(n.) A disposition to turn or incline towards the earth; the influence of gravity in determining the direction of growth of an organ.
Example Sentences:
(1) On the basis of analysis of theoretical proposals and experimental investigations of the molecular mechanism of perception and realization of the gravity stimulus, a hypothesis was developed that the key factor in the development of geotropic reaction is an interaction of cell organelles with membranes of the endoplasmic reticulum as a result of their sensing the gravity stimulus.
(2) The conspicuous negative geotropism in the leaves of A. mexicana causes the formation of basal deposits of water, which play an important functional role in survival.
(3) The substances (Tables I leads to III) prepared by fusion of the required anhydride and amine were tested to evaluate the negative geotropic effect on germinating roots of Lens esculenta Moench s.1.
(4) Twenty-four cases (77.4%) showed more than two of the following four types which are listed in serial order of occurrence: spontaneous (or direction-fixed positional) nystagmus toward the involved ear; geotropic direction-changing positional nystagmus; spontaneous (or direction-fixed positional) nystagmus toward the opposite ear; and apogeotropic direction-changing positional nystagmus.
(5) In many biological systems mechanical forces regulate gene expression: in bacteria changes in turgor pressure cause a deformation of the membrane and induce the expression of osmoregulatory genes; in plants gravity regulates cell growth ('geotropism'); in mammals stretching a muscle induces hypertrophy which is accompanied by qualitative changes in protein synthesis.
(6) Rolling the patient onto the other side provokes a left intense geotropic nystagmus.
(7) Typical hairy root traits, high growth rate, branching and, most noticeably, absence of geotropism, were shown by roots containing rolB alone, while roots with rolA + B + C were geotropic as normal carrot roots.
(8) The authors take into account two different types of stationary, persistent and direction-changing nystagmus (ny): 1) the horizontal bidirectional ny (nyOB), apogeotropic (nyOBA) and geotropic (nyOBG); 2) the tridirectional apogeotropic ny (nyAT).
(9) Henry), depleted of amyloplast starch by incubation at 30 degrees C with gibberellin plus kinetin, retained their geotropic responsiveness.
(10) Basic work carried out recently on the role of the structural-functional condition of cell organelles in the development of geotropic reaction in higher plants is reviewed.
(11) The radicles of both plant species treated with these compounds at concentrations higher than 1.0 x 10(-4) M showed negative geotropism, even though germination occurred.
(12) In the early period after its administration, geotropic type positional nystagmus was induced.
(13) Plants containing the left T-DNA (TL) of Agrobacterium rhizogenes show a variety of developmental abnormalities that include severely wrinkled leaves, loss of apical dominance, reduced geotropism of roots, reduced internode distances, and floral hyperstyly.
(14) It was found that substances (I), (VII), (VIII) and (IX) showed negative geotropic effect of the same order of magnitude as that of the reference substance (alpha-naphthylphthalamic acid).
(15) The simultaneous appearance of geotropic and pre-emergence phytotoxic activity seems to be connected with the presence of an 8-quinoline residue on the amide nitrogen.
(16) Results of a neuromuscular screen indicated changes in gait, righting reflex, grip strength and performance of the negative geotropism test.
(17) The nyOB was present in 177 patients as follows: apogeotropic ny in 128 and geotropic in 49.
(18) Rapid rolling onto one side in recumbent position provokes a paroxysmal, purely horizontal and geotropic nystagmus which nearly always spontaneously inverts direction.
(19) N-Quinolinphthalamic acids and allied substances have been prepared and studied for negative geotropic effect and phytotoxic activity.
(20) Three patients with complete sudden unilateral hearing loss suffered from delayed vertigo and presented a strong geotropic positional nystagmus during the evolution of their disease.
Gravity
Definition:
(a.) The state of having weight; beaviness; as, the gravity of lead.
(a.) Sobriety of character or demeanor.
(a.) Importance, significance, dignity, etc; hence, seriousness; enormity; as, the gravity of an offense.
(a.) The tendency of a mass of matter toward a center of attraction; esp., the tendency of a body toward the center of the earth; terrestrial gravitation.
(a.) Lowness of tone; -- opposed to acuteness.
Example Sentences:
(1) Urinalysis revealed a low pH, increased ketones and bilirubin excretion, dark yellowish change in color, the appearance of "leaflet-shaped" crystals and increased red blood cells and epithelial cells in the urinary sediment, increased water intake, decreased specific gravity and decreased sodium, potassium and chloride in the urine.
(2) Phycomyces sporangiophores respond to four distinct physical stimuli: gravity, light, stretch, and an avoidance stimulus.
(3) Human granulocytes from the peripheral blood of healthy donors were subjected to transient gravity sedimentation analysis in Ficoll density gradient columns (37 degrees C) containing different concentrations of Escherichia coli endotoxin-activated serum and medium 199.
(4) In contrast, large territories may reflect widespread motor-unit actions, advantageous in force development where fine movement control is less important, as in biting in the intercuspal position or opposing gravity.
(5) The ball sat up; gravity would bring it down again and, when it did, he would score.
(6) Recent data on smoking patterns in the USA are listed and the gravity of the effects of passive smoking is brought out.
(7) Data were obtained on hen-day egg production, egg weight, egg mass, egg specific gravity, Haugh units, feed consumption, and feed efficiency.
(8) Egg production and egg specific gravity were correlated to D3 level in a quadratic fashion.
(9) "I am not trying to minimise the gravity of these offences, just simply make the observation that a sense of proportion needs to be maintained.
(10) Five experiments were conducted using 36 dietary treatments to compare chloride salts and HCl as chemical sources of Cl for the adjustment of dietary Cl when using sodium aluminosilicate (SAS), to compare SAS to natural zeolites (clinoptilolite and mordenite), and to determine the appropriate level of dietary SAS for optimum egg specific gravity.
(11) Specific gravity was only intermittently affected by dietary salt removal.
(12) Host cells were isolated by enzymatic disaggregation of the tumor and fractionated by sedimentation velocity at unit gravity on a Ficoll gradient.
(13) Because the contribution of position represents the additive effect of gravity between two opposite positions, the contribution of gravity to perfusion heterogeneity in one position may be as little as 4%.
(14) Was he being put forward as the foremost literary novelist of his generation, one whose best-known work stands comparison with The Naked and the Dead , Gravity's Rainbow , American Pastoral , Beloved and Underworld ?
(15) Fully 45 of these patients (92%) were operated on in emergency conditions and the choice of the operation was imposed by the gravity of the lesions observed.
(16) A brief image from the television feed before the gravity of the situation became apparent – as a physio reaches and tries to turn over the stricken midfielder – was widely available, especially in postings from outside the UK, where the match was shown on other networks.
(17) The three-dimensional displacements of the center of gravity were computed by the integration of force plate data.
(18) The diagnosis of gravity rests on the measurement of the mean gradient by applying Bernouilli's equation and the point by point quadratic transformation of the transmitral velocity curve obtained by Doppler and the measurement of the mitral area either by measurement of the half-decrease time in pressure or by applying the continuity equation.
(19) Tabulations of the constituents, elemental compositions, specific gravities, and the photon and electron interaction characteristics of 64 materials are given together with recommendations of systems having useful simulation properties.
(20) Hyponatremia complicates ascitic hepatic cirrhosis with frequency and gravity related to the gravity of the cirrhosis itself.