B3 Biological molecules

Question 1

Carbohydrates

Answer 1

They are sugar molecules and one of the 3 main nutrients found in food

Question 2

Fats

Answer 2

Fats means any ester of fatty acids, or a mixture of such compounds

Question 3

Proteins

Answer 3

A molecule made up of amino acids. Proteins are needed for the body to function properly

Question 4

Starch

Answer 4

A substance found in plants. It contains sugar molecules joined chemically. It is found in high levels in foods such as potatoes, rice, corn, and wheat

Question 5

Glycogen

Answer 5

a substance deposited in bodily tissues as a store of carbohydrates. It is a polysaccharide which forms glucose on hydrolysis

Question 6

Amino acids

Answer 6

Amino acids are molecules that combine to form proteins

Question 7

Fatty acids

Answer 7

atty acids are the building blocks of the fat in our bodies and in the food we eat

Question 8

Iodine solution

Answer 8

Iodine solution Is to test if starch is present in the solution or thing

Question 9

Benedict’s solution

Answer 9

Benedict’s solution Is to test if reducing sugars are present in the solution or thing

Question 10

Biuret test

Answer 10

Biuret Test is to check if proteins are present

Question 11

Ethanol emulsion test

Answer 11

Ethanol emulsion test Is to see if fats and oils are present

Question 12

Solvent

Answer 12

The liquid in which something dissolves to make a solution

Question 13

Solution

Answer 13

A mixture of two or more elements which is usually dissolved

Question 14

Solute

Answer 14

The solid being dissolved in the solvent

Question 15

Vitamins

Answer 15

vitamins help you resist infections and keep your nerves healthy, while others may help your body get energy from food or help your blood clot properly

Question 16

minerals

Answer 16

calcium and iron are examples and they are needed to keep bones and blood working properly

Question 17

fibre

Answer 17

Is needed to prevent constipation