test 2

Question 1

what elements are present in carbohydrate molecule

Answer 1

carbon hydrogen and oxygen

Question 2

is starch broken down by amylase

Answer 2

yes

Question 3

is starch or glucose soluble in water

Answer 3

glucose

Question 4

is glucose or starch a small molecule

Answer 4

glucose

Question 5

what are some safety precautions

Answer 5

wear goggles , tie hair up, wear gloves

Question 6

what substance do lipase work best with

Answer 6

bile

Question 7

is bile alkaline or acid

and what does it do to stomach acid

Answer 7

bile is alkaline so neutralises stomach acid

Question 8

what does bile do to lipid

Answer 8

it emulsifies it so therefore it has a larger surface area for lipase

Question 9

3 chemical elements presents in lipids

Answer 9

carbon oxygen hydrogen

Question 10

what happens to fish in the human gut

Answer 10

it gets digested and then moves into the stomach where hcl is presents to kill the bacteria and provide optimum ph for the protease enzyme it then goes to the small intestines where nutrients are absorbed into the bloodstream and bile neutralises the stomic acid

Question 11

what does bile do

Answer 11

alkaline to neutralise the hydrochloric acid and It breaks down large drops of fat into smaller ones

Question 12

small intestines for efficient absorption

Answer 12

Microvilli on the surface of the villus further increase surface area for faster absorption of nutrients
Wall of villus is one cell thick meaning that there is only a short distance for absorption to happen by diffusion and active transport
Well supplied with a network of blood capillaries that transport glucose and amino acids away from the small intestine in the blood
Lacteal runs through the centre of the villus to transport fatty acids and glycerol away from the small intestine in the lymph

Question 13

How is the leaf adapted for photosynthesis?

Answer 13

• palisade cells have many chloroplasts and are tightly packed, as chlorophyll needed (generally called mesophyll tissue)
• xylem delivers water, as it is needed
• lower epidermis has stomata to allow gas exchange, for CO2 and O2
• phloem transports glucose produced, as sucrose, around plant
leafs are thin so gasses only have to travel a short distance
upper epidermis allow light pass through them
have large surface area

Question 14

balanced equation for photosynesisi

Answer 14

6CO2 + 6H2O > C6H12O6 + 6O2