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Cell membrane is

A. permeable

B. semipermeable

C. selectively permeable

D. impermeable

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  1. The accumulation of stress along the boundaries of lithospheric plates results in which of the following?
  2. Quartz crystals normally used in quartz clocks etc. is chemically
  3. The element present in the largest amount in rocks and minerals is
  4. Pollination by birds is called
  5. The fastest acting enzyme in the biological kingdom is
  6. The solar eclipse occurs when
  7. Which of the following is most likely to cause a rise in the average temperature of earth's atmosphere…
  8. According to Daltons atomic theory the smallest particle which can exist independently is
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  10. Epoxy resins is used as
  11. Which of the following is the lightest metal ?
  12. Bromine is
  13. The recent atomic weight scale is based on
  14. One fathom is equal to
  15. The formula of Plaster of Paris is
  16. Permanent hardness of water can be removed by adding
  17. Which of the following elements is a metal
  18. The major ingredient of leather is
  19. Apparatus invented by Archimedes is :
  20. Nitrification means
  21. In an atomic nucleus, neutrons and protons are held together by
  22. When a gas is turned into a liquid, the process is called
  23. The smallest functional and structural unit of kidney is called as
  24. The Panda belongs to the same family as that of
  25. The speed of light with the rise in the temperature of the medium
  26. Glass is made from the mixture of
  27. The location and energy of an electron in an atom can be specified by
  28. Earth's seasons are caused by which of the following?
  29. Which of the following elements is obtained from sea weeds ?
  30. Lightening cause rainfall because