Biology End Of Year Y8

Question 1

What substances are made during aerobic respiration?

Answer 1

Carbon dioxide and water

Question 2

glucose+oxygen->

Answer 2

carbon dioxide+water

Question 3

What is a carbon dioxide in terms of respiration?

Answer 3

A waste product

Question 4

Why can’t all the energy be released from glucose molecules in anaerobic respiration?

Answer 4

Because the oxidation is incomplete

Question 5

What is oxidation?

Answer 5

A chemical reaction that involves a substance coming into contact with oxygen

Question 6

What are the 5 food groups?

Answer 6

Fruit and veg, carbohydrates, proteins, dairy, lipids

Question 7

What do fruit and veg provide our bodies?

Answer 7

Vitamins and fibre

Question 8

What do carbohydrates provide our bodies?

Answer 8

Slow-release energy

Question 9

What do proteins provide our bodies?

Answer 9

Growth, bone repair and muscle building

Question 10

What does diary provide our bodies?

Answer 10

Calcium

Question 11

Why do we need calcium from dairy?

Answer 11

To strengthen teeth and bones

Question 12

Why do we need lipids?

Answer 12

To store energy

Question 13

As well as a healthy diet, what else do we need?

Answer 13

Water and exercise

Question 14

What do we need to add to food to test for starch?

Answer 14

Iodine

Question 15

What will happen if a test for starch is positive?

Answer 15

It will go blue/black

Question 16

What do we need to do to test for glucose?

Answer 16

Add a few drops of Benedict’s and then put the test tube in a hot water bath for 5 minutes

Question 17

What will happen if a test for glucose is positive?

Answer 17

It will go green to orange to brick red precipitate

Question 18

What do we need to do to test for protein?

Answer 18

Add a few drops of Biruet working solution

Question 19

What will happen if a test for protein is positive?

Answer 19

It will go purple

Question 20

What do we need to do to test for lipids?

Answer 20

Add 2cm cubed of ethanol and shake, add 2cm cubed of water and shake again and allow to settle

Question 21

What will happen if a test for lipids is positive?

Answer 21

It will go milky white on top

Question 22

What are the four types of teeth?

Answer 22

Molars, premolars, incisors and canines

Question 23

What type of teeth form at 6 months old?

Answer 23

Milk teeth

Question 24

When do milk teeth fall out?

Answer 24

At 5 years old

Question 25

What do we need to do to keep teeth healthy?

Answer 25

Brush twice a day, floss between teeth, eat less sugary foods and go to the dentist

Question 26

What is the outer shell that covers the tooth?

Answer 26

Enamel

Question 27

What is the hollow part of the tooth that contain blood vessels and nerves?

Answer 27

The pulp cavity

Question 28

What has tiny tubes that goes from the pulp cavity to the blood capillaries?

Answer 28

The dentine

Question 29

What do molars and premolars do?

Answer 29

To tear and grind food into small bits

Question 30

What do canines do?

Answer 30

Rip and tear food

Question 31

What do incisors do?

Answer 31

Chop and grind food into small bits

Question 32

What is tartar?

Answer 32

Plaque that has hardened over time

Question 33

What is gingivitis?

Answer 33

Gum disease

Question 34

What does the mouth do in digestion?

Answer 34

Break down the food and mix it with saliva enzymes

Question 35

What is the œsophages in the digestive system?

Answer 35

A tube that goes from the mouth to the stomach

Question 36

What does the liver do in the digestive system?

Answer 36

It releases bile into food to break down lipids

Question 37

What is the stomach and what does it do?

Answer 37

It is a muscular bag which mixes foods with acid

Question 38

What does the pancreas do in digestion?

Answer 38

It releases enzymes into the intestines to break down carbohydrates, proteins and lipids

Question 39

What does the small intestine do?

Answer 39

It digests lipids, carbohydrates and proteins are digested, with the nutrients from them being put into the blood

Question 40

What does the large intestine do?

Answer 40

It takes in food that cannot break down.

Question 41

What does the rectum do?

Answer 41

It stores indigestes food as faeces

Question 42

What do bones do?

Answer 42

Protect organs, especially the brain

Question 43

How many bones do adults have?

Answer 43

206

Question 44

What moves bones?

Answer 44

Muscles

Question 45

What keeps bones together?

Answer 45

Joints

Question 46

What do muscles work in?

Answer 46

Antagony

Question 47

What are the lungs protected by?

Answer 47

Ribs

Question 48

The air that your breathe goes down the trachea and through two tubes called the…

Answer 48

Bronchi

Question 49

At the end of the bronchi, you find two smaller tubes called…

Answer 49

Bronchioles

Question 50

What is at the end of the bronchioles?

Answer 50

Alveoli (air sacs)

Question 51

Where does gas exchange take place?

Answer 51

In the alveoli