Leaving Certificate BiologyEnzymes 1 iQuiz

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The substance upon which an enzyme acts is called the …

Substrate

Filtrate Solvent

Solute

Which of the following is an enzyme, found in saliva, whose

product is maltose?

Catalase

Lipase Amylase

Maltase

Amylase works on which substrate to produce maltose?

Lipids Starch

Protein Glucose

Name an enzyme that breaks down

hydrogen peroxide to oxygen and water.

Erepsin Catalase

Lipase Amylase

The optimum temperature for human enzyme activity is …

27 °C 57 °C

47 °C 37 °C

Which of the following enzymes does not digest carbohydrates?

Sucrase Lipase

Lactase Maltase

What type of biological substance are enzymes?

Fats Fatty acids

Proteins Carbohydrates

What name is given to the position on an enzyme where the substrate

is attached?

Acute site Active site

Enzyme-substrate complex None of these

What term describes using living organisms to produce useful

products, e.g. yeast to produce bread and alcohol?

Bioprocessing Biophysics

Batch processing Continuous flowprocessing

Which of the following terms is given to a container in which a

living thing is used in the production of something useful?

Biome Biotechnology

Bioreactor None of these

What term is used to describe an enzyme that has been destroyed

by excessive heat, pH, etc. and will not 'work' again?

Degenerated Denatured

Depleted Dehydrated

This term describes an enzyme trapped in beads or gel so that it

will react with, but not mix with, its substrate.

Deactivated Energised

Activated Immobilised

A gel commonly used to immobilise enzymes is …

Sodium stearate Sodium alginate

Calcium alginate Dax

The temperature or pH at which an enzyme works best is called its …

Favourite Best

Optimum Maximum

The theory of an enzyme slightly changing shape to fit its substrate

is called the …

Moulding enzyme model Induced fit model

Flexible enzyme model Elastic fit model

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Enzymes 1 iQuiz