Cells and Organelles
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| Cell Membrane | Controls passage of materials into and out of cells
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| Nucleus | Contains hereditary material (DNA), helps regulate cell's activities
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| Nucleolus | Formation of ribosomes
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| Cytoskeleton | Maintains cell shape, anchors organelles, directs traffic, enables cell to move
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| Vacuoles | Storage revervoires, cell support (mainly plants)
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| Rinosomes | Sits of synthesis of proteins
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| Endoplasmic Reticulum | Networrk of membranes involved in many cellular activities, particularly protein synthesis
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| Golgi Complex | Modification of proteins, distribution centre
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| Lysosomes | Intracellular digestive activities
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| Mitochondria | Energy production
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| Chloroplasts | Photosynthesis
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| Cilia and Flagellae | External movement of cells or movement of materials along cell surfaces
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| Prokaryotic cell | Simple unicellular organism which contains genetic material in the form of a large circular molecule of DNA, but there is no organised nucleus.
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| Eukaryotic Cell | Commonly multicellular organisms which contain an organised nucleus enclosed by membranes.
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| Peptidoglycan | Sugar polymers crosslinked by short polypeptides, which comprises the cell wall of Prokaryotes (Bacteria)
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| First to use the word "cell" in 1600s | Robert Hooke
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| Concluded that plant and animal tissue was made up of organised masses of cells (1838) | Schleiden and Schwann
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| Proposed that cells can only arise from pre-existing cells (1858) | Virchow
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| Resolving power of light microscope | 0.25 micrometres
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| Resolving power of transmission Electron Microscopes | 0.1-0.2 nanometres
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| Diameter of most Prokaryotic Cells | 1-5 micrometres
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| Diameter of prokaryotic and eukaryotic cells | 5-30 micrometres
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| Reason for the fragile nature of Animal Cells | Animal cells have a cell membrane but no cell wall, and are therfore rather fragile.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
cvan100