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Cell Structure
Cell Structure and Function Notes
Term | Definition |
---|---|
Discovery of the Cell | Mid 1600's scientist began using microscope to observe living things |
Robert Hooke | Used Microscope to observe thin slice of Cork - dead plant material |
Corked seemed to be made of box-like chambers - Hooke called | Cell |
Cell Theory | All Living things composed of cells |
Cells | Are the basic unit of STRUCTURE and FUNCTION in living things. |
New cells are produced from | Existing Cells |
Organisms | Made of ONE CELL- UNICELLULAR organisms |
Example of Organism is | BACTERIA |
Multicellular | Made of MANY CELLS organisms. |
Example of Multicellular | Plants and Animals |
Homeostasis | Process by which organism maintain a relatively stable internal environment |
Each cell must be in what with it's environment, exchange food, waste, H20 | Balance |
Prokaryotic | Organisms that do not have a distinct nucleus |
Example of Prokaryotic | BACTERIA |
Eukaryotic | Organisms with cells that have true nucleus and organelles |
Example of Eukaryotic | Plants, animals, fungi |
Organelles | Specialized cell parts or "Little Organs" |
Cytoplasm | Gel-like medium that holds the organelle in position |
Nucleus | Control center of the cell |
Nuclear Membrane | Double Membrane that SURROUNDS THE NUCLEUS. |
Chromatin | HEREDITARY INFORMATION inside the nucleus. |
Ribosomes | Makes Protein |
ROUGH ENDOPLASMIC RETICULUM (Rough ER) | Makes and TRANSPORT PROTEIN within the cell |
Called Rough ER because | The Ribosomes along the membrane and found on its surface. |
Rough ER has extensive network continuous with | Nuclear Envelope |
Function of the Rough ER | to Modify and transport proteins. |
Most of the Proteins for Rough ER are packaged into | Vesicles |
The Vesicles of Rough ER are shuttled to the | Golgi apparatus |
Smooth Endoplasmic Reticulum (Smooth ER) | MANUFACTURES AND TRANSPORT LIPIDS and other materials within the cell. |
The Function of Smooth ER | breaks down GLYCOGEN detoxifies POISONS, and stores CALCIUM. |
Called Smooth ER because | It lacks ribosomes found on its surface |
Golgi apparatus | Process and packages proteins and other substances produced in the ER |
The Function of Golgi Apparatus is | Receives, Modifies, and ships products by way of vesicles into the CYTOSOL - CELL MEMBRANE |
Lysosomes | Cleans up the cell and digest unwanted materials |
Found in only Animal Cells | Lysosomes |
Lysosomes contain round sacs containing | Enzymes that breakdown and recycle used cell components. Also used as a defense against bacteria and viruses |
Vacuoles | Sac like structures may be used as storage for WATER, MOLECULE, OR WASTE. |
Plants cells usually contains a | LARGE VACUOLE that fills most of the cell - pressure from this large vacuole helps plant support themselves. |
Mitochondria | ENERGY SOURCE of the cell. |
Cell Wall | Provides support and Protection for cells. |
Chloroplast | Makes glucose using the energy from the sun (Photosynthesis) |
Double- walled organelle with inner folds to | Increase surface area |
Mitochondria uses | Glucose to manufacture energy in the form of ATP |
Mitochondria has it's own | DNA |
Chloroplast is found in | Plant Cell |
Chloroplast contains | Chlorophyll and their own DNA |
Chloroplast harvest energy from the | Sun to produce ATP through photosynthesis |
Centrioles | Found in Animal cells only. |
Centrioles only bundle of | Microtubules that play a role in cell division. |
Cytoskeleton | Network of protein filaments that helps cells MAINTAIN ITS SHAPE. |
Cytoskeleton is composed of | Protein fibers known as microtubules. |
Cytoskeleton provide motility for some cells in the form of | Cilia or Flagella |
Extensive cytoskeleton found in | Animal Cells |
Cilia | Like little hairs |
Flagella | Like a tail |
Specialized parts of the Cell for Movement | Cilia and Flagella |
The Structure of cells | Is HOW IT IS BUILT |
The Function of a cell | Is WHAT IT DOES |
Example of Plant Cell | Leaf Cell and Root Cell |
Leaf Cell | Contains MANY CHOLORPLAST TO maximize PHOTSYNTHESIS |
Root Cell | Contain MANY VACUOLES to maximize water and starch storage. |
Example of Animal Cell | Epithelial Cell |
Epithelial Cell | Have VILLI to increase NUTRIENT ABSORPTION; found in the intestines. |
Muscle Cell | Contain MANY MITOCHONDRIA to produce more energy for movement |
Nerve Cell | Have fibers called DEDRITES that allow nerve cells to COMMUNICATE with each other. |