* Bacterial flagella are helical filaments, each with a rotary motor at its base which can turn clockwise or counterclockwise.

* Bacterial flagella grow by the addition of flagellin subunits at the tip ; archaeal flagella grow by the addition of subunits to the base.

* Polar organelle, a specialised region of the cell membrane found surrounding the flagella base ( s ) in some bacteria

The sperm have a complex multi-layered structure, which is a continuous belt of basal bodies that form the base of several thousand flagella which actually have a cilia-like motion.

They are members of the phylum Euglenozoa and their major distinguishing feature is the presence of a kinetoplast, a DNA-containing granule located within the single mitochondrion associated with the base of the cell's flagella ( the basal body ).

The kinetoplast is found at the base of a cell's flagella and is associated to the flagellum basal body by a cytoskeletal structure.

Each cell has two flagella with two contractile vacuoles at their base, an eyespot, and a large cup-shaped chloroplast with at least one pyrenoid.

For a brief period each year, the rays of the sun are warm enough to melt some of the snows piled a mile deep at the base of the headwalls, and then the pinnacles glisten in the daytime at high noon, and billions of gallons of water begin their slow seepage under the glaciers and across the rockstrewn hanging valleys on their long, meandering journey to the sea -- running east past the sky-carving massifs of Gurla Mandhata and Kemchenjunga, then turning south and curling down through the jungles of Assam, past the Khasi Hills, and into Bengal, past Sirinjani and Madaripur, until the hard water of the melting snows mingles with the soft drainage of fields and at length fans out to meld with the teeming salt depths of the Bay of Bengal.

I asked the same questions inside the launch-control rooms of an Atlas missile base in Wyoming, where officers who wear sidearms are manning the `` commit buttons '' that could start a war -- accidentally or by design -- and in the command centers where other pistol-packing men could give orders to push such buttons.

Since accurate base maps are necessary for any planning program, the first step taken by the planning division to implement the long-range state plan has been to prepare two series of base maps -- one at a scale of 1 inch to a mile, and the second a series of 26 sheets at a scale of 1 inch to 2000 feet, covering the entire state.

Beginning in 1960, the matching requirements for the base allotment are being adjusted ( upward or downward, as required ) 25% a year, so that by 1963 the entire support allotment will be matched on the basis of a 40% pivot State share, with maximum and minimum State shares of 50% and 30%, respectively.

But the facts about our Advisory Board and its members' duties are only one of several sets of facts about the quest for advice, both reliable and imaginative, on which to base our selections of Fellows.

The defining objectives of alchemy are varied ; these include the creation of the fabled philosopher's stone possessing powers including the capability of turning base metals into the noble metals gold or silver, as well as an elixir of life conferring youth and immortality.

The base and crown of these are composed of dentine separated by an uncalcified layer and they are replaced at intervals.

In an appeal on the record from a decision in a judicial proceeding, both appellant and respondent are bound to base their arguments wholly on the proceedings and body of evidence as they were presented in the lower tribunal.

The Brønsted-Lowry definition is the most widely used definition ; unless otherwise specified acid-base reactions are assumed to involve the transfer of a proton ( H < sup >+</ sup >) from an acid to a base.

Reactions of acids are often generalized in the form HA H < sup >+</ sup > + A < sup >−</ sup >, where HA represents the acid and A < sup >−</ sup > is the conjugate base.

The numerical value of K < sub > a </ sub > is equal to the concentration of the products divided by the concentration of the reactants, where the reactant is the acid ( HA ) and the products are the conjugate base and H < sup >+</ sup >.

The ears are disproportionately long, and the tail is very thick at the base and gradually tapers.

Almost all species have a tight cluster of leaves ( a rosette ), either at the base of the plant or at the end of a more-or-less woody stem ; the leaves are less often produced along the stem.

The flowers are in the main not particularly distinctive, being of a general ' lily type ', with six tepals, either free or fused from the base.

