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Q. Site of protein synthesis is

UP CPMTUP CPMT 2007Molecular Basis of Inheritance

Solution:

Ribosomes are involved in protein synthesis. Free ribosomes synthesize structural proteins which are used inside the cell. RER provides site for protein synthesis due to presence of ribosomes on it. Ribosomes attached to ER synthesize proteins for transport which are used outside the cell, integral proteins and proteins of certain organelles like golgi complex, lysosomes and plant vacuoles. Golgi apparatus functions in packaging and storage of materials. Lysosomes digest intercellular and extracellular substances. They can digest damaged or ageing cells (autolysis). So the lysosomes are called suicidal bags.