Specialised Cells

Question 1

As a cell differentiates:

Answer 1

• it may change shape

- different sub-cellular structures develop to let it carry out a specific function

Question 2

Specialised animal cells examples

Answer 2

-sperm, nerve and muscle cells

Question 3

What’s an acrosome (sperm)

Answer 3

Contains enzymes to allow sperm to penetrate the outer layer of egg

Question 4

How is a xylem in a plant cell specialised

Answer 4

• cells are arranged end to end but end walls break down to form hollow tubes
• cell wall of cells is strengthened by LIGNIN

Question 5

how is the phloem in plant cells specialised

Answer 5

• end walls of cells allow sugars through but SUPPORT TUBES

- arranged end to end into tubes

Question 6

How is a root hair cell specialised

Answer 6

• lots of mitochondria for active transport of minerals

- long projection to increase the SA to absorb water and minerals

Question 7

If the cells are specialised, they become more efficient at this job but..

Answer 7

May lose their ability to do other jobs