Sentences with phrase «by cell membranes»

Cell contents are separated and protected from the external environment by cell membranes.

Heat tolerance in food legumes as evaluated by cell membrane thermostability and chlorophyll fluorescence techniques.

As lipid droplets exit the mammary epithelial cell, they are enveloped by cell membrane and secreted into milk as membrane - bound globules of fat.

Structures formed by a cell membrane - associated arabinogalactan - protein on graphite or mica alone and with Yariv phenylglycosides.

Not exact matches

Molecular biology, contrary to the article, does not support evolution by natural chance because evolution can not occur without inheritance, inheritance can not occur without DNA and DNA is so complex it could not have evolved by chance unless we are to assume that molecules just happened to arrange themselves into the DNA molecule at the same times as a nucleus formed to hold the DNA, at the same time as the cell membrane just happened to form around it, at the sametime as all the cell maintaining process in the cytoplasm just happened to come into existence to form a single cell and that all these aspects just happened to come together and work harmoniously.

Animal cells within the meat are surrounded by a thin membrane that is easily dissolved by digestive juices, however, when cooked quickly and at high temperatures, this membrane will toughen, slowing digestion and impairing nutrient uptake.

Put them in the stock while still frozen, and they'll release their juices within minutes, because the cell membranes will have been broken up by the freezing process.

Avocado oil is also a common ingredient in natural skin care products because its essential fatty acids make skin soft and smooth by contributing to building healthy cell membranes.

Omega 3 fatty acids are one of the most beneficial to skin health as they control the oil production, and delay the skin's aging process by nourishing skin cell membranes and preventing wrinkles!

Cinnamon helps our body to stabilize blood sugar by de-inflaming the cell membranes and enhancing insulin receptor activity.

Fermentation by intestinal probiotics leads to enhanced production of short - chain fatty acids, including butyrate, which is a major energy source for the intestinal cell membrane; propionate, which is involved in regulating cholesterol; and acetate, which is involved in cholesterol synthesis.

Vitamin E (mainly tocopherol) is an antioxidant, protecting cell membranes and lipoproteins from oxidative damage by free radicals.

Cells were lysed and membrane and cytosolic fractions separated and EGFR abundance determined by Western blot.

These blisters are an attempt by the mucous membrane to sacrifice the top layer of cells and cushion deeper layers with a protective bubble of pus, Bosland said.

Vitamin E is a powerful antioxidant and has been found to reduce the effects of sun exposure on the skin by modifying the photoaging process and protecting skin cell membranes.

Put them in the stock while still frozen, and they'll release their juices within minutes, because the cell membranes will have been broken up by the freezing process.

However, the use of the question on consumption of oily fish as an indicator of maternal DHA status is supported by the correlation between the frequency of intake of oily fish with the amount of DHA in the maternal red blood cell membranes (Figure 1).

Because of the rapidity with which it occurs (less than a tenth of a second) the researchers argue that this influx is caused by micro-tears in cell membranes ripped open by the force of the micro-explosion;

And a new analysis of the STEP trial, published last November in Proceedings of the National Academy of Sciences USA, provides a warning that the very vectors (adenoviruses, which are also employed in other vaccine development work) used to distribute the inactive HIV strains can actually make the immune system more vulnerable to infection by recruiting susceptible T cells to mucous membranes, where they are more likely to be infected during sexual activity.

Not that that's necessarily the very first way Darwinian systems began, but at some point they had to transition into a system more related to modern biology where cells are all bounded by membranes.

The plasma membrane of hepatic parenchymal cells contains an adenyl cyclase system that is stimulated by glucagon.

When calcium was administered directly into the cytoplasm, however, the IgG - treated cells exhibited normal exocytotic secretion, as assayed by membrane capacitance measurement.

By adjusting the opening or closing of channels in cell membranes, opsins can switch neurons on or turn them off.

All living cells are held together by membranes, which provide a barrier to the transport of nutrients.

Thus, transport of peptide — MHC II complexes by DCs not only accomplishes transfer from late endocytic compartments to the plasma membrane, but does so in a manner that selectively concentrates TCR ligands and costimulatory molecules for T cell contact.

