A randomization of `` ups '' and `` downs '' is more likely than ordered `` ups '' and `` downs '' in position ( 3 ) since the hydrogen atoms are well separated and so the position of one could hardly affect the position of another, and also since ordered `` up '' and `` down '' implies a larger unit cell, for which no evidence exists.

The last column shows the rate of exchange that would have been observed at a relative intensity of 4 ( 14.7 cm. distance ) calculated on the assumptions that the incident light intensity is inversely proportional to the square of the distance of the lamp from the cell and that the rate is directly proportional to the incident light intensity.

On this, she builds an `` egg compartment '' or `` egg cell '' which is filled with that famous pollen-and-nectar mixture called beebread.

The first is compiling a list of text forms, assigning an information cell to each, and replacing text occurrences with the information cell assigned to the form of each occurrence.

When an occurrence Af is isolated during text reading, a random memory address Af, the address of a cell in the X-region, is computed from the form of Af.

If cell Af has not previously been assigned as the information cell of a form in the text-form list, it is now assigned as the information cell of Af.

The form itself is stored in the next available cells of the W-region, beginning in cell Af.

the information cell Af is saved to represent the text occurrence.

If Af was assigned as the information cell for Af, the routine can detect that Af is identical to Af by comparing Af with the form stored at location Af.

The address Af is stored in the cell Af.

If Af leads to an address Af that is equal to the address computed from Af, even though Af does not match Af, the chain of information cells is extended from Af by storing the address of the next available cell in the Y-region, Af, in Af.

The cell Af becomes the second information cell in the chain and is assigned as the information cell of Af.

Each information cell in the chain contains the address of the Y-cell where the form to which it is assigned is stored.

Each cell except the last in the chain also contains the address of the Y-cell that is the next element of the chain ; ;

Hence, when the address Af is computed from Af, the cell Af and all Y-cells in its chain must be inspected to determine whether Af is already in the form list or whether it should be added to the form list and the chain.

In contrast, Gram-negative bacteria have a relatively thin cell wall consisting of a few layers of peptidoglycan surrounded by a second lipid membrane containing lipopolysaccharides and lipoproteins.

Each adult is a spherical cell around 10-20 μm in diameter surrounded by a perforated organic lorica or shell, with many radial pseudopods projecting through the holes to capture food.

Late in the summer of 388 he was back in Israel, and spent the remainder of his life in a hermit's cell near Bethlehem, surrounded by a few friends, both men and women ( including Paula and Eustochium ), to whom he acted as priestly guide and teacher.

Bacteria are surrounded by a cell wall, which provides strength and rigidity to their cells.

Others are made when an object outside of the cell is surrounded by the cell membrane.

In many cases, the bases of multiple flagella are surrounded by a specialized region of the cell membrane, the so-called polar membrane.

A hypha consists of one or more cells surrounded by a tubular cell wall.

* They are surrounded by two or more membranes, and the innermost of these shows differences in composition from the other membranes of the cell.

Each is surrounded by four membranes, and there is a reduced cell nucleus called a nucleomorph between the middle two.

The cellular structures of fruits and vegetables are foams with a closed cell geometry filled with a gel, surrounded by cell walls which are composites with an amorphous matrix strengthened by complex carbohydrate fibers.

The glaucocystophycean plastid — in contrast to the chloroplasts and the rhodoplasts — is still surrounded by the remains of the cyanobacterial cell wall.

All of these sub-cellular compartments are surrounded by one or more lipid bilayers and, together, typically comprise the majority of the bilayer area present in the cell.

The first of these proteins to be studied were the viral fusion proteins, which allow an enveloped virus to insert its genetic material into the host cell ( enveloped viruses are those surrounded by a lipid bilayer ; some others have only a protein coat ). Eukaryotic cells also use fusion proteins, the best studied of which are the SNAREs.

Micrograph showing fibrin ( dark pink amorphous material ) in a blocked vein surrounded by extravasation | extravasated red blood cell s ( right of image ).

Protoplasm is the living contents of a cell that is surrounded by a plasma membrane.

A stained lymphocyte surrounded by red blood cell s viewed using a light microscope.

The capsid is surrounded by a number of loosely associated proteins known collectively as the tegument ; many of these proteins play critical roles in initiating the process of virus reproduction in the infected cell.

Cells may be naked and embedded in mucilage, such as Chrysosaccus, or coccoid and surrounded by a cell wall, as in Chrysosphaera.

They are eukaryotic, with a cell wall composed of cellulose and plastids surrounded by two membranes.

A SWAT team composed of around 200 FBI and Park Police officers kept the pond surrounded as Watson drove his tractor around in circles, dug up part of an island in the pond, and communicated with authorities and the media on a cell phone.

Pycnogonids are so small that each of their tiny muscles consists of only one single cell, surrounded by connective tissue.

The whole village and each cell block were surrounded by stone walls.

Together they also developed a new form of voltaic cell in which the wooden trough was replaced by one of copper, thereby producing stronger currents.

So he paid a call on Barco in his cell and began their chat by stating bluntly:

The light was filtered by the soft glass window of the thermostat thus ensuring that only light absorbed by the chlorine and not by the carbon tetrachloride could enter the reaction cell.

Changes of intensity on the cell were achieved by use of a wire screen and by varying the distance of the light source from the cell.

It was possible to make estimates of the quantum yield by observing the extent of reduction of a uranyl oxalate actinometer solution illuminated for a known time in a typical reaction cell and making appropriate conversions based on the differences in the absorption spectra of uranyl oxalate and of chlorine, and considering the spectral distribution of the light source.

In series 1, the relative light intensity was varied by varying the distance of the lamp from the reaction cell over the range from 14.7 to 29.2 cm..

A third cell can be added by storing the address of another Y-cell in Af ; ;

( The address of the information cell is also supplied by the table of dictionary usage.

Hence, the description of each text occurrence can be retrieved by reading the list of text-ordered information-cell addresses and outputting the description indicated by the information cell for each occurrence.

Last week Chicago happily found its top scholar in Caltech's acting dean of the faculty: dynamic Geneticist George Wells Beadle, 57, who shared the 1958 Nobel Prize in medicine and physiology for discovering how genes affect heredity by controlling cell chemistry ( Time, Cover, July 14, 1958 ).

After metamorphosis, these organs become redundant and will be reabsorbed by controlled cell death, called apoptosis.

Axons are distinguished from dendrites by several features, including shape ( dendrites often taper while axons usually maintain a constant radius ), length ( dendrites are restricted to a small region around the cell body while axons can be much longer ), and function ( dendrites usually receive signals while axons usually transmit them ).

In comparison, the cerebellar granule cell axon is characterized by a single T-shaped branch node from which parallel fibers extend.

It is recommended by some doctors for people having low red blood cell count.

Ampicillin acts as a competitive inhibitor of the enzyme transpeptidase, which is needed by bacteria to make their cell walls.

In this way he discovered the electrochemical series, and the law that the electromotive force ( emf ) of a galvanic cell, consisting of a pair of metal electrodes separated by electrolyte, is the difference between their two electrode potentials ( thus, two identical electrodes and a common electrolyte give zero net emf ).

The battery made by Volta is credited as the first electrochemical cell.