EasyBiology
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Which of the following cell organelles is non-membrane bound and found in both prokaryotes and eukaryotes?
A
Lysosomes
B
Ribosomes
C
Centrioles
D
Mitochondria
Explanation
Ribosomes are the granular structures first observed under the electron microscope as dense particles by George Palade (1953). They are composed of ribonucleic acid (RNA) and proteins and are not surrounded by any membrane.
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