IB Biology 2.5

Which model best describes enzyme activity?

• lock and key

• induced fit

• induced sit

• key and lock

What is the coming together of a substrate molecule and active site known as?

• explosion

• immersion

• decision

• collision

What can affect the rate of activity of an enzyme?

• substrate, oh, temperature

• temperature, qh, substrate

• temperature, ph, substrate concentration

• ph, temperature, protein

What is a substrate?

• a product in a biochemical reaction

• a reactant in a biochemical reaction

• a biochemical reaction

• a product

Which of the following is an enzyme?

• dna

• oxygen

• sucrase

Successful collisions are...

• substrate and active site are not aligned

• substrate and active site are correctly aligned

• substrate and active site are far apart

• substrate

Can enzymes be denatured?

• yes

• no

• maybe

What is the optimum concentration of substrate molecules?

• all active sites are full and working at maximum partial efficiency

• all active sites are full and working at maximum no efficiency

• all active sites are full and working at somewhat maximum efficiency

• all active sites are full and working at maximum efficiency

Are enzymes proteins?

• yes

• no

• maybe

Tags

NGSS.HS-LS1-1

What do enzymes typically end with?

• ose

• ize

• -ase