cell specialisation and differentiation

Question 1

plant info

Answer 1

plant cells cells can differentiate throughout thheir lives meaning that they are always able create new tissues

Question 2

animal info

Answer 2

most animal cells differentiate early on in their development
mature animals cells divide to replace cells and repair tissues
rarely create tissues
differentiate in embryo
have to reproduce sexually

Question 3

differention happens when cells…..

Answer 3

aquire different sub-cellular structures

Question 4

bacterial cells

Answer 4

bacteria examples of prokaryotic cells
bacteria contains
cytoplasm
cell wall and cell membrane
flagella ( whhip like structures used for movemnt)
plasmids

Question 5

plant cuttings example

Answer 5

if you cut a small section of a plant stem and plant it some of the cells will differentiate creating new root tissue

Question 6

differentiation?

Answer 6

cell develops new sub-cellular structures to let it perform a specific function when this happens the cell is specialised

Question 7

Embryos

Answer 7

cell differentiation happens during an organisms development
organisms start at one cell
cells divide to form embryos that differentiate to produce cells that can perform all body functions

Question 8

sperm cells

Answer 8

specialised by fertilised egg
to do that they need to travel long distances to their size
then they break through the egg cell and fertilise it

Question 9

inside sperm cells

Answer 9

acrosome -at the tip of the head contains enzyme to penetrate (break into the cell)
middle section - is the part which contains mitochondria to provide the cell with energy so it can travel its long distance to the egg
Tail is used for the cells motion ables the sperm to travel to the egg cell
Head - contains the sperm cells nucleus. The nucleus carries on half of the organisms genetic material whichh combines with the egg cells half of genetic material and then fertilise it