G0 or quiescent phase is the stage where cells remain metabolically active, but do not proliferate unless called to do so. Such cells are used for replacing the cells lost during injury.
Which of the following is not correct?
(a) Robert Brown discovered the cell.
(b) Schleiden and Schwann formulated the cell theory.
(c) Virchow explained that cells are formed from pre-existing cells.
(d) A unicellular organism carries out its life activities within a single cell.
Name the components of the formed elements in the blood and mention one major function of each of them.
Name two cell-organelles that are double membrane bound. What are the characteristics of these two organelles? State their functions and draw labelled diagrams of both.
What are the functions of liver?
Define a taxon. Give some examples of taxa at different hierarchical levels.