They laid great stress on the nitrogenous nature of protoplasm, and noted that it preceded the formation of the cell-membrane.
By the segmentation of the fertilized egg, now invested by cell-membrane, the embryo-plant arises.
The cell-membrane may become modified by the process of lignification, suberization, cuticularization or gelatinization.
The bacterial cell is always clothed by a definite cell-membrane, as was shown by the plasmolysing experiments of Fischer and others.
Cell-membrane, &c.: Biitschli, Weitere Ausfuhrungen uber den Bau der Cyanophyceen and Bakterien (Leipzig, 1896); Fischer, Unters.
The Nature of the Organization of Ilte Plant, and the Relations of the Cell-Membrane and the Protoplasm.This view of the structure of the plant and this method of investigation lead us to a greatly modified conception of its organization, and afford more completely an explanation of the peculiarities of form found in the vegetable kingdom.
embedded in the cell membrane.
They are called phytoesterol and make up the cell membrane of certain plants.
The disease somehow blocks the flow of electrical impulses across the muscle cell membrane.
pores in the cell membrane letting in the foreign DNA.
Their striated appearance is due to the many long folds of the cell membrane.
The antibiotic shows strong affinity for ergosterol in the fungal cell membrane.
malaria parasite antigens exposed on the surface of the infected red blood cell membrane.
They then replace and finally destroy the cell membrane of the host, releasing more chlamydiae to continue the infection process.
Acetylcholine receptors are integral proteins that respond to the neurotransmitter acetylcholine by opening a pathway in the membrane for ion diffusion across the cell membrane.
with another similar protoplast, which constitutes what we call fertilization, the next stage in complexity already noted may be observed, the protoplasm becoming clothed by a cell-membrane.
von Nageli's investigations on molecular structure and the growth of the cell membrane we recognize the origin of modern methods of the study of cellstructure included under cytology.
Too high a concentration of calcium can kill brain cells, so these pumps in the cell membrane push the calcium out quickly.
We are also studying the ion channels that regulate calcium movements across the cell membrane using patch clamp electrophysiology.
By contrast PrPc, the normal prion, is ubiquitous; a cell membrane glycoprotein found on and in all cells studied.
Vitamin E also plays an important role in supporting cell membrane structure and maintaining health of eyes, skin, hair, circulation, red blood cells, muscles and nerves.
cytoplasm cell membrane nucleus cell wall 7 Which structure controls what enters and leaves a cell?
They are not really living organisms according to general understanding, since they lack the cell membrane that is associated with living cells.
This complex spans the muscle cell membrane to unite a fibrous network on the interior of the cell with a fibrous network on the outside.
A nerve cell contains a high concentration of potassium salt whilst the chemical composition outside the cell membrane is higher in sodium salt.
striated appearance is due to the many long folds of the cell membrane.
This hapten can conveniently be coupled to carriers such as soluble proteins, cell membrane proteins or to membrane soluble lipid anchors.
Malaria parasite antigens exposed on the surface of the infected red blood cell membrane.
Select your answer ----------------- cell wall nucleus cytoplasm cell membrane 5 Which of the following types of cell is a plant cell?
At high hydrogen concentrations the microorganism would allow hydrogen ions to leak through the cell membrane.
The cell membrane reforms between the two groups, thus forming two new ' daughter ' cells.
Antioxidants directly counteract this by strengthening cell membrane integrity or disrupting the formation of free radicals.
ergosterol in the fungal cell membrane.
The whole of these living structures are covered externally by the dead cell-membrane (fig.
X c is a measure of the volume of the cell membrane capacitance and an indirect measure of intracellular fluid volume.
HaberIandt has shown that in plant cells, when any new formation of membrane is to take place in a given spot, the nucleus is found in its immediate vicinity; and Klebs found that only that portion of the protoplasm of a cell which contains the nucleus is capable of forming a cell-wall; whilst Townsend has further shown that if the non-nucleated mass is connected by strands of protoplasm to the nucleated mass, either of the same cell or of a neighboring cell, it retains the power of forming a cell-membrane.
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