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Home › Biology › Cell Biology - General

Cell Biology - General — Biology Questions & Practice

Practise 15 Cell Biology - General questions from Biology for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong.

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Practice questions on Cell Biology - General — with answers

Try each question first, then open the answer. Explanations are included.

1. Who is credited with discovering and naming the cell, after observing cork under a microscope in 1665?

  1. ATheodor Schwann
  2. BRobert Brown
  3. CMatthias Schleiden
  4. DRobert Hooke
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Answer: D

Robert Hooke discovered and named the 'cell' in 1665 after observing thin slices of cork under a microscope, seeing box-like compartments.

2. Who discovered the living cell (observing it in pond water) and is credited as the 'Father of Microbiology'?

  1. AAnton van Leeuwenhoek
  2. BRobert Koch
  3. CRobert Hooke
  4. DLouis Pasteur
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Answer: A

Anton van Leeuwenhoek, using a self-made microscope, was the first to observe and describe living cells, including bacteria and protozoa.

3. Who proposed the Cell Theory (along with Theodor Schwann) stating that all plants are made of cells?

  1. AGregor Mendel
  2. BRobert Hooke
  3. CMatthias Schleiden
  4. DRudolf Virchow
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Answer: C

Matthias Schleiden (botanist) and Theodor Schwann (zoologist) together proposed the Cell Theory in 1838-39.

4. Who added to the Cell Theory the principle that all cells arise from pre-existing cells ('Omnis cellula e cellula')?

  1. AMatthias Schleiden
  2. BCharles Darwin
  3. CTheodor Schwann
  4. DRudolf Virchow
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Answer: D

Rudolf Virchow extended the Cell Theory in 1855 by stating that all cells arise from pre-existing cells through cell division.

5. What term describes a cell that lacks a true, membrane-bound nucleus, such as bacteria?

  1. AProkaryotic cell
  2. BEukaryotic cell
  3. CGamete cell
  4. DSomatic cell
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Answer: A

Prokaryotic cells (e.g., bacteria, archaea) lack a membrane-bound nucleus and most membrane-bound organelles.

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