exponential growth

(redirected from logarithmic phase)
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exponential growth

[‚ek·spə′nen·chəl ′grōth]
(microbiology)
The period of bacterial growth during which cells divide at a constant rate. Also known as logarithmic growth.
(science and technology)
The increase of a quantity x with time t according to the equation x = Ka t , where K and a are constants, a is greater than 1, and K is greater than 0.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

exponential growth

change in a variable (e.g. population – see MALTHUS) where the increase is geometric, i.e. at an increasing ratio.
Collins Dictionary of Sociology, 3rd ed. © HarperCollins Publishers 2000

exponential growth

Extremely fast growth. On a chart, the line curves up rather than being straight. Contrast with linear. See rice and chessboard legend.
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References in periodicals archive ?
Bacterial growth curve of ts17 is shown in Figure 2, which indicates 0-4 h of lag phase, 4-10 h of logarithmic phase and 12 h of stationary phase.
coli cells at the logarithmic phase were more sensitive to the NTP than those at the stationary and declining phases, according to the scientists.
They defined them as "substances produced by micro organisms which promote the growth of other micro organisms." (2) They also demonstrated that several species of protozoa, during their logarithmic phases of growth, produce substances that prolong the logarithmic phase in other species.
Therefore [DELTA]F [greater than or equal to] 0 in the logarithmic phase increase.
At the end of logarithmic phase (15th day), the measured biomass reached up to 1.79 g [L.sup.-1], 1.04 g [L.sup.-1], and 2.51 g [L.sup.-1], respectively.
In the logarithmic phase (2-18 h), the number of bacteria has a steady geometric growth.
The results in Figure S1 (in supplementary data) show that the growth rate of A, baumannii 34702 in xylose is slightly lower than that in the presence of glucose, as the sole carbon source (in logarithmic phase: A, baumannii + Glu: 0.18 [h.sup.-1] and A, baumannii + Xyl: 0.17 [h.sup.-1]).
Growth curve of Saccharomyces cerevisiae on PDB (Potato Dextrose Broth) can be divided into two phases, a logarithmic phase between 0-28 hours and a stationary phase between 28-48 hours (Figure 1).
The logarithmic phase of cells started from 4th to 10th day and after that a stationary phase observed in cells with elongated vacuoles.
After that, NPMSCs proliferated rapidly from day 3 to day 7, entering into a logarithmic phase. Finally, the proliferation rates slowed down again, appearing as an S-shaped growth curve.
Between 5 x [10.sup.7] and 2 x [10.sup.8] logarithmic phase parasites (depending on the experiment) were resuspended in RIPA lysis buffer containing 150 mM NaCl, 1% Triton X-100, 20 mM Tris HCl, pH 7.4,1% Nonidet P-40,1 mM EDTA, and inhibitor cocktails for proteases (Roche Applied Science, IN) and supplemented with 1 mM sodium orthovanadate and 1 mM PMSF The cells were sonicated using the Bioruptor[R] (Diagenode) with the high power mode for 5 min (sonication cycle: 10 sec ON, 20 sec OFF) followed by 5 more minutes (sonication cycle: 30 sec ON, 30 sec OFF) and then centrifuged.
aureus in the presence of metal cholates, revealed that the time for logarithmic phase were reduced from 25-30 to 5-25 minutes for both bacteria, while the stationary phase from 90-100 to 40-60 minutes.