What is the basic structural difference between starch and cellul… - Vidyadip

Question

What is the basic structural difference between starch and cellulose?

✓

Answer

Starch is a polymer of a-glucose and consists of two components-amylose and amylopectin. In amylose $\alpha$-D-D-( + )-glucose units held by C,-C4 glycosidic linkage and in amylopectin, $\alpha-D$ glucose units held by $C 1- C 4$ glycosidic linkage whereas branching acurs by $C _1- C _6$ glycosidic linkage. [Refer Question 35 (i) (ii) Fig.] Cellulose is a straight chain polysaccharide composed only of $\beta$-D-glucose units held by $C_1-C_4$ glycosidic linkage. (Refer Question 37 Fig.)

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following in one or two sentence." from Biomolecules→Biomolecules — all question types→Chemistry STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

What do you understand by the term glycosidic linkage?

Manganese in the $+2$ oxidation state is more stable than $+3$ oxidation state where as iron is stable at $+3$ oxidation state than $+2$ oxidation state. Explain why?

For a gas, the Henry's law constant is $1.25 \times 10^{-3} mol dm ^{-3} atm ^{-1}$ at $25^{\circ} C$. Calculate the solubility of the given gas at $2.5 atm$ and $25^{\circ} C$.

How do metals Fe, Co, Ni acquire permanent magnetic moment?

Explain Bronsted-Lowry theory of acids and bases.

Fluorine has higher electronegativity but less electron gain enthalpy. Explain.

Write preparation of acetic acid from:
(i) Dry ice (ii) Acetyl chloride.

a. 3-Methoxyhexane
b. Methyl vinyl ether
c. 1-Ethylcyclohexanol
d. Pentane-1,4-diol
e. Cyclohex-2-en-1-ol

Arrange the halogen acids in the decreasing order of :
(1) thermal stability
(2) acidic strength.

Equal volumes of two solutions, one containing glucose and another urea have osmotic pressures $12.6 atm$ and $23.8 atm$ at $25^{\circ} C$. Calculate the ratio of number of moles of urea to glucose.