Air is regarded as mixture because it is composed of various gases in different composition and its composition is not fixed but vary with place and time.

The endoplasmic reticulum is an extensive, interconnected, membrane-bound network of tubes and sheets that provide a route for intracellular transport of material.

Class 9th Science Session 2022-23 Class IX Science MCQ Extra Questions Answers 9th Science Terminal Exam Based MCQ Extra Questions Class 9 Science Terminal Exams MCQ Solutions

Class 9th Science Session 2022-23 Class IX Science MCQ Extra Questions Answers Class 9 Science Terminal Exams MCQ Solutions 9th Science Terminal Exam Based MCQ Extra Questions

Liquid molecules in the cell are synthesized by the smooth endoplasmic reticulum present is the cell.