Embedded Files
Unicellular
Unicellular
Some organisms exists as 1 cells such as amoeba or other bacterias that are too small to see for naked eyes.
They can carry out all life process in just 1 cell using small structures known as organelles.
They cannot grow larger because they're limited by a surface area of volume ratio unlike unicellulars which are animals.
Despite being only a single cell, it can still get nutrition, they usually by phagocytosis, where food is flooded in food vacuum inside the organisms.
Unlike multicellular organisms, injury to them causes death, since 1 cell is everything to them. Whereas injury or death to cells in multicellular isn't a problem since they have numerous cells.
Phagocytosis: cellular process for ingesting and eliminating particles larger than 0.5 μm in diameter
Prokaryotic and Eukaryotic
Prokaryotic and Eukaryotic
Unicellular organisms whose cells lack a nucleus and other organelles.
Eukaryotic organisms are any cell or organism that possesses a clearly defined nucleus. They can be both unicellular and multicellular
Some of them however such as algae are about 15-20 m tall can be both multicellular and unicellular
Multicellular
Multicellular
They are animals/living-beings composed of more than one cells like the term "multi" suggests. They have group of cells that are each specialized in various functions.
Such as humans, cells differentiate early in development to become nerve cells, skin cells, muscle cells, blood cells, and other types of cells.
Majority of animals and plants are multicellular that can grow larger and have cell differentiation.
Groups of cells functions same way to form tissues and organs (heart, intestines). Unlike unicellulars, they have long life-span since they're animals.
Unlike unicellular organisms, injury or death to cells in multicellular isn't a problem since they have numerous cells. whereas injury to unicells causes death, since 1 cell is everything to them.
Cell differentiation: Process of less specialized cell becomes more specialized cell type. occurs many times during the development of a multicellular organism.
Page updated
Google Sites
Report abuse