Cell Biology: Dr. Dipa Sarkar
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Questions and Answers

What is one of the key statements made by the cell theory?

  • Cells always function as autonomous units
  • The cell is the smallest unit of life (correct)
  • Living structures are composed of discrete cells
  • Fungi may have filamentous structures called hyphae

Which of the following challenges the idea that cells always function as autonomous units?

  • Some fungi have filamentous structures
  • All living things are composed of cells
  • Unicellular algae may grow to large sizes
  • Muscle cells fuse to form fibres with multiple nuclei (correct)

What characteristic of fungal hyphae challenges the idea of living structures being composed of discrete cells?

  • Fungi having filamentous structures
  • Cells arising only from pre-existing cells
  • Unicellular algae growing to large sizes
  • Fungi being aseptate with continuous cytoplasm (correct)

Which type of algae may grow to very large sizes and present an exception to typical cell sizes?

<p>Unicellular algae (C)</p> Signup and view all the answers

In cell biology, what process involves nuclear division to produce two daughter cells?

<p><strong>Mitosis</strong> (A)</p> Signup and view all the answers

Which statement best summarizes a fundamental concept of cell theory?

<p><strong>Cells arise only from pre-existing cells</strong> (B)</p> Signup and view all the answers

What is the main difference between prokaryotic and eukaryotic cells?

<p>Presence of membrane-bound organelles (D)</p> Signup and view all the answers

Which evolutionary process is believed to have led to the development of eukaryotic cells?

<p>Endosymbiosis (A)</p> Signup and view all the answers

What is a distinctive feature of eukaryotic cells compared to prokaryotic cells?

<p>Larger ribosomes (C)</p> Signup and view all the answers

Which statement best describes the main function of organelles in a cell?

<p>Performing specific roles within the cell (B)</p> Signup and view all the answers

What is meant by compartmentalization in eukaryotic cells?

<p>Separation of different cellular functions into specialized areas (B)</p> Signup and view all the answers

Which mnemonic can help remember differences between prokaryotic and eukaryotic cells?

<p>DORA (D)</p> Signup and view all the answers

What cellular component in prokaryotic cells is responsible for polypeptide synthesis?

<p>Ribosomes (D)</p> Signup and view all the answers

Which structure in prokaryotic cells is used for protection against desiccation and phagocytosis?

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

How do prokaryotes typically divide?

<p>Binary fission (B)</p> Signup and view all the answers

What is the main function of attachment pili in prokaryotic cells?

<p>Adherence to surfaces (C)</p> Signup and view all the answers

What is the function of the cytoplasm in prokaryotic cells?

<p>Internal fluid component of the cell (C)</p> Signup and view all the answers

Which cellular component maintains the shape of prokaryotic cells and prevents bursting?

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

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