Noteworthy is the succession of Golgi apparatus in daughter cells.
There are no data in favour of its de novo origin. For the first time the
distribution of this organelle during mitosis has been observed by
Perroncito (1910) and has been called dictyokinesis, since in the course
of division it disintegrates into isolated dictyosomes, proved to be similar in
a great variety of objects.
Mitochondria
They have been discovered in the end of XIX century by Carl Benda
(Benda, 1897) and called chondriosomes. The term mitochondria
(Greek: mitos — thread and chondrion — granule) is introduced later.
Mitochondria present in all cells, except for bacteria and unicellular blue-green algae.
Usually mitochondria have elongated or round shape with dimensions
0.5—1.5 μm. Sometimes their number can be from dozens to hundreds,
depending on the physiological state of the cell, external influences or
various other reasons. Mitochondrion of an animal cell is represented in
Figure 2–65.
image
Figure 2–65. Mitochondrion in a cell of rat pancreas (Myotis lucifugus). (Cpourtesy of K. Porter; From Fawcett, 1981).
Using the methods of gradient centrifugation and the high resolving
power of electron microscopy enabled to clarify a number of important
questions regarding mitochondria structure and functions. It was
established that intact mitochondria are built of four main components —
outer membrane, inner membrane, intermembrane space and matrix.