Enzymes-Nature's Catalysts

Enzymes-Nature's Catalysts

Multiple Choice

Why are catalysts used in chemical reactions?

• To start or speed up the chemical reaction

• Catalysts are reactants.

• Catalysts are products.

Open Ended

What are some reactions that are important to keeping you alive?

Building DNA without enzymes...

• 78,000,000 Years!

• This has to occur 2,000,000,000,000 a day in your body

Building hemoglobin without enzymes...

• 2,400,000,000 (2.4 Billion) Years!

• Half the age of the earth

• Make 2,000,000,000 new red blood cells every day

Multiple Choice

If " B " is the enzyme, what is " C " ?

• Catalyst

• Substrate

• Product

Sketch the ENZYME-SUBSTRATE COMPLEX in your notebook

(Like puzzle pieces)

Multiple Choice

How fast are biological reactions with the help of enzymes?

• hours

• minutes

• seconds

• milliseconds

Open Ended

What are some biological reactions that need enzymes?