Leaving cert biology Enzymes

What do emzymes always end in

• Ise

• Ase

• Ees

• Res

Shape of enzymes

• Round

• Globular

• Rod

• Folded

Enzymes are ...

• Form of bacteria

• Catalyst

• Made of protein

• Speed up reactions

role of substrate

• biological catalyst

• Joins an enzyme

• fuses

• Meets bacteria

what is an active site

• Site of activity

• an Immobilised enzyme

• Part of enzyme substrate joins

• Part of substrate

Active site theory

• Site of activity

• Substrate combines with active site of enzyme

• Breaks it down

• Active site changed shape slightly

• Substrate is changed to product and enzyme unchanged

Optimum ph of animals (salivary amylase )

• 2

• 8

• 4

• 7

Optimum PH of plant

• 2

• 4

• 9

• 7

Optimum PH of animals (stomach )

• 4

• 7

• 2

• 9

Effects of denaturation

• Changed shape of enzyme

• changed product

• Irreversible

• Loss of enzyme activity