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https://www.youtube.com/watch?v=8IlzKri08kk&vl=en

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Introduction to Cells: The Grand Cell Tour

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The understanding of how our cells are structured and function helped advance medicine in the world. New medical technologies have been developed because of our knowledge of cells. This helped save countless lives and will continue to save more.

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1.  What are the two organelles that are exclusively found in plant cells but not animal cells? - Chloroplasts and cell wall

2. What are the four main levels of organization in multicellular organisms in order (least→most complex)? - Cell --> Tissue --> Organ --> Organ system

3. What is the difference between the cell wall and the cell membrane? - The cell wall is only found in plant cells and keeps the cell a rigid shape. The cell membrane is found in both animal and plant cells and seperates the cell from the outside world.

4. What is the only example of prokaryotic organisms? Bacteria

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1.  Prokaryotic - lacking a distinct nucleus and other organelles due to the absence of internal membranes.

2. Eukaryotic - containing a nucleus and other membrane-bound organelles.

3. Organelle - Part of cell that carries out functions to allow the cell to survive.

4. Cytoplasm - fluid in cells that contains organelles in it.

5. Nucleus - large double-membraned organelle that is sometimes referred to as the “central unit” of the cell because it contains the chromosomes that bear the genetic material.

6. Golgi - organelle that helps process and package proteins and lipid molecules, especially proteins destined to be exported from the cell.

7. Cell Membrane - separates the interior of the cell from the outside environment.

8. Cell Wall - a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria

9. Diffusion - net movement of molecules from an area where they are at a higher concentration to areas where they are at a lower concentration.

10. Osmosis - diffusion of water through a semi-permeable membrane.