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STD 11 - 16. Excretory product and their elimination — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 16. Excretory product and their elimination1 Mark
MCQ
For brain cells the ammonia is very toxic because
  • ✓
    Ammonia ( $N H_{4}^{* i i}$ ions) affect the brain cell functioning by changing polarity of cell membrane
  • B
    Ammonia is not very toxic to the other cell than brain cells
  • C
    Ammonia is highly stable in brain cells
  • D
    Ammonia penetrate the cell membrane of brain cells
✓

Answer

Correct option: A.
Ammonia ( $N H_{4}^{* i i}$ ions) affect the brain cell functioning by changing polarity of cell membrane
a
Ammonia $\left(N H_{4}^{+i i}\right)$ affect the brain cell by changing the polarity of cell membrane of brain. Change in polarity affects transport across the cell membrane

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