Except glycine all other naturally occurring amino acids are optically active.

Which of the following amino acids is not optically active?

Amino acids as the name suggest, have both an amino group and a carboxyl group in their structure.In addition all naturally occuring aminoacids (those which are found in proteins) are called L-aminoacids. From this,can you guess from which compound can the simplest aminoacid be made?

Explain briefly amphoteric nature of alpha -amino acids.

Explain briefly amphoteric nature of alpha -amino acids.

How do you explain amphoteric nature of amino acids?

How many protein forming amino acids occur in nature?

Explain ionizable nature of amino acids. Which form is called Zwitterionic form?

What do you mean by Zwitter ionic nature of amino acids?

Enzymes are proteins. These are long chains of amino acids linked to each other by peptide bonds. Amino acids 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.

What do you mean by Amphoteric nature of alpha -amino acid ?