specialised cells

Question 1

How are red bloods cells specialised

Answer 1

• biconcave shape which increases the surface area
• means that the rate which oxygen moves in and out of the cell is faster
• shape also makes them flexible

Question 2

How are neutrophils (WBC) specialised?

Answer 2

• have a multi lobed nucleus which enables flexibility
• means they can squeeze through small gaps when travelling to the site of infection
  -part of a non specific immune system
  -engulf pathogens
  -common

Question 3

how is Squamous epithelial tissue specialised

Answer 3

• thin smooth layer that is flat and makes it ideal for rapid diffusion

Question 4

How is alveoli adapted for diffusion

Answer 4

• large surface area as it consists of one cell thick layer of squamous epithelium
• means SA is larger and thinner making the diffusion distance quicker
  -also a large number of alveoli

Question 5

How are Lymphocytes adapted

Answer 5

-have T and B cells
-T cells destroyed infected cells
- B cells produce antibodies
- large nucleus
-smaller than neutrophils

Question 6

What do lympocytes and neutrophils have in common?

Answer 6

• both involved in defence against pathogens
• available in blood plasma
• made in bone marrow