Class XI

Who used the word ‘protoplasm first time for living cells?(
  1. Robert Hooke
  2. Leeuwenhoek
  3. Purkinje
  4. Robert Brown
Which of the following organelle is present onion cells but not in human cheek cells?
  1. cell wall
  2. cytoplasm
  3. nucleus
  4. plasma membrane
Which organelle is the power house of the cells?
  1. Plastids
  2. Mitochondria
  3. Golgi
  4. Nucleus
Which organelle is considered as a suicide bag?
  1. Centrosome
  2. Mesosomes
  3. Lysosomes
  4. Chromosome
Chromosomes are made up of nucleic acid and ____
  1. Phosphorus
  2. Protein
  3. Sugar
  4. Calcium
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