Polysaccharides

Question 1

What polymer is each polysaccharide made of

Answer 1

Starch - alpha glucose
Glycogen- alpha glucose
Cellulose- beta glucose

Question 2

what is the structure of cellulose

Answer 2

Chain of 1 → 4 glycosidic bonds
Every 2nd glucose molecule is flipped which allows for bonding
Cellulose chains have hydrogen bonds between them forming microfibrils

Question 3

structure of glycogen

Answer 3

Chain of 1→ 4 glycosidic bond
Branch is bonded with 1→ 6 glycosidic bonds

Question 4

structure of amylose

Answer 4

Long chain of 1→ 4 glycosidic bonds.
These coil into a helix + held tg by weak hydrogen bonds

Question 5

Structure

Question 6

structure of amylopectin

Answer 6

Long chain of 1→ 4 glycosidic bonds
Every 25-30 molecules there is a branch
Branch is bonded with 1→ 6 glycosidic bonds

Question 7

Function and how structure supports amylopectin

Answer 7

Branching allows for free ends = easily hydrolysed into glucose for respiration
added to storage in a condensation reaction
Large= cant move out of cells
Insoluble= doesn’t affect water potential

Question 8

Function and how structure supports amylose

Answer 8

Compact= large amount of glucose is stored
Large= cant move out of cells
Insoluble= doesn’t affect water potential

Question 9

Function and how structure supports cellulose

Answer 9

Insoluble= doesn’t affect water potential
High tensile strength= microfibrils allow it to withstand turgor pressure
Permeable= molecules can move in + out of cell

Question 10

Function and how structure supports glycogen

Answer 10

Compact= branched allows animals store more
Large= cant move out of cells
Branching allows for free ends = easily hydrolysed into glucose for respiration