Enzymes Flashcards Preview

S3 Biology > Enzymes > Flashcards

Flashcards in Enzymes Deck (16)
Loading flashcards...
1

What are enzymes made from?

Protein

2

Where are enzymes made in a cell?

Ribosomes

3

What does the term optimum mean?

The condition at which the enzyme is most active.

4

What is the optimum temperature for enzymes?

37-40 (check the graph)

5

What term is used to describe the fact that an enzyme will only react with one substrate?

Specific

6

What name is given to the chemical the enzyme reacts with?

Substrate

7

Which part of the enzyme does the substrate have a complementary shape with?

Active site

8

Why are enzymes described as biological catalysts?

1. They speed up chemical reactions
2. They do not get used up
3. They are found inside living cells

9

What term is used to describe a reaction where the product is smaller than the substrate?

Degradation

10

What term is used to describe a reaction where the product is larger than the substrate?

Synthesis

11

Give an example of a degradation reaction.

SAM
Starch is broken down by amylase to produce maltose

12

Give an example of a synthesis reaction.

GPS
Glucose-1-phosphate is built up by phosphorylase to produce starch.

13

What happens to an enzyme when it becomes too hot?

Denatures

14

What does the term denatured mean?

A change in the shape of the enzymes active site

15

What name is given to the chemical made at the end of the reaction?

Product

16

What is the optimum pH for enzymes?

Depends on the enzyme