Technology has allowed us to not only see detailed structure of organelles, but it has also allowed us to see molecular machines, carrying out highly sophisticated tasks.
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              The above statement is true.

Explanation:

                     Yes technology has allowed us not only to study the detailed structure of an organelle but also the molecular function perform by an organelle. e.g by using technology we easily study the molecular function of an organelle  as that of mitochondria is energy production we study it by technology like differential centrifugation is used to isolate the organelle and used to study its function. Different type of staining microscopes are used to study the organelle and to isolate them and study their basic function. Gel electrophoresis is a technique use to study DNA.

answer; ///i believe the answer your looking for is (ribosomes);

not sure if this what   you'r looking for would be percent composition