Blood

Question 1

Blood is a ________ consisting of plasma, in which ______ blood cells, ________ blood cells and _________ are suspended

Answer 1

Tissue
Red
White
Platelets

Question 2

What is the function of red blood cells?

Answer 2

To carry oxygen around the body

Question 3

What is the function of white blood cells?

Answer 3

To fight diseases by invading microbes

Question 4

What is the function of platelets?

Answer 4

Blood clotting.
They make fibres that form a net at the site of a cut. Red blood cells get trapped in the net to form a clot. The clot dries to form a scab

Question 5

What is the function of plasma?

Answer 5

Plasma transports dissolved substances around the body, including:
-Hormones
-Nutrients, such as water, glucose, amino acids, minerals and vitamins
-Waste substances, such as carbon dioxide and urea
Red and white blood cells and platelets

Question 6

How have red blood cells adapted to their function?

Answer 6

They are smaller than white blood cells
They have no nucleus so they can carry more haemoglobin
Biconcave shape-maximise surface area for oxygen absorption

Question 7

How have white blood cells adapted to their function?

Answer 7

Can change shape