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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. There are 46 chromosomes in humans, of which
  2. The cell size is dependent upon
  3. The discoverers of electron microscope are
  4. Mitochondria were first observed in striated muscle cells by
  5. The nucleus of a plant cell was discovered by
  6. Lysosomes were discovered by
  7. The term protoplasm was termed by
  8. Electron microscope has revealed the presence of
  9. Function of Golgi bodies in plants is
  10. Hydroly tic enzymes are abundant in
  11. The nucleus of a prokaryotic cell is represented by
  12. Cell membranes are composed mainly of
  13. According to cell theory
  14. Extranuclear DNA is found in
  15. One of the following is a single-membraned structure:
  16. One angstrom is equal to
  17. The "chromosome theory of heredity" was given by
  18. Cell organelle which has electron transport system is
  19. In plant cell vacuole contains
  20. Physical basis of life is
  21. Carbohydrate is synthesized from fat within
  22. Ribosomes of plastids and mitochondria are
  23. Unstained living tissues of a cell can be examined by
  24. Cells having large nuclei in proportion of cytoplasm are perhaps
  25. In the mitochondria, cytochromes are localised in
  26. In electron microscope the source of light used is
  27. "The substance of cells is living " was firs suggested by
  28. In centriole, microtubules are arranged in this order:
  29. The photosynthetic units are known as
  30. Chemical constitution of nucleus is