Cellular Organelles
Chapter 2
Exercises
1. The Fluid Mosaic Model has been proposed by
(a) Robert Brown
(b) Schleiden and Schwann
(c) Robert Virchow
(d) Singer and Nicolson
2. Ribosomes are composed of
(a) only rRNA
(b) rRNA and proteins
(c) rRNA, proteins and DNA
(d) lipids, proteins and DNA
3. Tonoplast is
(a) a membrane covering the cell wall in plant cells
(b) the inner membrane of the mitochondria
(c) a membrane covering the vacuoles
(d) a membrane covering the plastids
4. Describe the various mechanisms of transport across plasma membrane with the help of labelled diagrams.
5. Match the following
6. What is the significance of the ratio of protein and lipids in membranes? How does varying the concentration of lipids in a membrane affect its function?
7. State the importance of cell wall in prokaryotic cells.
8. A eukaryotic cell contains organelles which may be bound by a single membrane; double-membrane or non-membrane bound organelles. Classify the various eukaryotic organelles into these three types.
9. Mention the different types of vacuoles.
10. Peroxisomes share similarities as well as differences with mitochondria and chloroplast. Comment.
11. What are glyoxysomes? Where are these present? Mention their functions.
12. Cell is the structural and functional unit of life. Justify the statement.
13. Distinguish between
(a) cilia and flagella
(b) primary and secondary cell wall
(c) lysosomes and vacuoles
(d) microtubules and actin filaments
(e) active and passive transport
Questions Type By: Himashree Bora.
