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Solution
Ribosomes are often described as 70S or 80S , 'S' refers to Svedberg's Unit which stands for sedimentation coefficient. This unit is used to measure how fast molecules move in a centrifuge.
In case of ribosomes of chloroplasts, they are 70S , smaller than cytoplasmic ribosomes, composed of RNA.
Thus option 2 is the correct answer.
Ribosomes are often described as 70S or 80S , 'S' refers to Svedberg's Unit which stands for sedimentation coefficient. This unit is used to measure how fast molecules move in a centrifuge.
In case of ribosomes of chloroplasts, they are 70S , smaller than cytoplasmic ribosomes, composed of RNA.
Thus option 2 is the correct answer.