Biology -

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Question - 1

Which of the following is not correct?

  • A Unicellular organisms have independent existence
  • B Antony von Leeuwenhoek first saw and described a live cell
  • C Robert Brown discovered the nucleus
  • D Cell theory was proposed by two British scientists Schleiden and Rudolf Virchow

Question - 2

Comparing small and large cells,Which statement is correct?

  • A Small cells have a small surface area per volume ratio
  • B Exchange rate of nutrients is fast with large cells
  • C Small cells have a large surface area per volume ratio
  • D Exchange rate of nutrients is slow with small cells

Question - 3

Which of the following first explained that new cells are formed from pre-existing cells (Omnis cellula e cellula)?

  • A Robert Hooke
  • B Robert Brown
  • C Rudolf Virchow
  • D Schleiden

Question - 4

Which one of the following is not a constituent of cell membrane?

  • A Cholesterol
  • B Glycolipids
  • C Proline
  • D Phospholipids

Question - 5

About 98% of the mass of every living organism is composed of just six elements including carbon,hydrogen,nitrogen,oxygen, 

  • A phosphorus and sulphur
  • B sulphur and magnesium
  • C magnesium and sodium
  • D calcium and phosphorus

Question - 6

Which of the following cell organelles are non-membranous and found in both prokaryotic and eukaryotic cells? 

  • A Lysosome
  • B Microbodies
  • C Ribosomes
  • D Vacuoles

Question - 7

Which ofthe following are not membrane bound cell structures?

  • A Mitochondria and chloroplast
  • B Golgi body and ER
  • C Lysosome and vacuole
  • D Centrioles and ribosomes

Question - 8

Select the wrong statement from the following

  • A both chloroplasts and mitochondria contain an inner and an outer membrane
  • B both chloroplasts and mitochondria have an internal compartment,the thylakoid space bounded by the thylakoid membrance
  • C both chloroplasts and mitochondria contain DNA
  • D the chloroplasts are generally much larger than mitochondria

Question - 9

The incorrect statement is 

  • A mycoplasma are larger than bacteria
  • B the largest isolated single cell in the egg of an ostrich 
  • C human red blood cells are 7.0 \(\mu m\) in diameter
  • D nerve cells are the longest cells in multicellular animals

Question - 10

The stain used to visualise mitochondria is

  • A fast green
  • B safranin
  • C aceto carmne
  • D janus green
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