Enzymes and digestion

Question 1

what is a catalyst?

Answer 1

substance which increases rate of reaction without being used up or changed.

Question 2

functions of proteins..

Answer 2

1) structural components of tissue 2) hormones 3) antibodies.

Question 3

what happens when enzyme catalysed reaction is heated above certain temperature?

Answer 3

bonds in the enzyme break and it’s special shape is destroyed. it becomes denatured/damaged.

Question 4

what is the optimum pH for enzymes?

Answer 4

pH 7

Question 5

which enzyme works best at pH 2

Answer 5

pepsin

Question 6

which three places is amylase produced?

Answer 6

salivary glands, pancreas and small intestine.

Question 7

which three places is protease produced?

Answer 7

stomach, pancreas, small intestine.

Question 8

which two places is lipase produced?

Answer 8

pancreas, small intestine.

Question 9

where is bile produced, stored, and it’s function?

Answer 9

produced in liver, stored in gall bladder, neutralises hydrochloric acid and emulsifies fats.

Question 10

what is respiration?

Answer 10

It is the process of releasing energy from breakdown of glucose(in every cell)

Question 11

equation for aerobic respiration..

Answer 11

Glucose + oxygen –> carbon dioxide + water.

Question 12

uses of respiration…

Answer 12

1) build larger molecules from smaller ones.
2) muscle contraction
3) maintain body temp.