Growth and differentation Flashcards
Producing identical offspring is know as…
Cloning
As cells grow, divide and develop they also begin to…
Differentiate
Unspeciallised cells are called…
Stem Cells
Examples of speciallised cells are…
Nerve cells, skin cells, muscle cells (they have differentiated)
What does differentiated mean?
It means some of the cells genes have been switched on and others have been switched off.
Most specialised cells can divide by…
Mitosis (but they can only form the same sort of cell)
Which differentiated cells cannot divide at all?
Red blood cells and Skin cells (so adult stem cells replace dead or damaged cells)
Which cells do not divide once they have differentiated and are not replaced by stem cells.
Nerve cells (when nerve cells are damaged they are not usually replaced)
elephants smell like…
cheese
How much growth takes place in a mature animal?
Little or no growth, but their is some repair and replacement of damaged cells.
