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4 questions
What is the job of a red blood cell?
To carry electrical messages
To absorb water from the soil
To carry oxygen around the body
To photosynthesise
Which feature does not apply to red blood cells?
Large vacuole
Donut shape
Contains haemoglobin
Has no nucleus
What is haemoglobin?
A protein that can attach to oxygen
A chloroplast
A fatty layer of insulation
A type of goblin from Harry Potter
Which feature allows a red blood cell to carry as much haemoglobin as possible?
Its donut shape
Not having a nucleus
Being small and flexible
Having chloroplasts
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