Biology Chapter: Plant and Animal Cells
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Questions and Answers

What is the total magnification when using a 10x ocular lens and a 100x objective lens?

  • 600x
  • 700x
  • 1500x
  • 1000x (correct)
  • What is the field of view (FOV) at 300x if the FOV at 40x is 0.55 mm?

  • 220 μm
  • 110 μm
  • 73 μm (correct)
  • 30 μm
  • Which cell structure is crucial for water transport from roots to leaves in plants?

  • Cortex cells
  • Epidermal tissue cells
  • Xylem tissue cells (correct)
  • Phloem tissue cells
  • What happens to an animal cell when placed in a hypertonic solution?

    <p>It shrinks as water moves out.</p> Signup and view all the answers

    How is root pressure created in plants?

    <p>When water flows into the root system diluting solutes.</p> Signup and view all the answers

    What would occur if plants lacked auxins?

    <p>Plants would not respond to gravity.</p> Signup and view all the answers

    What is an expected effect of placing a plant cell in isotonic solution?

    <p>Cell will remain unchanged.</p> Signup and view all the answers

    Which adaptation helps cacti survive in arid environments?

    <p>Modified leaves as spines.</p> Signup and view all the answers

    What is the greatest magnification achieved by a Transmission Electron Microscope (TEM)?

    <p>100,000</p> Signup and view all the answers

    What type of image does a Scanning Electron Microscope (SEM) produce?

    <p>Black and white images with surface detail</p> Signup and view all the answers

    Which method is used for focusing in a Transmission Light Microscope?

    <p>Ground glass lenses</p> Signup and view all the answers

    What is a major disadvantage of using a Transmission Electron Microscope?

    <p>Images are difficult to interpret</p> Signup and view all the answers

    What is a key advantage of Scanning Electron Microscopes over Transmission Electron Microscopes?

    <p>Production of 3-dimensional images</p> Signup and view all the answers

    Which microscope uses electrons passing through the material to produce an image?

    <p>Transmission Electron Microscope</p> Signup and view all the answers

    When using a Scanning Electron Microscope, what is required of the specimen?

    <p>It must be dried and dead</p> Signup and view all the answers

    Which of the following types of microscopes provides color images?

    <p>Transmission Light Microscope</p> Signup and view all the answers

    What is a significant quality of the images produced by a Transmission Electron Microscope?

    <p>They are black and white and have high resolving power</p> Signup and view all the answers

    Which microscope is most suitable for studying the internal structure of materials?

    <p>Transmission Electron Microscope</p> Signup and view all the answers

    What term describes the energy stored in a material that is bent, compressed, or stretched and returns to its original shape when released?

    <p>Elastic potential energy</p> Signup and view all the answers

    Which of the following terms refers to the energy stored in the bonds that hold atoms together?

    <p>Chemical energy</p> Signup and view all the answers

    What is the term for the energy stored in the inner core of an atom?

    <p>Nuclear energy</p> Signup and view all the answers

    Which term best describes the length of a path from one point to another?

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

    What term defines the location of an object relative to a particular reference point?

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

    Which term is used to represent the size or amount of something?

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

    What term refers to the displacement of an object in a unit of time, such as one second?

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

    Which term accurately reflects the distance traveled in a particular unit of time?

    <p>Average speed</p> Signup and view all the answers

    Which of the following statements about kinetic energy is not true?

    <p>An object can have kinetic energy even if it is not in motion.</p> Signup and view all the answers

    What happens to the potential energy of a system when it is transformed into kinetic energy?

    <p>Some is lost to friction.</p> Signup and view all the answers

    If a race car has a kinetic energy of $9.40 \times 10^3$ J and races at an average speed of 9.50 m/s, what is the mass of the car?

    <p>208 kg</p> Signup and view all the answers

    Which of the following is true about the motion of a pendulum at different points in its swing?

    <p>Energy is conserved between potential and kinetic forms at all points.</p> Signup and view all the answers

    In the context of electric motors, what does a 73% efficiency rating indicate?

    <p>73% of the input energy is converted to useful work.</p> Signup and view all the answers

    Which statement regarding energy transformation in a motor is incorrect?

    <p>All input energy is used for mechanical work.</p> Signup and view all the answers

    In the context of energy and work, which statement is generally not true?

    <p>Work done on an object always increases its kinetic energy.</p> Signup and view all the answers

    What aspect is preserved when potential energy is converted into kinetic energy?

    <p>Total mechanical energy in an ideal system.</p> Signup and view all the answers

    Which of the following is NOT a reason for a plant to sense its orientation?

    <p>To ensure the plant transports nutrients correctly</p> Signup and view all the answers

    What was the name given to the chemical that stimulates growth in plant stem tips?

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

    Which quantity is classified as a scalar quantity?

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

    Which statement about the relationship of distance and displacement is true?

    <p>Distance can equal displacement under certain conditions</p> Signup and view all the answers

    What does the symbol ∆ (delta) signify in mathematical operations?

    <p>Subtraction to determine difference</p> Signup and view all the answers

    When expressed in two significant digits, what is the correct representation of the value 1275?

    <p>1.3 x 10^3</p> Signup and view all the answers

    How many significant digits are present in the number 10.060?

    <p>5</p> Signup and view all the answers

    What is the total distance traveled by Galileo in one minute at a speed of 39 m/s?

    <p>2.34 x $10^3$ m</p> Signup and view all the answers

    From t=1 s until t=2 s, the car is best described as which of the following?

    <p>Travelling at uniform speed</p> Signup and view all the answers

    What are the distances the car traveled from t=0 s to 1 s and from t=1 s to 2 s?

    <p>5.0 m and 10.0 m</p> Signup and view all the answers

    If Gretzky shoots a puck at 90 km/h from 15 m away, how long does it take to reach the net?

    <p>0.60 s</p> Signup and view all the answers

    If the Sun Spider runs between two fig trees 3.6 m apart at maximum speed, what is the shortest time possible?

    <p>0.23 s</p> Signup and view all the answers

    In a velocity-time graph, which graph corresponds to a constant speed?

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

    Which statement about a position versus time graph is incorrect?

    <p>A downward slope indicates that the object was slowing down.</p> Signup and view all the answers

    To lift a bag of sugar weighing 4.54 kg at constant speed, what force is necessary?

    <p>44.5 N</p> Signup and view all the answers

    Study Notes

    Cell Theory

    • All living things are composed of one or more cells
    • A cell is the smallest functional unit of life
    • All cells are produced from other cells

    Cell Types

    • Prokaryotic cells: lack a nucleus
    • Eukaryotic cells: contain a nucleus and other membrane-bound organelles

    Microscope Types

    • Light microscope: magnifies up to 1000x, uses light to view image, can view living specimens
    • Transmission electron microscope (TEM): magnifies up to 100,000x/million, uses electrons, can only view dead specimens, good for internal structures
    • Scanning electron microscope (SEM): magnifies up to 20,000x, uses electrons, views the surface of specimens, good for viewing surface structures in 3D

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    Description

    Test your knowledge on key concepts related to plant and animal cells. This quiz covers topics such as magnification, field of view, water transport, and adaptation strategies. Challenge yourself with questions that highlight essential biological processes and structures.

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