Unit 2: Enzymes Flashcards

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1
Q

the part of the enzyme that does all the work

A

active site

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2
Q

The suffix that means “enzyme”

A

-zyme or -ase Examples: lysozyme, catalase

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3
Q

the molecules that enter the active site

A

the substrate

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4
Q

the molecules that exit the active site

A

the product

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5
Q

What kind of molecules are enzymes?

A

proteins

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6
Q

What are the functions of enzymes?

A

to speed up chemical reactions, which means: to build or break molecules

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7
Q

How can enzymes be destroyed?

A

by heat or acid, which denatures them

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8
Q

How are enzymes similar to inorganic catalysts?

A

They both speed up chemical reactions (building or breaking molecules)

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9
Q

What is the two word definition of an enzyme?

A

It is a protein catalyst

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10
Q

How are enzymes different from inorganic catalysts?

A

Enzymes are bigger molecules. Enzymes are more fragile (can be denatured) Enzymes are more powerful (faster reactions)

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11
Q

What does it mean if an enzyme is denatured?

A

The enzyme is unraveled. Without its shape, it is just a long chain of amino acids. Since it no longer has an active site, it will no longer function.

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12
Q

What is the “lock” and what is the “key”?

A

The enzyme is the lock, and the substrate fits into the enzyme like a key into the lock.

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13
Q

The “pocket” in which the enzyme does its work.

A

the active site

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14
Q

What is the purple molecule?

A

The enzyme

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15
Q

The green molecules

A

the products

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16
Q

The lactose

A

substrate

17
Q

the place where the orange, red, and blue pieces touch

A

the active site

18
Q

What is this picture showing?

How does it happen?

A

The protein unraveled = denatured

by exposure to heat or acid

19
Q

Why does your body heat up when you are sick?

Why is a high fever dangerous?

A

Your body is trying to denature the germ’s proteins.

The high temperatures can denature your enzymes, killing you.

20
Q

Why does enzyme activity drop to nothing at 40oC?

A

The enzymes have been denatured.