If nectaries are present, they are in the septa of the ovaries rather than at the base of the tepals or stamens.

There are large bracts at the base of the inflorescence.

The individual flowers are small, with tepals joined at the base.

The leaves form a rosette at the base of the plant, and are alternate, distichous, flat, sessile, simple, linear or lanceolate, and parallel veined, with entire margins.

Most Apiaceae are annual, biennial or perennial herbs ( frequently with the leaves aggregated toward the base ), though a minority are shrubs or trees.

The longest axons in the human body, for example, are those of the sciatic nerve, which run from the base of the spine to the big toe of each foot.

In practice, some alloys are used so predominantly with respect to their base metals that the name of the primary constituent is also used as the name of the alloy.

A similar proportion, when moved experimentally a distance of, found their way back to their home base.

George I. Sanchez, " Arithmetic in Maya ", Austin-Texas, 1961 found another base 5, base 4 abacus in the Yucatán that also computed calendar data.

The neck was designed to be inserted in a torso, but no statue, base or inscription was found.

Aside from the genetic material of the cell, nucleic acids often play a role as second messengers, as well as forming the base molecule for adenosine triphosphate, the primary energy-carrier molecule found in all living organisms.

In addition, these insect symbionts have similar patterns of genome evolution to those found in true organelles: genome reduction, rapid rates of gene evolution, and bias in nucleotide base composition favoring adenine and thymine, at the expense of guanine and cytosine.

Affiliated with the Smithsonian Institution, it was long essentially a traveling exhibit until it found a permanent home in 2011 on a former Army communications base outside Washington.

These specimens are the earliest known relatives of modern salamanders, and together with the numerous other basal groups of salamanders found in the Asian fossil record, they form a concrete base of evidence for the fact that “ the early diversification of salamanders was well underway ” in Asia during the Jurassic period.

Nonetheless, only the limitations of an underlying knowledge base affect the ease with which inferences may ultimately be made ( once the appropriate KR has been found ).

As women found each other, they formed into tight groups on base, socialized at service clubs, and began to use code words.

Several European institutions have found their base in Maastricht.

Other cell types, such as trypanosomatid parasites, have a MTOC but it is permanently found at the base of a flagellum.

In 1961, Joan Oró found that the nucleotide base adenine could be made from hydrogen cyanide ( HCN ) and ammonia in a water solution.

The remains of 25 people were found in a cave at the base of the cliff.

Freshwater can be found in Buada lagoon, and also in some brackish ponds at the escarpment base in Ijuw and Anabar in the northeast.

The last survivor, a fifteen-year-old girl found under the base of the collapsed building, was rescued at about 7: 00 pm CST.

On average, only 3 of the 6 base pairs in each consensus sequence is found in any given promoter.

Further, while nucleotides were not found in Miller-Urey's origins of life experiments, their formation in prebiotically plausible conditions has now been reported, as noted above ; the purine base known as adenine is merely a pentamer of hydrogen cyanide.

For much of her career, Dean's political base was the very active network of Berkeley neighborhood organizations, however many of her critics and rivals found her to be too conservative.

Although the Caliphs did not receive revelation directly from God like the Prophet did, they were still required to base all of their decrees on some evidence found in the revealed text.

However, such a tail highly flexible at the base but intensely stiffened elsewhere particularly against vertical movement is only found in association with the predatory foot claw ( to a lesser extent in troodonts ), and its design suggests and allows its use as an aid to the efficiency of the 2nd toe claw.

Vermouth is used as an ingredient in many different cocktails, as people found it ideal for lowering the alcohol content of cocktails with strong spirits as their base, for providing a pleasant herbal flavor and aroma, and for accentuating the flavors in the base liquor.

X-Factor rescued Nathan from Apocalypse's lunar base, but found him infected with a " techno-organic " virus that could not be treated in the present time.

The element is normally found in association with other base metals such as copper and lead in ores.