Question

differentiate between smooth and rough surface​

Answer 1

Answer:

Its rough appearance is given by the bound ribosomes on its surface. Rough ER synthesizes and stores proteins. ... The main difference between smooth and rough ER is that smooth ER lacks bound ribosomes whereas rough ER is bound with ribosomes.

Answer 2

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I Have Written As Well As Attached Pic of Er And Normal

rough surface is having lots of irregularities and produce more friction. e.g...a cemented floor

smooth surface is having less no. of irregularities and produce less friction .

.e.g...a marble floor

(we can reduce friction of a surface by using lubricants)