Specialised Cells

Question 1

When referring to stem cells what does unipotent mean

Answer 1

Cannot differentiate, but are capable of self renewal

Question 2

When referring to stem cells what does multipotent mean

Answer 2

Can differentiate into a number of closely related cell types within a certain type of tissue

Question 3

When referring to stem cells what does pluripotent mean

Answer 3

Can form any cell type but no the whole organism

Question 4

When referring to stem cells what does totipotent mean

Answer 4

Are able to differentiate into any type of cell found in the body and into extra embryonic cells such as those in the placenta

Question 5

What is a stem cell

Answer 5

• a cell that has not yet become specialised
• can replicate many times (self renewal)
• ha potential to become specialised (i.e. different types of cell)

Question 6

How is squamous epithelial tissue specialised

Answer 6

• single layer of flat cells in a row that line the surface

- contains a basement membrane at the bottom found in the alveoli/capillaries for gas exchange

Question 7

How are ciliated epithelium tissue specialised

Answer 7

• layer of cells covered in cilia
• allows things to be moved
• e.g. mucus being moved in the trachea