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Concept of unit membrane was given by

A. Danielli and Davson

B. Singer and Davson

C. Buvat

D. Robertson

Correct Answer : D.


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  1. In the mitochondria, cytochromes are localised in
  2. Janus-green-B is used for staining
  3. Cell membranes are composed mainly of
  4. One angstrom is equal to
  5. The unit of heredity is
  6. Cellular components can be physically separated from each other by
  7.  The function of cristae in a mitochondrion is
  8. Physical basis of life is
  9. Hydroly tic enzymes are abundant in
  10. "The substance of cells is living " was firs suggested by
  11. Another name for ligase is
  12. The photosynthetic units are known as
  13. There are 46 chromosomes in humans, of which
  14. In electron microscope the source of light used is
  15. Ribosomes of plastids and mitochondria are
  16. In centriole, microtubules are arranged in this order:
  17. Lysosomes were discovered by
  18. Ribosomes are the centre of
  19. Cell organelle which has electron transport system is
  20. The nucleus of a prokaryotic cell is represented by
  21. The largest cell organelle is
  22. Cells having large nuclei in proportion of cytoplasm are perhaps
  23. The discoverers of electron microscope are
  24. Intake of liquid food by formation of food vacuoles is called
  25. The term protoplasm was termed by
  26. Cell theory was proposed by
  27. Chemical constitution of nucleus is
  28. In plant cell vacuole contains
  29. Concept of unit membrane was given by
  30. The organelles for fat synthesis are