Topic 5 Enzymes

Enzymes are large proteins.

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• 

The chemical that an enzyme works is called a substrate.

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• 

In the diagram, what is letter A? 

• product
• substrate
• enzyme-substrate complex
• active site

Letter D...

• active site
• enzyme
• substrate
• products

Letter B...

• active site
• enzyme
• substrate
• products

Based on the graph, what is the optimal temperature for this enzyme? 

• 15^oC
• 40^oC
• 30^oC
• 35^oC

Changes in pH and temperature can ___________________ an enzyme which causes it to lose its shape and affects its function.

• puncture

• denature

• double

• delete

An enzyme speeds up a chemical reaction in the cell but can only be used once.  True or False? 

• true
• false

Enzymes are specific. This means that an enzyme only works with molecules that are....

• the right size and shape

• broken down already

• present in water

• too big for the body to handle

What does an enzyme need in order to work properly?

• The right amount of oxygen & CO2

• The right temperature & amount of water

• The right temperature & pH

• The right temperature & pressure