Enzymes warm up Th and Fri

Activation energy is required to...

• start a reaction

• End a reaction

• produce an enzyme

• produce a catalyst

What happens when a catalyst is present?

• Reaction speeds up

• reaction slows down

• Reaction stays the same

• Reaction becomes frozen

What do enzymes do to substrates?

• Bind to them and breakdown or buildup

• Provide a safe place for them

• Give them energy

• create new enzymes.

A catalyst, like most enzymes ______________ the amount of energy needed to start a reaction

• increases

• decreases

• stays the same

At what temperature does this enzyme function the best?

• 10

• 20

• 30

• 40

The enzyme lactase will break down the sugar lactose into which of the following components? 

•  monosaccharides
• nucleic acids
• amino acids
• phospholipids

The area that the substrate fits into on the enzyme is called the:

• Active Site
• Allosteric Site
• DiSulphide Bridge
• β-Pleated Sheet

Most enzymes have the ending:

• -ase
• -ose
• -ic acid
• -ate