IB Biology Enzymes

Enzymes are an example of

• Lipids

• Carbohydrate

• Protein

• Nucleic Acid

Tags

NGSS.HS-LS1-1

What is the purpose  of an enzyme?

• give permission for the reaction
• raise activation energy
• speed up reactions
• control how many reactions occur

Enzymes are capable of increasing the rate of a chemical reaction within a living cell.  Enzymes accomplish this through which of the following means?

• reducing the number of products   
• reducing the activation energy
• increasing the temperature of the cell
• increasing the concentration of reactants 

Tags

NGSS.HS-PS1-5

What 3 letters do enzymes typically end in?

• -ose
• -ase
• -ese
• -tic

Any substance that is acted upon by an enzyme is called a(n)?

• Coenzyme
• Substrate
• Vitamin
• Polypeptide

After the enzyme and substrate bind together and perform the reaction, what does the substrate become?

• a substrate
• an enzyme
• a product
• an active site

In the diagram, what is letter A? 

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

Tags

NGSS.HS-PS1-2

Letter C...

• active site
• enzymes
• substrate
• products

Chemical reactions always involve

• the breaking of bonds in reactants.
• the formation of new bonds in products.
• the breaking of bonds in reactants and the formation of new bonds in products.
• enzymes. 

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-7

An enzyme speeds up a reaction by

• lowering the activation energy.
• raising the activation energy.
• releasing energy.
• absorbing energy.

Tags

NGSS.HS-PS1-5