Introduction to Biology Science
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Questions and Answers

What is the size range of majority of cells?

  • 1-10 μm
  • 5-500 mm
  • 100-1000 nm
  • 10-150 µm (correct)

    • What does the word 'biology' mean?

  • The study of living things (correct)
  • The study of rocks and minerals
  • The study of historical events
  • The study of outer space

    • What is the limit of resolution related to?

  • Limit of temperature measurement
  • Limit of smell detection
  • Limit of revealing minute details (correct)
  • Limit of color distinction

    • What are the branches of biology mentioned in the text?

    <p>Botany, anatomy, zoology, histology</p> Signup and view all the answers

    What is the main challenge faced by cell biologists in understanding cell organization and functioning?

    <p>Small dimensions and transparent nature of the cell</p> Signup and view all the answers

    Which unit is sometimes used to record the thickness of cell membranes and the sizes of macromolecules?

    <p>Angstrom (Å)</p> Signup and view all the answers

    What is the resolving power of the naked human eye?

    <p>100 μm</p> Signup and view all the answers

    What is the main difference between resolution power and magnification?

    <p>Resolution power refers to the smallest distance that may separate two points on an object and still permit their observation as distinct separate points, while magnification is the increase in size of optical image over the size of the object being viewed.</p> Signup and view all the answers

    Which type of microscope uses light to image the sample?

    <p>Optical microscope</p> Signup and view all the answers

    Who developed the first electron microscope in 1931?

    <p>Ernst Ruska</p> Signup and view all the answers

    What distinguishes living things from all other matter?

    <p>The organization of molecules into cells</p> Signup and view all the answers

    'Cell Theory' consists of how many principles?

    <p>3</p> Signup and view all the answers

    What is the approximate number of different cell types in a human body?

    <p>300</p> Signup and view all the answers

    What distinguishes cells within the same organism?

    <p>Size, shape, and internal organization</p> Signup and view all the answers

    'Cell Theory' contradicts which earlier hypothesis?

    <p>'Spontaneous Generation'</p> Signup and view all the answers

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