The Fundamental Unit of LifePractice Questions & MCQs
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Q1. A history teacher shows a thin slice of cork viewed under a 1665 microscope, revealing tiny box-like compartments; which scientist made this observation and coined the word for these boxes?
- A.Robert Hooke
- B.Matthias Schleiden
- C.Robert Brown
- D.Anton van Leeuwenhoek
Answer: A. Robert Hooke
In 1665 Robert Hooke examined cork, saw box-like walls of dead cells, and named each box a 'cell'. Answer: Robert Hooke.
Q2. An exhibit panel says a researcher discovered a dense rounded body inside orchid cells in 1831 and gave it a lasting name; which structure and person does the panel describe?
- A.The chloroplast, by Robert Brown
- B.The cytoplasm, by Robert Hooke
- C.The nucleus, by Leeuwenhoek
- D.The nucleus, by Robert Brown
Answer: D. The nucleus, by Robert Brown
Robert Brown in 1831 observed and named the nucleus. Answer: nucleus, by Robert Brown.
Q3. Two scientists working in 1838 and 1839 proposed that all plants and all animals are built from cells; which pair is credited with this unifying idea?
- A.Schleiden and Schwann
- B.Purkinje and Golgi
- C.Hooke and Leeuwenhoek
- D.Brown and Virchow
Answer: A. Schleiden and Schwann
Schleiden (plants, 1838) and Schwann (animals, 1839) proposed the cell theory. Answer: Schleiden and Schwann.
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