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Cell Organelles Quiz
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Cell Organelles Quiz

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Questions and Answers

What is the primary material of the plasma membrane?

  • Phospholipids (correct)
  • Integral proteins
  • Glycolipids
  • Cholesterol
  • Which organelle provides a suitable medium for reactions occurring in the cytoplasm?

  • Golgi apparatus
  • Mitochondria
  • Matrix (cytosol, cell sap) (correct)
  • Endoplasmic reticulum
  • Where are peripheral proteins found in relation to phospholipids?

  • On the inner or outer bilayer of phospholipids (correct)
  • Present within the bilayer of phospholipids
  • Linked to the proteins (glycolipids)
  • Incorporated into the hydrophobic core
  • What is the envelope of the cell that encloses its cytoplasmic compartments and preserves its shape?

    <p>Cell membrane (plasmalemma)</p> Signup and view all the answers

    What are found to be linked to the proteins on the extracellular surface of the plasma membrane?

    <p>Glycolipids</p> Signup and view all the answers

    Which organelle appears as a colorless watery fluid or semi-fluid substance in between other organelles and inclusions?

    <p>Matrix (cytosol, cell sap)</p> Signup and view all the answers

    What is the approximate thickness of the unit membrane?

    <p>7.5-10 nm</p> Signup and view all the answers

    What is the function of the plasma membrane related to cellular transport?

    <p>It allows selective permeability</p> Signup and view all the answers

    What is the primary material of the light layer in the trilaminar structure of the cell membrane after fixation in osmium tetroxide?

    <p>Non-polar lipid</p> Signup and view all the answers

    Which process requires energy and involves the absorption of molecules by engulfing them, either solid particles or small molecules and ions?

    <p>Endocytosis</p> Signup and view all the answers

    Which organelle is equipped with receptors for performing specific functions when substances like hormones are bound to the receptors?

    <p>Cell membrane</p> Signup and view all the answers

    What is the function of the endoplasmic reticulum related to protein synthesis?

    <p>Synthesizing pro</p> Signup and view all the answers

    What type of molecules are unable to traverse the cell membrane?

    <p>Polar molecules</p> Signup and view all the answers

    Which molecule can freely pass through the cell membrane via passive diffusion?

    <p>$O_2$ (oxygen)</p> Signup and view all the answers

    What is the approximate thickness of each layer of the trilaminar structure of the cell membrane after fixation in osmium tetroxide?

    <p>$2.5$ nm</p> Signup and view all the answers

    What is the primary function of the cytoskeleton within the cell?

    <p>$Structural ext{ } support ext{ } for ext{ } the ext{ } cell$</p> Signup and view all the answers

    Which organelle has been discovered to be present within the bilayer of phospholipids?

    <p>Mitochondria</p> Signup and view all the answers

    What is the primary function of the annulate lamellae within the cell?

    <p>Synthesizing proteins</p> Signup and view all the answers

    Where are glycolipids found in relation to the plasma membrane?

    <p>Linked to the proteins on the extracellular surface</p> Signup and view all the answers

    What is the approximate thickness of each layer of the trilaminar structure of the cell membrane after fixation in osmium tetroxide?

    <p>$2(5 - 1)$ nm</p> Signup and view all the answers

    What type of molecules are unable to traverse the cell membrane?

    <p>Hydrophilic molecules</p> Signup and view all the answers

    What is the primary material of the light layer in the trilaminar structure of the cell membrane after fixation in osmium tetroxide?

    <p>Cholesterol</p> Signup and view all the answers

    What is the approximate thickness of the trilaminar structure of the cell membrane after fixation in osmium tetroxide?

    <p>7.5-10 nm</p> Signup and view all the answers

    What is the primary function of the endoplasmic reticulum within the cell?

    <p>Cellular transport</p> Signup and view all the answers

    Which process requires energy and involves the absorption of molecules by engulfing them, either solid particles or small molecules and ions?

    <p>Endocytosis</p> Signup and view all the answers

    What is the primary material of the light layer in the trilaminar structure of the cell membrane after fixation in osmium tetroxide?

    <p>Non-polar lipid</p> Signup and view all the answers

    Where are peripheral proteins found in relation to phospholipids in the cell membrane?

    <p>In the outer leaflet of the membrane</p> Signup and view all the answers

    Which organelle is equipped with receptors for performing specific functions when substances like hormones are bound to the receptors?

    <p>Plasma membrane</p> Signup and view all the answers

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