The content explains the fundamental differences between unicellular and multicellular organisms, highlighting how their cellular structure dictates their complexity, efficiency, lifespan, and ability to grow and survive.
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did you know that some organisms exist
of just one cell these simple organisms
like amoeba are unicellular they depend
on simple diffusion for life they're
usually too small to be visible with the
naked eye like bacteria and so we need a
microscope to see them but there are
some unicellular algae is there about 15
to 20 centimeters in size or other
organisms are multicellular they consist
of multiple cells and are more complex
the vast majority of plants and animals
are multicellular being multicellular
allows organisms to be larger and have
south differentiation the different
types of cells to carry out different
tasks groups of cells then function in
the same way to form tissues or organs
these specialized organs carry out our
life processes working together in
systems unicellular organisms can carry
out all life processes in just the one
cell using internal structures called
organelles the decreased ability to
share out life's processes means
unicellular organisms have a low level
of efficiency whereas multicellular
organisms are highly efficient with
division of labor at the cellular tissue
or organ system level unicellular
organisms cannot grow large because
they're limited by a surface area to
volume ratio whereas multicellular
organisms can increase the number of
small cells to give it a large size
overall multicellular organisms have
long lifespans because individual cells
have a relatively smooth workload
whereas the hard-working single cell of
a unison organisms has such a heavy
workload that it can only maintain a
very short lifespan I don't need to tell
you how we get nutrition
but how does a single cell manage it
usually by phagocytosis where the food
is engulfed and installed in food
vacuums inside the organism all
prokaryotes are unicellular eukaryotes
can be uni or multicellular organisms we
look at the difference between pro and
eukaryotes in this video and we'll
discover why the statement that that all
prokaryotes are unicellular is continued
by some scientists as well as
prokaryotes most protests and some fungi
like yeast are also unicellular so then
we have unicellular and multicellular
organisms final thought to leave you
with is that injury to the south of the
unicellular organism can cause death
then one cell is everything to them
whereas injury or death of some cells in
multicellular organisms shinnok was a
problem those cells can simply be
replaced if you liked the video give it
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