Enzymes revision

The following shows the process of an enzyme-catalysed reaction.

Which of them are substrates?

• molecule A

• molecule B

• molecule C

• molecule D

• molecule E

The following shows the process of an enzyme-catalysed reaction.

Which of them is product?

• molecule A

• molecule B

• molecule C

• molecule D

• molecule E

The following shows the process of an enzyme-catalysed reaction.

Which of them is the enzyme-substrate complex?

• molecule A

• molecule B

• molecule C

• molecule D

• molecule E

The following shows the process of an enzyme-catalysed reaction.

Which of them is the enzyme?

• molecule A

• molecule B

• molecule C

• molecule D

• molecule E

Which of the following is NOT a property of enzymes?

• Enzymes are protein molecules.

• Enzymes were chemically altered by the reactions they catalyse.

• Enzymes are reusable.

• Enzymes are highly specific in action.

The picture shows the energy profile of a reaction.

This is a/an ​ (a)   reaction. It is because the ​ (b)   of the product is ​ (c)   than that of the reactants, so energy is ​ (d)   by the reaction.

• anabolic
• higher
• energy level
• absorbed
• lower
• catabolic
• released

What 3 letters do enzymes typically end in?

• -ose
• -ase
• -ese
• -tic

What is a substance called if it speeds up a chemical reaction?

• reusable

• catalyst

• specific

• fragile