A) ribosomes
B) microtubules
C) episomes
D) mitochondrial membrane.
Correct Answer: A
Solution :
: Ribosomes are the amembranous cell organelles, discovered by Palade, present in the cytoplasm in the form of groups, called polysome. Ribosome are made up of ribonucleoprotein and on the sedimentation value they are of two types\[-70s\] and 80s. The ribosomes contain 40-60% RNA and the rest is protein. RNA makes the core and protein forms its covering/They are the seat of protein synthesis.
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