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Flashcards in B2 Biology - Enzymes Deck (16)
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1

what is a catalyst?

a substance which increases the speed of reaction without being changed or used up in the reaction.

2

what are all proteins made up of? what can they act as?

chains of amino acids
act as structural components of tissues, hormones and antibodies

3

what happens if the temp. is too high for enzymes in a reaction?

some of the bonds holding the enzyme together may break destroying the enzymes special shape - denatured

4

what temp do enzymes work best at?

37^c

5

what pH is best for enzymes?

neutral pH 7

6

what does amylase do?

converts starch to sugars

7

where is amylase made? (3 places)

salivary glands
pancreas
small intestine

8

what does protease do? where is it made? (3 places)

converts proteins to amino acids
stomach
pancreas
small intestine

9

what does lipase do? where is it made? (2 places)

converts lipids into fatty acids and glycerol
pancreas
small intestine

10

how does bile neutralise acids in the stomach

bile is an alkalis, it neutralises the acid and makes conditions alkaine

11

what does the pancreas do?

produces protease, lipase and amylase, into the small intestine

12

what does the gall bladder do?

bile is stored beofre released into small intestine

13

what are some enzymes used for?

biological detergents and washing powders

14

why are enzymes used in baby food?

they help pre-digest some of the food, easier for baby to digest

15

enzymes in industry can be a disadvantage why? ( 3 reasons)

some ppl have allergies to enzymes
they can be expensive to produce
they can easily become denatured

16

why can enzymes be useful in industry? (3 reasons)

use low temp - less expensive and saves energy
you can continually use them - work for long time
they are biodegradable - less environmental problems