1.

(i) Write the structural difference between starch and cellulose. (ii) What type of linkage is present in Nucleic acids ? (iii) Give one example each for fibrous protein and globular protein.

Answer»

Solution :(i) Starch CONSISTS of two parts amylose and amylopectin.
Amylosein a polymerof `alpha` - D- glucoseunitsheld by`C_(1)- C_(4)`glycosidiclinkage .
Amylopectin is a polymer of `alpha`- D - glucose unitsheld be `C_(1) - C_(4)` glycosidiclinkage andbrancing OCCURS by `C_(1) - C_(6)` glycosidiclinkages.
Cellulose in a polymer of `beta` - D- glucose unitsheld by `C_(1)`of oneunit and `C_(4)` of next unit.
(ii) Linkagein nucleicacids isphosphodiester linkage.
(iii) EXAMPLEOF fibrousprotein : Kertain.
Exampleof globularprotein: Albumin .


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