Bio C2. Electron And Light Microscope

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Last updated 11:51 PM on 9/4/26
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24 Terms

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Electron microscope

See much finer cellular structures,

Ex. including ribosomes, ER, Golgi, lysosomes, peroxisomes, nuclear pores,

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Cell membrane

Thin boundary forming the entire outer edge of the cell

<p>Thin boundary forming the <strong>entire outer edge of the cell</strong></p>
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Cell Membrane( Light Microscope )

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Cytoskeleton

Throughout the cytoplasm, forming a network around and between organelles

<p><strong>Throughout the cytoplasm</strong>, forming a network around and between organelles</p>
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Microvilli

Project outward from the cell membrane on the exposed surface of the cell; usually found in dense rows.

<p><strong>Project outward from the cell membrane</strong> on the exposed surface of the cell; usually found in dense rows.</p>
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Cilia

Project outward from the cell membrane on the cell's exposed surface; extend into the surrounding space

<p><strong>Project outward from the cell membrane</strong> on the cell's exposed surface; extend into the surrounding space</p>
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Centriole

Near the nucleus, usually within the centrosome in the cytoplasm.

<p><strong>Near the nucleus</strong>, usually within the centrosome in the cytoplasm.</p>
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Free ribosomes

Floating freely throughout the cytoplasm, not attached to any membrane.

<p><strong>Floating freely throughout the cytoplasm</strong>, not attached to any membrane.</p>
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Attached ribosomes

Directly attached to the outer surface of the rough ER, especially on ER sheets close to the nucleus

<p><strong>Directly attached to the outer surface of the rough ER</strong>, especially on ER sheets close to the nucleus</p>
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Mitochondria

Scattered throughout the cytoplasm, often between other organelles.

<p><strong>Scattered throughout the cytoplasm</strong>, often between other organelles.</p>
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Rough ER

In the cytoplasm surrounding/near the nucleus, often continuous with the outer nuclear membrane.

<p><strong>In the cytoplasm surrounding/near the nucleus</strong>, often continuous with the outer nuclear membrane.</p>
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Smooth ER

Throughout the cytoplasm, often connected to or extending from rough ER

<p><strong>Throughout the cytoplasm</strong>, often connected to or extending from rough ER</p>
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Golgi apparatus

In the cytoplasm near the nucleus and ER, usually positioned between the ER and the cell surface.

<p><strong>In the cytoplasm near the nucleus and ER</strong>, usually positioned between the ER and the cell surface.</p>
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Lysosome

Scattered within the cytoplasm, separate from the nucleus and other membrane-bound organelles.

<p><strong>Scattered within the cytoplasm</strong>, separate from the nucleus and other membrane-bound organelles.</p>
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Peroxisome

Located in the cytoplasm, often near the ER and mitochondria.

<p><strong>Located in the cytoplasm</strong>, often near the ER and mitochondria.</p>
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<p>Nucleus</p>

Nucleus

Usually near the center of the cell, surrounded by cytoplasm.

  • Contains the cell’s DNA.


<p>Usually <strong>near the center of the cell</strong>, surrounded by cytoplasm.</p><ul><li><p><span style="background-color: transparent;">Contains the cell’s DNA.</span></p></li></ul><p></p>
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Nucleus( Light )

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Nucleolus

Inside the nucleus, usually appearing as a dense region within the nuclear interior.

<p><strong>Inside the nucleus</strong>, usually appearing as a dense region within the nuclear interior.</p>
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Nuclueous ( light )

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Nuclear membrane/envelope

Immediately surrounding the nucleus, forming its outer boundary and separating it from the cytoplasm.

<p><strong>Immediately surrounding the nucleus</strong>, forming its outer boundary and separating it from the cytoplasm.</p>
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<p><strong>Nuclear pore</strong></p>

Nuclear pore

Embedded within the nuclear membrane, appearing as small openings/structures that pass through the nuclear envelope.

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Light microscope

A microscope that uses visible light and glass lenses to magnify cells and tissues so they can be viewed.

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<p>What is seeable in a light microscope compared to electron mircoscope?</p>

What is seeable in a light microscope compared to electron mircoscope?

  • Cell membrane

  • Nucleus

  • Nucleolus


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<p>What is visible in an electron microscope?</p>

What is visible in an electron microscope?

 Much finer cellular structures, including ribosomes, ER, Golgi, lysosomes, peroxisomes, nuclear pores, etc.