enzymes

Enzymes

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Enzymes. Chemical Reaction. Occurs when bonds are broken or formed to create a new substance. Reactants Products PB + J + Bread  PB&J Sandwich. Metabolism. Sum of all chemical reactions in living things. - PowerPoint PPT Presentation

TRANSCRIPT

Enzymes

Chemical Reaction

Occurs when bonds are broken or formed to create a new substance

Reactants Products

PB + J + Bread PB&J Sandwich

Metabolism

Sum of all chemical reactions in living things

Cells regulate chemical reactions through the use

of proteins called ENZYMES

Characteristics of Enzymes #1

Enzymes are biological catalysts

What is a Catalyst?

Catalysts speed up chemical reactions without being involved

Ex: What do you do to help sugar dissolve faster in tea?

Example of Enzymes as CatalystsSPIT ~ SALIVA

Enzymes and Reactions

Characteristics of Enzymes #2

Enzymes are site specific, only react at certain location

One enzyme = One job

How Enzymes Work

What does this mean?????

Lactose Intolerance

Environmental Effects on Enzymes

1. Temperature • High

Temperatures can denature enzymes

• Denature means lose shape.

Environmental Effects on Enzymes

1. Temperature • Low

Temperatures cause enzymes to move slowly

• Decreasing

enzyme activity

http://lpscience.fatcow.com/jwanamaker/animations/Enzyme%20activity.html

Environmental Effects on Enzymes

1. pH • Dramatic

changes in the pH of a solution can denature an enzyme

• Decreasing

enzyme activity

DigestionNerves

Digestion Papaya’s

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Classification of enzymes and properties of enzymes

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enzymes

Documents

example of enzymes

chemical reactions

jobhow enzymes workwhat

certain locationone

enzymesph dramatic changes

living thingscells

use of proteins

biological catalystswhat