Standard Grade Science

The part of the human body shown by the letter G is called
1. a bronchus
2. a cartilage ring
3. a bronchiole
4. the diaphragm
Air is taken into the lungs when
1. the ribcage moves upwards and outwards, increasing the volume of the chest cavity and decreasing the pressure on the lungs.
2. the ribcage moves upwards and outwards, increasing the volume of the chest cavity and increasing the pressure on the lungs.
3. the ribcage presses down on the lungs, reducing the volume of the chest cavity and decreasing the pressure on the lungs.
4. the ribcage presses down on the lungs, reducing the volume of the chest cavity and increasing the pressure on the lungs.
The chemical in tobacco smoke that stops haemoglobin from carrying oxygen is
1. tar
2. nicotine
3. carbon monoxide
4. carbon dioxide
Increased numbers of accidents and more violent behaviour are both linked to
1. people drinking too much alcohol
2. people having an unhealthy diet
3. people not exercising enough
4. people smoking
A heart attack is caused by
1. the left ventricle becoming blocked
2. the right atrium becoming blocked
3. the coronary artery becoming blocked
Carbon dioxide in the blood is carried by a released from the
1. plasma
2. white cells
3. platelets
4. red cells
The two waste products removed during recovery time are
1. water and carbon dioxide
2. water and lactic acid
3. lactic acid and carbon dioxide
4. water and oxygen
The chemical in tobacco smoke that is addictive is
1. tar
2. carbon monoxide
3. carbon dioxide
4. nicotine
The blood vessels which are very thin walled to allow exchange of gases, food and waste with body cells are
1. capillaries
2. arteries
3. veins
The cilia in the respiratory system
1. are tiny beating hairs which move mucus out of the lungs
2. are responsible for keeping the windpipe open
3. are cells which produce mucus
4. are the two large tubes carrying air to each lung
The part of the blood which destroys bacteria is
1. the white cells
2. the plasma
3. the platelets
4. the red cells
Haemoglobin is the substance in
1. red cells that allow them to carry carbon dioxide
2. red cells that allows them to carry oxygen.
3. white cells that allows them to carry carbon dioxide
4. white cells that allows them to carry oxygen.
The chemical in tobacco smoke that coats the air sacs so that gases cannot be exchanged properly is
1. nicotine
2. carbon dioxide
3. tar
4. carbon monoxide
In the diagram of the heart shown below the auricles (or atria) are shown by the letters
1. B and D
2. A and B
3. A and C
4. C and D
The chamber in the heart that pumps blood from the heart to the lungs is called the
1. left auricle (or atrium)
2. left ventricle
3. right ventricle
4. right auricle (or atrium)
The muscle wall round the left ventricle is thicker than round any other chamber in the heart as it
1. pumps blood at low pressure to the lungs
2. pumps blood at high pressure round the body
3. pumps blood at high pressure to the lungs
4. pumps blood at low pressure to the body
The part of the respiratory system that is surrounded by capillaries for gaseous exchange is called
1. the cartilage rings
2. the alveoli
3. the bronchi
4. the bronchioles
The diagram below shows two different types of blood vessel

Which statement about these blood vessels is correct?
1. A is a vein and B is an artery
2. A is an artery and B is a vein
3. A is a vein and B is a capillary
4. A is an vein and B is a capillary
The part of the respiratory system that keeps the windpipe open is called
1. the cartilage rings
2. the alveoli
3. the bronchioles
4. the ribs
The part of the blood which seals cuts by clotting is
1. the white cells
2. the plasma
3. the platelets
4. the red cells
The part of the respiratory system that traps dirt and stops it entering the lungs is
1. bronchus
2. cartilage rings
3. cilia
4. mucus
The part of the blood which carries dissolved food, carbon dioxide and heat round the body is
1. the plasma
2. the red cells
3. the platelets
4. the white cells
In the diagram of the heart shown below, which letter shows the position of the left ventricle?
1. Letter B
2. Letter C
3. Letter A
4. Letter D
If the coronary artery becomes blocked by a blood clot or a fat deposit
1. red cells can no longer carry oxygen
2. blood flows the wrong way through the heart
3. no blood will flow out of the heart to the lungs
4. oxygen cannot get to the heart muscle.
The parts of the body most likely to be damaged by regularly drinking too much alcohol are
1. the heart and kidneys
2. the heart and lungs
3. the kidneys and lungs
4. the liver and kidneys

Standard Grade Science

Healthy Living (Credit)