Enzymes Video Lesson

Multiple Choice

Enzymes are

• Lipids

• Protein

• Carbohydrates

• Nucleic Acids

Multiple Choice

Enzymes are responsible for-

• Speeding up reactions

• Giving the body energy

• Slowing down reactions

Multiple Choice

Which of these is most likely an enzyme?  

• Sucrose

• Galactose

• Fructose

• Amylase

Multiple Choice

Letter D...

• active site

• enzyme

• substrate

• products

Multiple Choice

Letter B...

• active site

• enzyme

• substrate

• products

Multiple Choice

Letter c...

• active site

• enzyme

• substrate

• products

Multiple Choice

Each enzyme only has 1 substrate that will fit its active site.  What is this called?

• reusablility

• denaturation

• specificity

• fragility

Multiple Choice

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

• reusable

• catalyst

• specific

• fragile

Multiple Choice

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

• true

• false

Multiple Choice

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

Multiple Choice

What happens when enzymes are heated to a high temperature?

• The enzymes die.

• The shapes of the enzyme are altered denature

• The enzymes' amino acid sequence changes.

• The enzymes remain the same