Scientific Theories and Living Organisms Quiz
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Questions and Answers

What is the main function of pseudopods in amoebas?

  • Nutrient absorption (correct)
  • Oxygen exchange
  • Waste removal
  • Reproduction
  • What is the primary function of pseudopods in amoebas?

  • Respiration
  • Locomotion and capturing food (correct)
  • Reproduction
  • Photosynthesis
  • How does paramecium move in freshwater?

  • Through pseudopods extension
  • Using cilia for slow crawling
  • By flagella propulsion (correct)
  • By contracting its cell membrane
  • How does a paramecium move in freshwater?

    <p>By sweeping food into an oral groove with cilia</p> Signup and view all the answers

    Which of the following is a specialized structure found in plant cells but not in animal cells?

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

    Which of the following is a specialized structure found in plant cells but not animal cells?

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

    What process allows oxygen to move from an area of high concentration to low concentration in cells?

    <p>Simple diffusion</p> Signup and view all the answers

    What is the process of diffusion?

    <p>Movement of molecules from a region of high concentration to low concentration</p> Signup and view all the answers

    Which factor does not affect the amount of detail you see through a microscope?

    <p>Type of organism</p> Signup and view all the answers

    Which part of a microscope is responsible for focusing on the specimen being observed?

    <p>Objective lens</p> Signup and view all the answers

    Which of the following organelles is responsible for photosynthesis in plant cells?

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

    What is the primary function of pseudopods in amoebas?

    <p>To capture and ingest food particles</p> Signup and view all the answers

    How does a paramecium move through freshwater?

    <p>Through the coordinated movement of cilia</p> Signup and view all the answers

    Which of the following is NOT a specialized structure found in plant cells?

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

    What is the process by which molecules move from a region of higher concentration to a region of lower concentration?

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

    Which type of microscope is used to observe specimens by transmitting a beam of electrons through the sample?

    <p>Transmission electron microscope</p> Signup and view all the answers

    What is the typical magnification range of the objective lenses used in a compound light microscope?

    <p>40x - 400x</p> Signup and view all the answers

    What is the primary function of pseudopods in amoebas?

    <p>To move the amoeba in a particular direction</p> Signup and view all the answers

    How does a paramecium move in freshwater?

    <p>By using cilia</p> Signup and view all the answers

    Which specialized structure is found in plant cells but not in animal cells?

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

    What is the process by which molecules move from a region of higher concentration to a region of lower concentration?

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

    What is the function of the objective lens in a microscope?

    <p>To magnify the specimen</p> Signup and view all the answers

    What is the relationship between the magnification power of the objective lens and the field of view in a microscope?

    <p>Higher magnification leads to a smaller field of view</p> Signup and view all the answers

    What is the primary function of pseudopods in amoebas?

    <p>To capture and engulf food particles</p> Signup and view all the answers

    How does a paramecium move in freshwater?

    <p>By beating its cilia in a coordinated manner</p> Signup and view all the answers

    Which specialized structure is found in plant cells but not in animal cells?

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

    What is the primary mechanism by which small, non-polar molecules move across cell membranes?

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

    Which type of microscope uses a beam of electrons instead of light to produce high-resolution images?

    <p>Both B and C</p> Signup and view all the answers

    What is the primary function of chloroplasts in plant cells?

    <p>Conversion of light energy into chemical energy through photosynthesis</p> Signup and view all the answers

    What is the primary function of pseudopods in amoebas?

    <p>To capture prey and move the cell</p> Signup and view all the answers

    How does a paramecium move in freshwater?

    <p>By beating its cilia in a coordinated manner</p> Signup and view all the answers

    Which specialized structure is found in plant cells but not in animal cells?

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

    What is the primary mechanism by which molecules move across a cell membrane?

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

    What type of microscope uses a beam of electrons instead of light to produce an image?

    <p>Both b and c</p> Signup and view all the answers

    Which part of a compound light microscope is responsible for focusing the light onto the specimen?

    <p>Objective lens</p> Signup and view all the answers

    How does the cell wall of a plant cell differ from the cell membrane of an animal cell?

    <p>Both a and c</p> Signup and view all the answers

    What is the primary function of mitochondria in both plant and animal cells?

    <p>Cellular respiration and energy production</p> Signup and view all the answers

    Which process is responsible for the movement of water molecules across a selectively permeable membrane?

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

    What is the primary advantage of using an electron microscope over a light microscope?

    <p>Electron microscopes have a higher resolving power and can achieve much greater magnification</p> Signup and view all the answers

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