Blood

Question 1

What is blood?

Answer 1

Blood is a tissue , which means it is a group of similar cells that act work together to perform a similar function.

Question 2

Blood is made up of a fluid called plasma , what are the three parts of the plasma?

Answer 2

All three are suspended (not totally dissolved in a fluid )
-White blood cells
-Red blood cells
-Platelets

Question 3

Do platelets have a nucleus or not?

Answer 3

Platelets do not have a nucleus.

Question 4

Platelets are responsible for triggering ____________ at the sites of wounds (this is the function of platelets).

Answer 4

Blood clotting

Question 5

What are White blood cells responsible for?

Answer 5

For defending against infection.

Question 6

What are Red blood cells responsible for/ transport?

Answer 6

For transporting oxygen from the lungs to all body cells.

Question 7

What are Platelets responsible for?

Answer 7

For triggering blood clotting at the sites of wounds.

Question 8

What are the red blood cell features?

Answer 8

-No nucleus (This frees up more room for haemoglobin , maximises the amount of oxygen that they can carry.

-Haemogoblin (Binds with oxygen in the lungs , carries oxygen which will then be released to the body cells to be used for respiration.)

-Small size (Red blood cells are small so that they can pass through tiny capillaries.)

-Biconcave shape (creates a large surface area and allows for the rapid diffusion of oxygen.)

Question 9

What would happen if red blood cells had a nucleus?

Answer 9

There would be les space for haemogoblin and oxygen

Question 10

What are white blood cells features?

Answer 10

• Has a nucleus

-Can change shape (able to squeeze through the walls of blood vessels into body tissues and to engulf harmful microorganisms.)