3.5 Making Use of Enzymes Flashcards Preview

GCSE Biology 2.3 Enzymes > 3.5 Making Use of Enzymes > Flashcards

Flashcards in 3.5 Making Use of Enzymes Deck (26)
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1

Name an disadvantage of using microorganisms enzymes

Very expensive to produce

2

What enzymes do biological detergents use to digest food stains?

Protease and lipase

3

Why are biological detergents good the environment?

They are used at a lower temp than it already washing powder which saves energy and money on electricity

4

What enzymes are used to predigest some baby foods?

Protease for proteins

5

Which enzyme is used to convert glucose into fructose syrup?

Isomerase

6

What are the benefits of using fructose instead of glucose?

Fructose is much sweeter so less is needed in foods therefore the foods are not as fattening

7

What enzymes are used to convert starch into sugar syrups for use in foods?

Carbohydrases

8

How are enzymes used in industry?

They bring about reactions at a normal temp or pressure

9

What is the benefit of using enzymes in industry?

They don't require expensive equipment and a lot of energy to produce high temps and pressures

10

Why are enzymes in biological washing powders cased in little tiny capsules?

Many factory staff developed allergies triggered by proteins in the enzyme dust in the air

11

Despite the bad publicity, what did the enzyme allergy case prove?

That biological detergents don't seem to be a major cause of skin problems

12

Why do some people worry about the waste water of the washing machines (carrying enzymes) going into the sea?

The enzymes will start to catalyse reactions in the sea water that we don't want to happen

13

Why might biological detergents not be good at killing pathogens on clothes?

They have to be used at low temps so the pathogens might not be killed in the wash

14

Name a use of enzymes in diagnosis.

Checking for liver faults or damages

15

How do doctors use enzymes to diagnose liver damages?

Liver enzymes may leak into your bloodstream so the doctors test blood for liver enzymes

16

How are enzymes used to test people for diabetes?

Use a chemical indicator to check for enzymes in urine (there would be a colour change in the presence of glucose)

17

Why do diabetics have glucose in their urine?

They have too much glucose in their blood so need to release some

18

How can enzymes be used to help a damaged pancreas?

If the pancreas is damaged it cannot make enzymes so you take extra enzymes, particular lipase, to digest food. Enzymes are in capsules so they don't dissolve in the stomach

19

How can enzymes help you if you have a heart attack?

An enzyme called streptokinase is injected into your blood to dissolve clots in arteries of the heart wall and reduce damage to the heart

20

How can enzymes kill blood cancer cells?

The blood cancer cells need only one type of amino acid from your body fluids to survive. The enzymes speed up the breakdown of that one amino acid so therefore the cancer cell cannot get any of that amino acid and it will die. But normal cells make the amino acids as well so they aren't affected

21

Name another test to see if the liver is working properly.

The hydrogen peroxide test

22

What is the hydrogen peroxide test?

Placing Apple liver potato and Tuna into 15ml of hydrogen peroxide we can see that the enzymes in the liver have more suitable enzymes for digesting the hydrogen peroxide than the potato because the liver is frothing more so it is working faster

23

Why do protease need a lower pH in the stomach?

The bacteria killed by the low pH in the stomach makes the protease a better

24

What is the stomach mucus lining for?

To stop the stomach dissolving

25

What does bile do to fats?

Emulsified them so they don't go into the bloodstream

26

Name an advantage of using microorganisms enzymes

Have many uses in industry