Cell Types and Development
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Questions and Answers

What is the characteristic of the nucleus in a cell?

  • It is located in the center of the cell and controls all functions of the cell (correct)
  • It is responsible for the production of proteins
  • It is the outermost layer of the cell
  • It is a type of organelle found in the cytoplasm
  • What is the primary function of the cell membrane?

  • To store genetic information
  • To synthesize proteins
  • To provide structural support to the cell
  • To control the movement of molecules in and out of the cell (correct)
  • What is the layer of molecules that forms the central part of the cell membrane?

  • Oligosaccharide chains
  • Phospholipids bilayer
  • Hydrophobic chains (correct)
  • Hydrophilic heads
  • What is the size range of eukaryotic cells?

    <p>2-1000 µm</p> Signup and view all the answers

    What is the process by which stem cells change their structure or function to form cells with different structures and functions?

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

    What is the term for the thick fluid that makes up the cytoplasm?

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

    What is the purpose of the morula stage in embryonic development?

    <p>To form the blastocyst</p> Signup and view all the answers

    What is the type of cell that is found in the inner cell mass of the blastocyst?

    <p>Embryonic stem cell</p> Signup and view all the answers

    What is the primary function of cholesterol in the cell membrane?

    <p>To maintain the fluidity of the cell membrane under various temperatures</p> Signup and view all the answers

    What is the purpose of lipid rafts in the cell membrane?

    <p>To restrict the movement of cell signaling proteins</p> Signup and view all the answers

    What is the composition of the cell membrane?

    <p>A lipid bilayer with cholesterol and phospholipids</p> Signup and view all the answers

    What is the purpose of membrane proteins in the cell membrane?

    <p>To act as membrane transporters and enzymes</p> Signup and view all the answers

    What is the significance of the fluid mosaic model?

    <p>It validates the fluidity-modulating function of cholesterol</p> Signup and view all the answers

    What is the primary function of integral proteins in the cell membrane?

    <p>To act as carriers and transporters</p> Signup and view all the answers

    Which of the following is NOT a function of glycocalyx?

    <p>Stabilizing the lipid bilayer</p> Signup and view all the answers

    What is the location of lipid rafts in the cell membrane?

    <p>Only in some parts of the cell membrane</p> Signup and view all the answers

    What is the function of membrane proteins that are loosely attached to the outer side of the cell membrane?

    <p>To act as several kinds of enzymes</p> Signup and view all the answers

    What is the primary location of glycoproteins and glycolipids in the cell membrane?

    <p>Outer layer</p> Signup and view all the answers

    What is the significance of the experiment involving radioactive membrane proteins?

    <p>It validates the fluidity-modulating function of cholesterol</p> Signup and view all the answers

    What is the effect of cholesterol on the lipid bilayer?

    <p>It restricts the movement of the lipid bilayer</p> Signup and view all the answers

    What type of proteins are located in only one layer of the phospholipid bilayer?

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

    What is the main difference between phospholipids in the inner and outer halves of the red blood cell membrane?

    <p>The inner half has more phosphatidylserine</p> Signup and view all the answers

    What is the role of sphingomyelin in the red blood cell membrane?

    <p>It is part of the outer half of the membrane</p> Signup and view all the answers

    What is the term for the carbohydrate shell on the outer surface of the cell membrane?

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

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