What is the transport role of red blood cells?
They transport oxygen around the body.
Cambridge IGCSE (9–1) Biology 0970 (Extended) (2026–2028) · 9.4
Revise Cambridge IGCSE (9–1) Biology 0970 (Extended) (2026–2028) specification point 9.4, Blood, with free active-recall flashcards. Flip through the set or review every question and answer below.
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What is the transport role of red blood cells?
They transport oxygen around the body.
What role does haemoglobin play in oxygen transport?
It binds oxygen for transport and releases it where needed.
What features distinguish red blood cells from white blood cells in photomicrographs and diagrams?
Red blood cells are small biconcave discs and lack a nucleus.
What are platelets, and what is their role when a blood vessel is damaged?
Platelets are small fragments carried in blood that help it clot.
How does a blood clot prevent further blood loss?
It seals the damaged area of the blood vessel.
How does a blood clot protect against pathogens?
It reduces their entry into the body.
What are the four components of blood?
Red blood cells, white blood cells, platelets and plasma.
What is blood plasma?
The liquid component of blood, which carries blood cells and platelets around the body.
What five types of dissolved substance does blood plasma carry around the body?
Ions, nutrients, urea, hormones and carbon dioxide.