M2 - Starch, Cellulose, Glycogen

Question 1

Starch location and function

Answer 1

In plants as store of glucose

Question 2

Starch bonds between monomers

Answer 2

1-4 in amylose
1-4 and 1-6 in amylopectin

Question 3

Starch structure

Answer 3

2 polymers
Amylose - unbranched
Amylopectin - branched molecule

Question 4

How does starch structure help function

Answer 4

Can compact to fit a lot of glucose in small spaces
Branches increases SA allowing rapid hydrolysis back to glucose
Insoluble - won’t affect water potential

Question 5

Cellulose location and function

Answer 5

Plants and structural strength for cell wall

Question 6

Cellulose bonds between monomers

Answer 6

1-4 glycosidic bonds

Question 7

Cellulose structure

Answer 7

Long straight chains
Held parallel w hydrogen bonds to form fibrils
Macro fibrils combine to form cellulose fibre

Question 8

How does cellulose structure help function

Answer 8

Many hydrogen bonds provide strength
Insoluble - won’t affect water potential

Question 9

Glycogen bonds between monomers

Answer 9

1-4 and 1-6 glycosidic bonds

Question 10

Glycogen location and function

Answer 10

Animals as store of glucose

Question 11

Glycogen structure

Answer 11

Highly branched

Question 12

How does glycogen structure help function

Answer 12

Branches structure increase SA for rapid hydrolysis back to glucose
Insoluble - won’t affect water potential