There are also other cellular components — spherosomes, episomes,
lysosomes, peroxysomes, vacuoles, etc. Some authors consider them
organelles, others — organoids. A generalized idea of plant eukaryotic cell
is given in Figure 2–75.
image
Figure 2–75. Thin section of a cell from the root tip of wheat plant (After Brian Gunning; From Alberts et al., 1986). 1 — cell wall; 2 — chloroplast; 3 — Golgi apparatus; 4 — mitochondrion; 5 — vacuole; 6 — nucleus; 7 — nucleus; 8 — ribosomes; 9 — endoplasmic reticulum.
From all stated in this Section it is not difficult to arrive at the logical
conclusion that studying the living matter (objects) should be realized by
means of methods adequate to it, i.e. in vivo. It is quite possible that
cytoskeleton does not exist really, and its part is played by the cytoplasm in
a liquid phase which in its essence bear a resemblance to a membrane-encircled
drop of “primary bouillon”, where the individual cellular organelles
are freely located and they function being connected in a common system.
There is a real necessity of introducing new methods in order to achieve in
vivo tridimensional picture of intracellular structures (like the holography).
This is the only way to avoid the non-conformity with the reality, and the
investigators will have a real idea of the building and functioning of cells.
Let us hope that during coming XXI century this dream will become usual
practice.