5. Enzymes Flashcards

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1
Q

catalyst

A

a substance that increases the rate of a chemical reaction and is not changed by the reaction

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2
Q

enzymes

A

proteins that are involved in all metabolic reactions, where they function as biological catalysts

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3
Q

why are enzymes important in all living organisms

A

maintain reaction speeds of all metabolic reactions at a rate that can sustain life.

Without enzymes, reactions would take place very slowly or not at all.

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4
Q

Enzyme action

A

the shape of the active site of an enzyme is complementary to its substrate so that substrate fits into active site and enzyme-substrate complex is formed and products are formed.

they are specific

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5
Q

effect of changes in temperature on enzyme

A

optimum temperature

kinetic energy increases

frequency of effective collisions increases

denaturation- shape of active site changes so substrate can no longer fit and bind and enzyme-substrate complex won’t be formed

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6
Q

effect of changes in pH on enzyme

A

denaturation- shape of active site changes so substrate can no longer fit and bind and enzyme-substrate complex won’t be formed

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