Both organelles are surrounded by a double celled composite membrane with an intermembrane space; both have their own DNA and are involved in energy metabolism; and both have reticulations, or many infoldings, filling their inner spaces.

Second, eukaryotes contain various organelles, internal compartments partitioned off from the rest of the cell by membranes.

All cells are bounded by a membrane of their own making.

DHA (docosahexaenoic acid) occurs naturally in cell membranes with the highest levels in brain cells, but levels can be increased by diet or supplements.

A team led by Carnegie's Wolf Frommer has revealed how membrane proteins were networked with each other and with the signaling proteins inside the cell.

In order to describe the mechanism of a membrane sensor which measures the degree of lipid saturation in the yeast cell, the researchers used genetic and biochemical methods and simulated the motions and underlying forces of membrane lipids over a period of a few milliseconds by means of extensive molecular dynamic simulations.

Among the compounds most vulnerable to attack by free radicals are the polyunsaturated fatty acids (PUFAs) vital to the structure and function of cell membranes.

A few microscopic techniques can focus light deep into the intact brains of dead animals to study its structure without damaging the axons, but much of this light is scattered away by the fatty lipid membranes that surround individual cells, making the technique less than perfect.

• MEDICINE Scientists have designed a nanoparticle capable of destroying bacterial cells by piercing their membranes.

Further animal studies by Kipnis and others show that learning new tasks triggers a mild stress response within the brain, which prompts CD4 cells to rally to the meninges, the membranes that surround the brain.

Eukaryotes are the most structurally complex known cell type, and by definition are in part organized by smaller interior compartments, that are themselves enclosed by lipid membranes that resemble the outermost cell membrane.

MP1 acts against microbial pathogens by disrupting the bacterial cell membrane.

Most cancer chemotherapy relies on cells absorbing drugs by diffusion across the cell membrane.

The more primitive virus, however, carries no repair mechanisms; a new virion (complete virus) acquires lipids for its envelope by literally ripping them off of the cellular membrane as it buds off from the infected cell.

Inside the reactor, the cell - and - chemical mixture is surrounded on three sides by polycarbonate; on the fourth side is a flexible and gas - permeable silicone rubber membrane.

Each human cell is surrounded by a lipid membrane, a molecular barrier that serves to contain the cellular machinery and protect it from the surrounding elements.

All mammalian cells are surrounded by a membrane covered in polyvalent choline phosphate, or PC - groups, that repel aqueous particles, protecting the cell from the environment.

«By properly connecting these membranes via bars, and by using eight such three - dimensional crosses within one unit cell, it's possible to obtain an isotropic effective volume increase upon increasing the pressure — a negative effective compressibility.&raquBy properly connecting these membranes via bars, and by using eight such three - dimensional crosses within one unit cell, it's possible to obtain an isotropic effective volume increase upon increasing the pressure — a negative effective compressibility.&raquby using eight such three - dimensional crosses within one unit cell, it's possible to obtain an isotropic effective volume increase upon increasing the pressure — a negative effective compressibility.»

Enamel defects can be caused by genetic mutations affecting either the STIM1 calcium sensor in the endoplasm reticulum or in the ORAI channel in the cell membrane.

The key discovery made by the CSHL team is that FER is able to activate a receptor on the surface of ovarian cells «from below,» as it were — by interacting with a portion of the receptor that penetrates the cell membrane and plunges into the cytoplasm.

By definition, gram - negative bacteria possess cell walls that consist of an outer membrane and a cytoplasmic membrane.

The engineers were able to work around the hydrogen storage problem by using non-polluting Proton Exchange Membrane (PEM) fuel cells and a process of aluminum activation patented by the paper's co-authors, Prof. Alon Gany and Dr. Valery Rosenband.

To look for a possible protein responsible for transporting iron across cell membranes, postdoctoral researcher Hiromi Gunshin and colleagues at Brigham and Women's Hospital in Boston began by feeding rats a low - iron diet.

The toxins overcome the cell membrane by binding to a surface receptor, which conveys them into the cell's interior.

Neuronal cell - glial cell adhesion was inhibited by prior incubation of the neurons with Fab» fragments of antibodies to neuronal membranes.