B3

Question 1

Active site

Answer 1

Site on an enzyme where the reactants bind

Question 2

Amino acids

Answer 2

Molecules made up of carbon, hydrogen, oxygen and nitrogen that are building blocks of protein

Question 3

Amylase

Answer 3

Enzyme that speeds up the digestion of starch into sugars

Question 4

Bile

Answer 4

Neutralises stomach acid to give a high pH for the enzymes from the pancreas and small intestine to work well

Question 5

Carbonhydrases

Answer 5

Enzymes that speed up the break disn of carbonhydrates into simple sugars

Question 6

Carbonhydrates

Answer 6

Molecules that contain only carbon, hydrogen and oxygen. They provide the enegy for the metabolism and are found in food such as rice, potatoes and bread

Question 7

Catalyst

Answer 7

A substance that speeds up the rate of another reaction but is not uses or changed itself

Question 8

Denatured

Answer 8

The breakdown of the molecular structure of a protein so it no longer functions

Question 9

Digestive system

Answer 9

Organsystem where food is digested and absorbed

Question 10

Enzymes

Answer 10

Biological catalysts, usually proteins

Question 11

Fatty acids

Answer 11

Part of the structjre of a lipid molecule

Question 12

Glycerol

Answer 12

Part if tne structure of a lipid molecule

Question 13

Lipase

Answer 13

Enzymes that speed up th e breakdown of lipids onto fatty acids and glycerol

Question 14

Lipids

Answer 14

Inculde fats and oils and are found in foods such as butter, olive oil and crisps. They are made of carbon, hydrogen and oxygen

Question 15

Metabolism

Answer 15

The sum of all reactions taking place in a cell or the body of an organism

Question 16

Organ

Answer 16

Collection of different tissues working together to carry out specific functions

Question 17

Organ system

Answer 17

Group of organs that work together to carry out a specific functions and form organisms

Question 18

Proteases

Answer 18

Enzymes that speed up the breakdown of proteins into amino acids

Question 19

Proteins

Answer 19

Molecules that contain carbon, hydrogen and nitrogen and are made of long chains of amino acids. They are hsed for building the cells and tissues of the body and to form enzymes

Question 20

Simple sugars

Answer 20

Small carbonhydrate units, for example glucose

Question 21

Tissue

Answer 21

Group of specialised cells with similar structure and function