Why do we need enzymes
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Why do we need enzymes? PowerPoint PPT Presentation


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Why do we need enzymes?. It lowers the energy for a chemical reaction to occur! Ex: You only have $380 f or a PS4! It cost $400 then you get a coupon so you can buy it sooner !. What is an enzyme?. Known as a BIOLOGICAL CATALYST

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Why do we need enzymes?

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Why do we need enzymes

Why do we need enzymes?

It lowers the energy for a chemical reaction to occur!

Ex: You only have $380 for a PS4!

It cost $400 then you get

a coupon so you

can buy it sooner!


What is an enzyme

What is an enzyme?

Known as a BIOLOGICAL CATALYST

Catalyst is something that speeds up a chemical reaction

Biological catalyst speeds up reactions in living cells


Properties of enzymes

Properties of Enzymes

  • They are made of PROTEIN

  • They are not changed by the reactions they speed up

  • They are SPECIFIC- means that only one particular enzyme will work with one particular chemical


What happens in the stomach

What happens in the stomach?

Pepsin is an enzyme in the stomach

HCL is hydrochloric acid is also in the stomach

Do you think the pepsin alone will digest or break down the food?

Do you think the acid alone will digest or break down the food?

Do you think the pepsin and acid together will digest or break down the food?


What does dilute mean

What does dilute mean?

  • If I add water to pepsin and acid, what happens?

  • Will plain water digest or break down food?


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