Prokaryotic Cells and Organelles Quiz
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Questions and Answers

What is the function of the endoplasmic reticulum in a cell?

  • Cellular movement facilitation
  • Provide a surface for biochemical activities (correct)
  • Storage of genetic material
  • Energy production
  • Which organelle is responsible for the transport of materials, especially proteins, within the cell?

  • Plastids
  • Lysosomes
  • Golgi apparatus (correct)
  • Mitochondria
  • What distinguishes eukaryotic cells from prokaryotic cells?

  • Smaller size
  • Lack of membrane-bound organelles
  • Presence of a nucleus (correct)
  • Absence of genetic material
  • Which organelle is responsible for intracellular digestion and waste removal?

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

    What is a major function of the mitochondria in a cell?

    <p>Energy production</p> Signup and view all the answers

    Which cell organelle is important for processing, packaging, and secreting proteins in the cell?

    <p>Endoplasmic reticulum</p> Signup and view all the answers

    What distinguishes eukaryotic cells from prokaryotic cells in terms of organelles?

    <p>Eukaryotic cells possess membrane-bound organelles while prokaryotic cells do not.</p> Signup and view all the answers

    What is the primary function of plastids in a cell?

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

    Explain the difference between skeletal muscles and smooth muscles in terms of their structure and function.

    <p>Skeletal muscles are striated, voluntary muscles attached to bones for movement, while smooth muscles are non-striated, involuntary muscles found in internal organs for involuntary movements.</p> Signup and view all the answers

    Describe the unique features of cardiac muscles and explain why they are different from skeletal and smooth muscles.

    <p>Cardiac muscles are striated, involuntary muscles found only in the heart. They have intercalated discs for synchronized contractions and are self-excitable.</p> Signup and view all the answers

    How does the structure of muscular tissues differ from other tissues in the human body?

    <p>Muscular tissues are specialized for contraction and relaxation, containing specialized proteins like actin and myosin which allow for movement.</p> Signup and view all the answers

    Explain the concept of involuntary movements and provide examples of muscular tissues involved in such movements.

    <p>Involuntary movements are actions that occur without conscious control. Examples include peristalsis in the digestive system (smooth muscles) and heart contractions (cardiac muscles).</p> Signup and view all the answers

    How does meristematic tissue play a role in the growth of plant roots?

    <p>Meristematic tissue is responsible for cell division and growth in plant roots. It is located at the root tips and allows for continuous root elongation.</p> Signup and view all the answers

    Discuss the significance of apical meristem in plant growth and development.

    <p>Apical meristem is found at the tips of plant roots and shoots, enabling primary growth in length. It is essential for the vertical growth of plants.</p> Signup and view all the answers

    What is the role of intercalary meristem in plant tissues, and where is it typically located?

    <p>Intercalary meristem is responsible for growth at the base of leaves and internodes in plants. It allows for regrowth after damage and contributes to plant elongation.</p> Signup and view all the answers

    Explain why the growth of roots in onions stops when the tips are cut in jar 2.

    <p>Cutting the root tips removes the apical meristem, which is responsible for root growth. Without the meristematic tissue, new cell production halts, leading to root growth cessation.</p> Signup and view all the answers

    Why is the presence of meristematic tissues important for the growth of plants?

    <p>Meristematic tissues continuously produce new cells for growth and repair in plants. They are essential for primary and secondary growth processes.</p> Signup and view all the answers

    How do differentiated cells in plants originate from meristematic tissues, and what changes occur during this process?

    <p>Meristematic cells differentiate into specialized cells through a process of maturation and structural changes. These changes lead to the formation of various plant tissues with distinct functions.</p> Signup and view all the answers

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