AP BIOLOGY

LABORATORY REVIEW

MOLECULAR BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is/are true of cellulose?I. It is an unbranched polymer of alpha-D-glucoseII. It contains
A
I and II only
B
I and III only
C
II and III only
D
I, II and III
Explanation: 

Detailed explanation-1: -The primary structure of cellulose is simple unbranched polymer which comprises a long chain of glucose monomers which is attached together by 1-4 glycosidic bonds. This bond helps in forming microfibrils which provide strength to the plants.

Detailed explanation-2: -Cellulose is a structural polysaccharide. It is made up of a number of glucose molecules joined by -1, 4 linkage. The cellulose molecule is an unbranched polymer of glucose unlike starch which is also a polymer of glucose but shows branching.

Detailed explanation-3: -Cellulose is a polymer of beta glucose units in an unbranched 1-4 glycosidic linkage.

Detailed explanation-4: -Cellulose is an unbranched glucose residue polymer put together via beta-1, 4 connections, which enables the molecule to form long, straight chains.

There is 1 question to complete.