Enzymes are biocatalysts.

Like chemical catalysts enzymes reduce the activation energy of bio processes.

Enzymes are polysaccharides.

Enzymes are very specific for a particular reaction and substrate.

Alanine

Tyrosine

Lysine

Serine

$$\alpha $$-D-Glucose + $$\beta $$-D-Glucose

$$\alpha $$-D-Glucose + $$\beta $$-D-Fructose

$$\alpha $$-D-Fructose + $$\beta $$-D-Fructose

$$\alpha $$-D-Glucose + $$\alpha $$-D-Fructose

alanine

lysine

valine

leucine