enzymes

Question 1

What do enzymes do?

Answer 1

They speed up chemical reactions in living cells

Question 2

Are enzymes in all living cells?

Answer 2

Yes

Question 3

What are enzymes made up of?

Answer 3

Amino acids

Question 4

What allows cells to function in low temperatures?

Answer 4

Enzymes

Question 5

Do enzymes change after reactions?

Answer 5

no

Question 6

can enzymes be used multiple times?

Answer 6

Yes

Question 7

Each enzyme only works with one…

Answer 7

Substrate

Question 8

What are enzymes specific to?

Answer 8

Substrates

Question 9

fill in the blanks:
Enzymes are special _______ that are folded in a way that exposes their _____ _____ where the substrate ____

Answer 9

proteins
active site
binds

Question 10

enzymes usually end in the letters…

Answer 10

ASE

Question 11

What is a general name given to a biological catalyst

Answer 11

Enzymes

Question 12

State TWO biological properties of a biological catalyst

Answer 12

It speeds up chemical reactions
Enzymes don’t start a reaction it only speeds it up

Question 13

where are enzymes found in a living organism

Answer 13

Enzymes are found in all living cells

Question 14

Of what type of substance are enzyme molecules composed?

Answer 14

Amino acids

Question 14

Briefly explain why enzymes are needed for the function of living cells

Answer 14

They make chemical reactions happen faster than they would without enzymes

Question 15

What term is used to refer to a substance upon which an enzyme acts

Answer 15

A substrate

Question 16

What does a substrate do to an enzyme

Answer 16

If it’s the right one it binds to its active site

Question 17

Why is an enzyme said to be specific in its relationship with a substrate

Answer 17

Because different enzymes have different shaped active sites

Question 18

What’s a metaphor for substrates and enzymes connecting

Answer 18

Like a key and a lock

Question 19

What type of reaction is this?:
substrate broken down to form a product

Answer 19

degradation reaction

Question 20

What is made out of a substrate and an enzyme

Answer 20

Products

Question 21

What type of reaction is this?:
Substrate built to form product

Answer 21

synthesis reaction

Question 22

T or F
enzymes are proteins

Answer 22

True

Question 23

T or F
Enzymes are catalysts

Answer 23

True

Question 24

T or F The shape of an enzyme is critical to its shape

Answer 24

True

Question 25

T or F An enzymes shape is determined by the sequence of carbohydrates in its structure

Answer 25

False, it’s the amino acid structure

Question 26

T or F Enzymes are non-specific

Answer 26

False, enzymes are specific to its substrate because in order for the enzyme-substrate complex to happen the substrate has to be right for the active site of the enzyme

Question 27

State the function of enzymes

Answer 27

Enzymes are to speed up chemical reactions in living cells

Question 28

State what's meant by active site and substrate

Answer 28

An active site is a groove on an enzyme that a substrate binds with to facilitate the catalysed chemical reaction

Question 29

Describe how enzymes work (lock and key)

Answer 29

Enzymes work like a biological catalyst it speeds up the chemical reactions in living cells. By joining with a specific substrate to its active site. The enzyme does not change or gets used up in this process it always stays the same

Question 30

Factors that affect the rate of reaction include:

Answer 30

temperature pH

Question 31

What happens to an enzyme when the temp. & pH change sufficiently beyond an enzymes optimum?

Answer 31

The shape of the enzyme changes irreversibly denaturing it

Question 32

what does it mean when an enzyme changes shape irreversibly?

Answer 32

It’s denatured

Question 33

what is this?: The state of an enzyme when it has been irreversibly damaged and changed shape

Answer 33

Denatured

Question 34

What is this?: The part of the enzyme into which the reactant molecule fits

Answer 34

Active site

Question 35

What’s a substrate?

Answer 35

A molecule reactant

Question 36

What is this?: The temp. and pH at which an enzyme- catalysed reaction proceeds at a faster rate

Answer 36

optimum

Question 37

The molecule that binds and reacts with the enzyme

Answer 37

Reactant

Question 38

what is a catalyst?

Answer 38

it’s a substance that speeds up chemical reactions

Question 39

What are enzymes

Answer 39

Enzymes are biological catalysts that speed up chemical reactions in living cells

Question 39

Why are catalysts used over and over again?

Answer 39

Because catalysts don’t change after making a product, so u can re-use it multiple times

Question 40

What are enzymes made of?

Answer 40

They are made of amino acids linked together in one or more chains

Question 41

What is optimum?

Answer 41

it’s enzymes working best at only one particular temp. & pH