Column I Column II P. Amylose 1. $\beta$ ($1\to 4$) Q. Sucrose 2. $\alpha$ ($1\to 4$) R. Amylopectin 3. $\alpha 1\to \beta 2$ S. Cellulose 4. $\alpha$ ($1\to 4$), $\alpha$ ($1\to 6$)
Carbohydrate Glycosidic Linkage Matching
This section details the correct pairings between carbohydrates and their specific glycosidic linkages, crucial for understanding their structure and function.
Carbohydrate Glycosidic Linkage Analysis
| Carbohydrate (Column I) | Glycosidic Linkage (Column II) |
|---|---|
| P. Amylose | 2. $\alpha$ ($1\to 4$) |
| Q. Sucrose | 3. $\alpha 1\to \beta 2$ |
| R. Amylopectin | 4. $\alpha$ ($1\to 4$), $\alpha$ ($1\to 6$) |
| S. Cellulose | 1. $\beta$ ($1\to 4$) |
Analysis:
- P. Amylose: This is a linear polysaccharide composed solely of glucose units linked via $\alpha(1\to 4)$ glycosidic bonds.
- Q. Sucrose: A common disaccharide (table sugar), it is formed from $\alpha$-glucose and $\beta$-fructose joined by an $\alpha 1\to \beta 2$ linkage.
- R. Amylopectin: This branched polysaccharide features $\alpha(1\to 4)$ glycosidic bonds in its linear chains and $\alpha(1\to 6)$ glycosidic bonds at the branch points.
- S. Cellulose: The primary structural component of plant cell walls, cellulose consists of glucose units linked by $\beta(1\to 4)$ glycosidic bonds.
Based on this analysis, the correct combination is P-2, Q-3, R-4, S-1.
Important Questions from Structure and Function of Biomolecules
- Match the biomolecules in Column I with their function given in Column II
Column I Column II P. Lectins 1. Acts as ATP dependent pump to efflux out small molecules Q. P-glycoprotein 2. Targets lysosomal enzymes to their destination R. Digitoxigenin 3. Specific carbohydrate binding proteins S. Mannose 6-phosphate 4. Inhibits Na$^+$-K$^+$ pump - Which one of the following coenzymes is utilised by alanine racemase for the conversion of L-Alanine to D-Alanine?
- Correctly match the following Monosaccharides with their respective Epimers.
Monosaccharide Epimer P. D-mannose 1. C-3 epimer of D-glucose Q. D-allose 2. C-4 epimer of D-glucose R. D-galactose 3. C-4 epimer of D-mannose S. D-talose 4. C-2 epimer of D-glucose 5. C-5 epimer of D-glucose - Which of the following show(s) optical activity at 100 mM concentration in water?
An octapeptide composed of these L-amino acids – Lys, Thr, Ser, Met, Arg, Trp, Tyr, Glu was subjected to analyses with the following outcomes:
P. The N-terminal sequencing analysis by Sanger's method yielded 'Ser' at the N-terminus
Q. Chymotrypsin treatment gave a pentapeptide, a ‘Tyr' containing dipeptide and a free ‘Glu'
R. Cyanogen bromide treatment gave two tetrapeptides
S. Trypsin treatment gave two tripeptides and a dipeptide
Which one of the following is the correct octapeptide sequence?
