements

Answer 17

• Age
• Activity level
• Pregnancy

Question 18

Mouth

Answer 18

• Mechanical digestion: teeth
• Chemical digestion: amylase breaks down starch into glucose
• Salivary glands

Question 19

Oesophagus

Answer 19

• Tube from mouth to stomach

Question 21

Pancreas

Answer 21

• Produce carbohydrase, protease, lipase enzymes
• Secretes enzymes into stomach from small intestine

Question 22

Stomach

Answer 22

• Gastric jucie are released from stomach lining when detect food
• Digestive food is now called chyme

Question 23

Gastric jucies are made of…

Answer 23

Pepsin: enzyme break down protenis
Hydrochloric acid: makes stomach acidic in order for pepsin to work and kill ingested bacteria

Question 24

Small intestine

Answer 24

Duodenum:
-first part of small intestime
-carbohydrases, protease and ipidases digested food here
- Bile is released into the duodenum
Illeum:
-lined with villi

Question 25

Where is bile…
1. produced
2. Stored

Answer 25

1. Liver
2. Gallbladder

Question 26

Role of bile

Answer 26

1) alkaline to neutralise the hydrochloric acid
2) breaksdown large drops of fat into smaller ones

Question 27

Large intestine

Answer 27

• Water is absorbed here, to produce faeces
• faeces is stored in rectum and removedd through the anum

Question 28

Digestive enzymes broke down carhbbohydeates (starch)

Answer 28

carbohydrase
starch - maltose by amylase
maltose - glucose by maltase

Question 29

Digestive enzymes broke down protiens

Answer 29

Broke down by proteases in stomach and small intestine
Protien - amino acids

Question 30

Digestive enzymes broke down lipids

Answer 30

Broke down by lipases
lipids - glycerol + 3 fatty acids