Biology Chapter: Cell Processes and Theories
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Questions and Answers

What is the role of standard deviation in a data set?

  • It specifies the mode of the data set.
  • It shows the range of data values.
  • It indicates the average value of data.
  • It provides information on data variability. (correct)

    • Which statement accurately differentiates a theory from a hypothesis?

  • A theory can change with new evidence, while a hypothesis remains constant.
  • A theory is based on observations, while a hypothesis is based on assumptions.
  • A theory is unproven, while a hypothesis is proven.
  • A theory is a broader explanation, while a hypothesis is a specific prediction. (correct)

    • What process occurs when a plant cell is placed in a hypotonic solution?

  • The cell undergoes active transport.
  • No change occurs within the cell.
  • The cell shrinks and loses water.
  • The cell swells and may burst. (correct)

    • Which of the following best explains the function of cholesterol in the cell membrane?

    <p>It enhances the fluidity and stability of the membrane.</p> Signup and view all the answers

    Which option correctly defines the phenomenon of osmosis?

    <p>The passive movement of water across a semi-permeable membrane.</p> Signup and view all the answers

    Which of the following organelles is responsible for energy production in eukaryotic cells?

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

    What is the primary function of the rough endoplasmic reticulum?

    <p>Protein synthesis</p> Signup and view all the answers

    What happens if a cell's surface area to volume ratio decreases?

    <p>Cell growth and function may be hindered.</p> Signup and view all the answers

    What is the outcome when a potato is placed in a hypertonic solution?

    <p>It loses mass due to osmosis.</p> Signup and view all the answers

    Which property of water allows it to form hydrogen bonds with other water molecules?

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

    What distinguishes saturated fatty acids from unsaturated fatty acids?

    <p>Saturated fatty acids have a higher melting point than unsaturated fatty acids.</p> Signup and view all the answers

    Which of the following statements accurately describes an anabolic process?

    <p>It synthesizes complex molecules from simpler ones.</p> Signup and view all the answers

    Which level of protein structure is characterized by the arrangement of multiple polypeptide chains?

    <p>Quaternary structure</p> Signup and view all the answers

    What are codons and why are they important in protein synthesis?

    <p>They are sequences of three nucleotides that specify amino acids.</p> Signup and view all the answers

    What does it mean for DNA replication to be semiconservative?

    <p>Each new DNA molecule consists of one old and one new strand.</p> Signup and view all the answers

    What is the primary role of ATP in cellular functions?

    <p>To provide energy for biochemical reactions.</p> Signup and view all the answers

    Which of the following correctly describes the process of hydrolysis?

    <p>It breaks down polymers into monomers by adding water.</p> Signup and view all the answers

    Which pigment is primarily responsible for the absorption of light during photosynthesis?

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

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