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How has red blood cell adapted to membrane surface area?
The red blood cell's biconcave shape increases its surface area for diffusion. The lack of a nucleus makes this shape possible.
Why is the small size of the capillaries surrounding the alveoli important physiologically?
The size of the capillary is smaller than the red blood cells. The exact reason for this is not known. The red blood cells get folded when they pass through the capillaries. This phenomena buy time for the blood to flow through the capillaries, probably. Secondly it will create larger surface area of total number of capillaries to flow the same amount of blood. You have better exchange of gases through larger surface area.
Why does a red blood cell have a large surface area?
To hold more oxygen.
Which type of red blood cells lack a nucleus?
The red blood cells. This is because it will increase surface area for the absorption of oxygen.
Why are red blood cells concave?
Pretty sure it's to increase the surface area
Why do red blood cells need a hole in them?
more surface area to absorb oxygen
If red giants are cool stars why are they so bright?
Red giant stars emit less light per square meter of surface area than smaller, hotter stars, but their larger size means they have a larger surface area from which to emit light, so they emit more light overall.
Why are red giants so bright if they are so cool?
Red giant stars emit less light per square meter of surface area than smaller, hotter stars, but their larger size means they have a larger surface area from which to emit light, so they emit more light overall.
Why is there a dip in the centre of a red blood cell?
To increase the surface area so that the blood cell can carry more haemoglobin and, therefore, oxygen.
How does the red blood cells help the cell carry out its function?
the dip creates a larger surface area, meaning more oxygen can be transported. it also means the cell is more flexible and can squeeze through capillary walls.
What advantage does the red blood cells has for not containing organelles?
increase surface area so that advantage in containing haemoglobin
Why are red blood cells disc shape?
To optimise the surface area available for the bonding of oxygen and haemoglobin, to form oxyhaemaglobin. Individuals with sickle cell anaemia, i.e. those with red blood cells which are not disk shaped have a reduced capacity to carry oxygen in their blood.
