Cell organelles are separated by the method of . . . . . . .

Mitochondria and chloroplasts:
$(a)$ Are semi-autonomous organelles.
$(b)$ Are formed by the division of pre-existing organelles. They contain $DNA$,but lack protein-synthesizing machinery.
Which of the following options is correct?

Match the items in Column-$I$ with Column-$II$ and select the correct option:

Column-$I$	Column-$II$
$(A)$ Microfilament	$(i)$ Glycocalyx
$(B)$ Microtubule	$(ii)$ Actin
$(C)$ Flagella	$(iii)$ Tubulin
$(D)$ Bacterial cell envelope	$(iv)$ Flagellin

Which technique in cell biology utilizes ultrasonic sound waves?

Statement $P$: The middle lamella is composed of cellulose plates.
Statement $Q$: During the formation of gametes,cell division occurs by mitosis.

The magnification power of a light compound microscope depends on .........