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Q 1.
The digestive enzymes of lysosome are made by?
Ans.
In RER.
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Q 2.
Who expanded cell theory in 1855, suggesting that all cell arise from pre-existing cells?
Ans.
Virchow.
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Q 3.
Which organelles is called the Protein factory of cell?
Ans.
Ribosome.
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Q 4.
Which organelles is called the Suicidal bag of cell?
Ans.
Lysosome.
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Q 5.
Examples of unicellular organisms?
Ans.
Amoeba, Bacteria, Paramecium and Chlamydomonas.
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Q 6.
Whi discovered free living cell in pond water for first time in 1674?
Ans.
Leeuwenhoek.
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Q 7.
What is the structural and functional unit of Life?
Ans.
Cell.
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Q 8.
Chromoplasts that contains chlorophyll are called?
Ans.
Chloroplasts.
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Q 9.
In which cell organelles Krebs cycle takes place?
Ans.
Mitochondria.
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Q 10.
The storage sacs in a cell for solid or liquid content are known as?
Ans.
Vacuoles.
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Q 11.
Which cells have fastest cell division?
Ans.
Liver.
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Q 12.
Internal wall if mitochondria is known as?
Ans.
Cristae.
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Q 13.
Which cells have no cell division?
Ans.
Neuron.
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Q 14.
Name the plant cell who absorb water through osmosis?
Ans.
Living cells.
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Q 15.
Name the process by which amoeba gets its food?
Ans.
Endocytosis.
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Q 16.
Full form of DNA?
Ans.
Deoxyribo Nucleic Acid.
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Q 17.
When the outermost covering of the cell separates the content of the cell from its external environment is called?
Ans.
Plasma membrane or cell membrane.
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Q 18.
Who discovered cell in 1665?
Ans.
Robert hook.
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Q 19.
Define Osmosis?
Ans.
The movement of water molecules through selectively permeable membrane of a cell.
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Q 20.
What is the colour of leucoplasts?
Ans.
White or colourless.
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