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Cell Definitions

Explore the essential components of a cell, including the cell membrane, nucleus, ribosomes, mitochondria, and more. Understand their functions and how they work together to support cellular activities.

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Cell Definitions

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  1. Cell Definitions

  2. Cell Membrane • Found in all cells • Controls or regulates what goes in and out of the cell. Outermost living layer of the cell. • The “Gate Keeper”

  3. Cell Membrane Picture

  4. Cell Wall • Found in plants and some bacteria. • Outermost non-living layer of the cell. • Rigid layer.

  5. Cell Wall Picture

  6. Nucleus • Found in eukaryotes • Control & information center of the cell. • “The Brain”

  7. Nucleus Picture

  8. Cytoplasm • Found in all cells • Jelly-like substance found inside the cell membrane. • Allows cell parts to move more freely.

  9. Ribosome • Found in all cells • Makes all the proteins produced by the cell.

  10. Ribosome Picture

  11. Endoplasmic Reticulum • Found in eukaryotes. • Transports materials throughout the cell. • “Highway”

  12. Endoplasmic Reticulum Picture

  13. 2 kinds of E.R. • Smooth E.R.- Does not have ribosomes. • Rough E.R.-Has ribosomes studded on it and produces proteins.

  14. Mitochondria • Converts glucose (sugar) into usable energy. The site of cellular respiration. • “Power House”

  15. Mitochondria

  16. Chloroplast • Found in plant cells & some bacteria. • Puts CO2 and H2O together (uses energy from the sun) to make glucose. *Photosynthesis*

  17. Chloroplast Picture

  18. Chromosomes (DNA) • DNA is found in all cells • Blueprint or master plan of the cell. Structures in the nucleus that contain the genetic information (DNA).

  19. Chromosome picture

  20. Golgi Complex • Produce and release products and are especially common in tissues which secrete products. ( Glands ) • “Post Office”

  21. Golgi Complex picture

  22. Lysosome • Digestive sac. Like the stomach of the cell. • “Little Stomach”

  23. Lysosome Picture

  24. Vacuole • Storage sacs ( help in digestion, waste and food storage ). Help to transport materials throughout the cell. • “the closet”

  25. Vacuoles Picture

  26. Vacuole Note: • Plant cells have an extra large water vacuole.

  27. If you need more space, continue your notes onto the bottom of p. 17 and 18.

  28. Nucleolus • Small body within the nucleus that makes ribosomal rna.

  29. Nucleolus picture

  30. Centrioles • Cylinder shaped structures which help separate chromosomes during cell division.

  31. Centriole Picture

  32. Microtubules • Hollow tube-like proteins • Used to build structure(s) inside the cell.

  33. Nucleoplasm • Jelly-like substance found inside the Nucleus.

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