NEETBotanyCell - The Unit of Life
In 70S and 80S ribosomes, what does 'S' stand for and what does it measure?
Options
- ASvedberg's unit, representing the sedimentation coefficient; directly measures mass and volume
- BSolubility factor, representing the sedimentation coefficient; indirectly measures density and size
- CSvedberg's unit, representing the sedimentation coefficient; indirectly measures density and size
- DSvedberg's unit, representing the solubility factor; directly measures surface area and volume
Correct answer
C. Svedberg's unit, representing the sedimentation coefficient; indirectly measures density and size
Step-by-step solution
According to NCERT, in 70S and 80S ribosomes, 'S' stands for Svedberg's unit. It represents the sedimentation coefficient, which is indirectly a measure of density and size. Options stating it directly measures mass, volume, or surface area are incorrect. 'S' is not a solubility factor. Answer: Svedberg's unit, representing the sedimentation coefficient; indirectly measures density and size