the Cage of a green plant. The sizes and the form of cages

you are: the Cage of a green plant

The Sizes of various cages vary extremely strongly - diameter of some bacteria does not reach also one micrometer (micron), the length of some extended cages is measured by millimetres (mm). Even in rather small bacterial cage contains about 1012 molecules. This monstrous complexity of basic biological unit allows to understand, why biological researches both on methods, and on accuracy of results so essentially differ usually from experiments physical and chemical where researchers often deal with such elementary units, as a separate proton or quantum.

If the vegetative cage is grown up separately its form usually comes nearer to spherical (fig. 2.2) but if it grows in an environment of other cages they squeeze it and then it takes the form of a polyhedron. The cage from a zone of a stretching of a stalk or a root under the form reminds a box in length about 50 microns, width 20 microns and height 10 microns. Its volume is equal approximately 10 000 мкм3. In one cubic centimetre (1 sm3) at dense packing is located yes such 100-106 cages. structure of a vegetative cage is difficult and vysokodifferentsirovanna, but as a first approximation we can isolate in it three main zones: 1) a cellular wall - rather rigid formation, most likely lifeless, representing vysokostrukturirovannuju and in the chemical relation a difficult mix of the substances allocated with a protolayer; 2) a protolayer - a live part of a cage in which all are concluded cellular organelly, suspendirovannye here in a difficult solution, and 3) vakuoli - lifeless formations, as though membrannye the bags serving by tanks or storehouses of a cage; they are filled by a water solution of the inorganic salts absorbed by a cage and the organic substances representing products of metabolic activity of a cage. Cellular walls at a plant play a skeleton role, i.e. Provide due rigidity and promote preservation of the form of an organism. Vakuoli also participate in performance of this function - at the expense of the pressure rendered by their contents on cytoplasm and a wall of a cage. Besides, vakuoli serve original sekretornoj as system as getting to them mateterial thereby it is effectively deduced from sphere of the active chemical transformations made in a cage. There is, thus, a protolayer, and in it it is necessary you to see arena of that continuous activity which characterises vysokoorganizovannoe and the dynamic condition called by a life.