Starch, Glycogen and cellulose

Question 1

Differences between Starch and Cellulose

Answer 1

-> Starch coiled branches(amylose) where as cellulose has more branches (than amylopectin) but its branches are shorter.
-> Starch is made from Alpha glucose where as Cellulose has Beta glucose.

Question 2

What is cellulose made of?

Answer 2

• Many chains of beta glucose
• Straight unbranched chains - Flipped
• Between bonds there is hydrogen bonds

Question 3

Structure of amylopectin

Answer 3

• Branched chains
  -> easily hydrolised as enzymes can reach it faster

Question 4

2 types of starch

Answer 4

• Amylose
• Amylopectin

Question 5

Structure of Amylose

Answer 5

• Coiled structure
  -> Compact, easily fit into small spaces

Question 6

Properties of Starch

Answer 6

• Large and insoluble - doesn’t dissolve in water - Small surface area - less space taken up
• Branched chains(Amylopectin) - Exposed branches are easily hydrolised as enzymes can reach them faster
• Coiled Chains ( Amylose) - Compact - fit into small space