Class VIII

Why do we use methylene blue solution to stain animal cells?
  1. To make cell wall visible under microscope.
  2. To make mitochondria and smooth muscle cells visible.
  3. To stain lipids black.
  4. To make nuclei visible.
Small spherical bodies in the nucleus are called
  1. Nucleolus
  2. Lysosomes
  3. Ribosomes
  4. Air bubbles
The shape of amoeba is irreregular  because of ?
  1. Cell wall
  2. Tissues
  3. Membrane
  4. Pseudopodia
When did Robert Hooke discovered cell in the slices of cork?
  1. 1665
  2. 1663
  3. 1685
  4. 1655
Cellular organelles containing hydrolytic enzymes are called ?
  1. Lysosomes
  2. Ribosomes
  3. Mesosomes
  4. None of these
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