Transport in Mammals

Which ion combines with haemoglobin to form hemoglobinic acid?

• Hydrogen ion
• Oxygen ion
• Carbon dioxide ion
• Nitrogen ion

Reorder the pathway taken by the blood starting from the right atrium.

• aorta

• tricuspid valve

• pulmonary artery

• pulmonary vein

• left atrium

Match the following.

• hydrogencarbonate ion

• an enzyme

• carbonic anhydrase

• the gas that forms carbaminohaemoglobin with haemoglobin

• carbon dioxide

• most form of carbon dioxide transported in the blood

• squamous

• a toxic gas

• carbon monoxide

• type of endothelium in capillaries

Aorta and major arteries are more ​ (a)   than the arterioles which are more ​ (b)   . The blood pressure in those blood vessels are ​ (c)   and the walls must be strong enough to ​ (d)   the blood pressure. Valves are absent in these blood vessels but there are plenty of them in ​ (e)   .

• elastic
• muscular
• strong
• withstand
• veins
• capillaries
• pump

Choose the component absent in tissue fluid but present in the plasma.

• albumin

• water

• glucose

• carbon dioxide

Which pH creates more affinity of haemoglobin to oxygen?

• 7.35

• 7.45

Which ions diffuse into the red blood cell as hydrogencarbonate ions diffuse out of it?

• Sodium ions
• Potassium ions
• Chloride ions
• Calcium ions

Tags

NGSS.HS-LS1-3

How many maximum oxygen molecules can a haemoglobin carry?

If the left atrioventricular valve in the heart does not close completely it results in blood flowing back into the atrium during ventricular systole.

What would be the immediate effect of this back flow?

• blood flowing from the heart carries less oxygen because less blood enters the lungs

• diastolic pressure in the left ventricle falls because less blood enters the pulmonary artery

• lower systolic pressure in the left atrium and less blood enters the pulmonary artery

• raised pressure in the left atrium and less blood enters the aorta

Which statement about the blood flow in the cardiac cycle is correct?

• Blood flows into the aorta through the semilunar valve due to contraction of the right ventricle.

• Blood flows into the left atrium through the pulmonary artery when the wall of the left atrium relaxes.

• Blood flows into the right atrium through the vena cava when the wall of the right atrium relaxes.

• Blood flows into the right ventricle through the semilunar valve due to contraction of the right atrium.