Question

E.R. was discovered from

• A. Liver cells
• B. Kidney cells
• C. Muscle cells
• D. Nerve cells

Answer 1

The correct option is A Liver cells

• The endoplasmic reticulum (smooth and rough) is an interconnected network of flattened, membrane-enclosed sacs or tube-like structure which are evenly distributed throughout the cytoplasm.
  
• It was first observed in the year 1897 by Garnier (named ergastoplasm) using the light microscope in the hepatocytes or liver cells which have abundant smooth endoplasmic reticulum.
  
• So, the correct answer is 'Liver cells'.