Starch, Cellulose, Glycogen, Chitin are polysaccharides found among the following. Choose the one appropriate and write against each.

Cotton fibre __________________________

Exoskeleton of cockroach __________________________

Liver __________________________

Peeled potato __________________________

How are prosthetic groups different from co-factors?

Glycine and Alanine are different with respect to one substituent on the α -carbon. What are the other common substituent groups?

Enzymes are proteins. Proteins are long chains of aminoacids linked to each other by peptide bonds. Aminoacids have many functional groups in their structure. These functional groups are, many of them at least, ionisable. As they are weak acids and bases in chemical nature, this ionization is influenced by pH of the solution. For many enzymes, activity is influenced by surrounding pH. This is depicted in the curve below, explain briefly.

Is rubber a primary metabolite or a secondary metabolite? Write four sentences about rubber.