Question

cellular animals have levels of organisation what characteristic of cells makes this multicellular animals have levels of organisation what characteristic of cells makes this possible

Answer 1

Are there options to this? Or is it like free response?

Answer 2

Well first of all the levels are
Cells
Tissues
Organs
Organ systems
and finally Organism

I would say the fact that each cell has DNA (source of info/instructions)
Proteins as translated version of DNA basically
Its own organelles responsible for different functions
its own regulatory systems
and last but not least
ability to work together
each organelle plays its own distinct role in the cell which makes them so special as if even one tiny part is missing - whole system of the cell is disturbed

thats one part
the other part is the fact that CELLS can differentiate
to different types of cells
and these different types of cells (refers to kind of a general structure, contents and so on, my general structure i mean for example neurons have one general structure - they all pretty much has same looks, next about contents- here i mean that depending on the function to be carried out - the amount of each organelle or the need or not need of each organelle or living requirements are more or less different for different cell types)
so these group of cell types make up 'tissue' - here these same types work together for particular purpose
next goes organs
now these tissues come together and make an organ
now here its starts to get more deep
different tissues come together and make up something bigger - organ- again with particular role in our body
and these organs come together and finally make up systems
here all organs vessels and tissues come together to perform the overall function such as digestion
meaning this kind of group work makes digestion possible
and finally organism - this is now the entire living thing

thats was next point
now other one is
the fact that our cells have the ability to divide - mitosis- make exact copy of itself
which is needed when cells get ruptured or die
so this is the ability to replace itself in case if its about to die
but replays to EXACT copy of itself is whats important here

next is differentiation
the ability to change its cell type to another cell type according to needs - this is very crucial specially at the beginning stage of life as we need different cell types to survive

next is the ability to pass on the information from one generation of cells to another (by mitosis to be exact)

and one more thing that i consider to be as important is
the ability to adapt
the fact that the cells working for a particular function can adapt to some changes and work together to make the effect less if not get rid of it fully - is as important as the rest of the points

hmmm i think thats about it

Answer 3

oh i already mentioned differentiation heh :)