WorksheetsTransport in Mammals
Total questions: 25
Worksheet time: 13mins
What is the main job of the heart?
To pump blood around the body.
To send food to the small intestines.
To break down food.
To give energy to the body.
How does the heart function?
It pumps blood first to the lungs, then back to the heart, and finally around the rest of the body.
It pumps blood first to the rest of the body, then back to the lungs, and finally to the heart.
It pumps blood around the rest of the body, then back to the heart, and finally to the lungs.
What type of cells are the body's defenders against infection?
Leucocytes
Erythrocytes
Blastocytes
Plasmacytes
Which of the following plays a crucial role in the life-saving process of clotting blood?
Phagocytes
Leucocytes
Erythrocytes
Platelets
Which of the following statements about oxygen combining with haemoglobin is true?
All oxygen molecules that combine stop the haemoglobin molecule from changing shape.
Each haem group can combine with four oxygen molecules.
The first oxygen molecule that combines does not affect the shape of haemoglobin.
It becomes easier for the third oxygen molecule to combine after the second one has combined.
What happens when athletes train at high altitudes?
Higher concentrations of carbon dioxide stimulate greater oxygen dissociation.
Lower concentrations of oxygen stimulate the uptake of more oxygen by red blood cells.
Lower partial pressures of oxygen stimulate higher production of red blood cells.
The diagram below shows the front view of a human heart.
Letters P, Q, R and S indicate the different chambers of the heart.
What is the correct sequence in which a blood cell returning from other parts of the body passes through the four chambers of the heart?
R-S-P-Q
Q-S-R-P
P-R-Q-S
S-R-P-Q
How is carbon dioxide primarily transported to the lungs?
As hydrogencarbonate ions in the plasma
Dissolved in the plasma
As carbonic acid in red blood cells
As hydrogencarbonate ions in red blood cells
Which chamber of the heart has the thickest walls?
left atrium
left ventricle
right atrium
right ventricle
Which row shows the blood pressures in an artery, a capillary and a vein?
A
B
C
D
What is a difference between plasma and tissue fluid?
A
B
C
D
What is the sequence of contractions in one heart beat?
Left atrium and left ventricle together, then a pause, followed by right atrium and right ventricle together
Left atrium, left ventricle, right atrium, right ventricle, and then a pause
Right atrium and left atrium together, right ventricle and left ventricle together, and then a pause
Right atrium, right ventricle, left atrium, left ventricle, and then a pause
Which substances are dissolved in human blood plasma?
carbon dioxide, haemoglobin and glucose
carbon dioxide, oxygen and haemoglobin
glucose, hormones and urea
oxygen, urea and starch
Which blood vessel has a high carbon dioxide concentration, a low oxygen concentration and a high blood pressure?
aorta
pulmonary artery
pulmonary vein
vena cava
What is the fluid in the blood called?
lymph
mucus
plasma
tissue fluid
Which statement is correct for most veins in the human body?
They carry blood at high pressure.
They have a pulse.
They always take blood away from the heart.
They have valves.
Why is the circulatory system of mammals described as a double circulation?
Blood flows firstly through arteries and then through veins.
Blood flows through the heart twice on one complete circuit of the body.
In the heart, blood flows firstly through atria and then through ventricles.
The atria and the ventricles contract alternately.
Which substance is transported by haemoglobin?
nitrogen
oxygen
urea
water
In a person with a low platelet level, which process is slower than normal?
antibody formation
blood clotting
oxygen carriage
phagocytosis
What is the correct sequence for blood being pumped from the heart to the lungs?
left atrium → left ventricle → pulmonary artery
left atrium → left ventricle → pulmonary vein
right atrium → right ventricle → pulmonary artery
right atrium → right ventricle → pulmonary vein
What is a method of reducing the risk of coronary heart disease?
angioplasty
by-pass’ surgery
controlled exercise
inserting a stent
