enzymes 5

Question 1

starch consists of

Answer 1

1. amylose
2. amylopectin

Question 2

Which enzymes are needed to degrade starch completely to glucose?
And how do they act?

Answer 2

• Glucoamylase -> exo-enzyme
• α-amylase -> endo-enzyme

Question 3

cell wall consists of:

Answer 3

• lignin
• hemicellulose
• cellulose

Question 4

which enzyme breaks down cellulose

Answer 4

cellulases a mixture of 3 enzymes:
1. cellobiohydrolase (CBH) (exo-enzyme)
2. endoglucanase (endo-enyme)
3. beta-glucosidase (cellobiase) (from dimer to glucose)

Question 5

where does CBH 1 bind on?

Answer 5

reducing end

Question 6

where does CBH 2 bind on?

Answer 6

non-reducing end

Question 7

application of cellulases

Answer 7

1. baking
2. brewing
3. wine and juice production
4. upgrading agriculural residues