The blood

Question 1

What colour is blood without the red blood cells?

Answer 1

Pale yellow

Question 2

What are the components of blood?

Answer 2

serum ( the liquid), red blood cells, white blood cells and platelets.

Question 3

What is the main function of red blood cells?

Answer 3

To carry oxygen.

Question 4

What features of red blood cells are there that helps it do it’s main function?

Answer 4

1. They contain haemoglobin which is a red protein that combines with oxygen.
2. They have a the shape of a biconcave to maximize their surface area for oxygen absorption
3. They have no nucleus so they can contain more haemoglobin

Question 5

What are white blood cells part of?

Answer 5

White blood cells are part of the immune system

Question 6

What are platelets and why are they important?

Answer 6

Platelets are fragments of cells and they are important for clotting.