The digestive system

Question 1

Optimum pH of different enzymes

Answer 1

Amylase=7
protease=2
Lipase=8

Question 2

denaturing

Answer 2

when an enzyme changes shape due to external factors meaning it doesn’t catalyse reactions as well

Question 3

Bile

Answer 3

Made in Liver
stored in gall bladder
released into small intestine
Emulsifies(increases the surface area) of fats and neutralises stomach acid

Question 4

How to test for starch

Answer 4

iodine

Question 5

How to test for sugar

Answer 5

benedicts

Question 6

How to test for fats

Answer 6

ethanol or Sudan III

Question 7

how to test for proteins

Answer 7

Biurets

Question 8

what are enzymes

Answer 8

proteins that are able to catalyse the breakdown of a specific nutrient (each one only works for one each hence the lock and key model working)

Question 9

what are the products when protease catalyses a reaction and where is it found

Answer 9

amino acids
stomach

Question 10

what are the products when carbohydrase catalyses a reaction and where is it found

Answer 10

starch into sugars
the mouth (amylase) and the small intestine

Question 11

what are the products when lipase catalyses a reaction and where is it found

Answer 11

glycerol & fatty acids
small intestine

Question 12

where are enzymes made

Answer 12

pancreas and small intestine mostly

Question 13

when active transport used in animal cells

Answer 13

to carry glucose into the blood stream after most of it has diffused across