Levels of Complexity in Multicellular Organisms
This post will take you through the structure and function of tissues, organs and systems in multicellular organisms for Prelim Biology.
What are Specialised Cells?
A specialised cell is essentially a cell that has a structure and features fit for a specific purpose or function (e.g. blood cells, muscle cells, nerve cells). This video will go through specialised cells in a little more depth.
This video explores cell structure and function in a little more depth.
Levels of Organisation in an Organism
A multicellular organism has levels of complexity that spans from the organelle state to the organism state. It goes from:
organelles -> cells -> tissue -> organs -> organ system -> organism
Tissues are made from clusters of specialised cells, organs are made from a complex array of tissues, an organ system (e.g. circulatory, respiratory) is formed by the complex interaction between involved organs and an organism is the result of all of these. This video will go through the levels of organisation of an organism in more depth.
This video will relate cell differentiation and specialisation to function. Try and see how these can be connected with the organisation of levels in an organism.
https://www.youtube.com/watch?v=X0GMp8oM_2E
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