Question 5
Different cells have different sizes. Arrange the following cells in an ascending order of their size. Choose the correct option among the followings.
I. Mycoplasma II. Ostrich eggs
III. Human RBC IV. Bacteria
(a) I, IV, III, II (b) I, II, III, IV
(c) II, I, III, IV (d) III, II, I, IV
(a) represents the correct ascending order of cell's size.
Cells in organism vary greatly in their size, shapes and activities.
I. Mycoplasmas are the smallest cell with size only 0.3 mm.
II. Bacterial cell are of size 30-5 μm.
III. In human rd blood cells are of about 7.0 μm in diameter.
IV. Ostrich eggs are among the largest cells with size (15×13)cm.
Mycoplasma Like Organisms (MLOs) or mycoplasma are the smallest cell followed by the size of bacterial cell, then RBCs and ostrich egg cell is the largest known cell.