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13 Cards in this Set
- Front
- Back
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Scanning electron microscope (SEM) |
A microscope that uses an electron beam to scan the surface of spicemen(3D images) |
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Transmission electron microscope (TEM) |
A microscope that passes an electron beam through very thin sections and is primarily used to study the internal ultrastructure of cells. |
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Nuclear lamina |
It helps maintain the shape of the nucleus.(inside the nucleus) |
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Structures of the Endomembrane System |
Nuclear Envelope, Plasma Membrane, Endoplasmic Reticulum, Golgi Apparatus, Lysosomes, Vacuoles. |
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Function of every organelle in Eukaryotic cell |
Mitochondria: Make energy out of food Ribosomes: Make protein Golgi Apparatus: Make, process and package proteins Lysosome: Contains digestive enzymes to help break food down Rough ER: assembled protein(protein are exported out of the cell) Smooth ER: assembled lipids Vacuole: Used for storage, vacuoles usually contain water or food. Centrioles: Animal Cell(organize chromosome in cell division) |
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Mitochondria and Chloroplasts |
Contain their own DNA and ribosomes |
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Gap Junction(ANIMAL CELLS) |
A type of intercellular junction in animals that allows the passage of materials between cells. |
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Tight junction |
A type of intercellular junction in animal cells that prevents the leakage of material between cells. |
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Desmosome |
A type of intercellular junction in animal cells that functions as a rivet. |
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3 Types of cytoskeleton fibers |
A network of microtubules, microfilaments, and intermediate filaments that branch throughout the cytoplasm |
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Microfilaments |
Microfilaments are fine, thread-like protein fibers, 3-6 nm in diameter. They are composed by a protein called actin. Microfilaments' association with the protein myosin is responsible for muscle contraction. |
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Microtubules |
Microtubules are cylindrical tubes, 20-25 nm in diameter. They are composed of the protein tubulin. Microtubules determine cell shape, also form the spindle fibers for separating chromosomes during mitosis. When arranged in geometric patterns inside flagella and cilia, they are used for locomotion. |
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Intermediate Filaments |
Intermediate filaments are about 10 nm diameter and provide tensile strength for the cell. |
