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When a population of bacteria first enter a high-nutrient environment that allows growth, the cells need to adapt to their new environment. The first phase of growth is the lag phase, a period of slow growth when the cells are adapting to the high-nutrient environment and preparing for fast growth. The lag phase has high biosynthesis rates, as ...
Prebiotic (nutrition) Prebiotics are compounds in food that foster growth or activity of beneficial microorganisms such as bacteria and fungi. [1] The most common environment concerning their effects on human health is the gastrointestinal tract, where prebiotics can alter the composition of organisms in the gut microbiome.
Bacillus subtilis (/ bəˈsɪl.əs subˈtiː.lis /), [3][4] known also as the hay bacillus or grass bacillus, is a gram-positive, catalase -positive bacterium, found in soil and the gastrointestinal tract of ruminants, humans and marine sponges. [5][6][7][8] As a member of the genus Bacillus, B. subtilis is rod-shaped, and can form a tough ...
v. t. e. A microorganism, or microbe, [a] is an organism of microscopic size, which may exist in its single-celled form or as a colony of cells. The possible existence of unseen microbial life was suspected from ancient times, such as in Jain scriptures from sixth century BC India.
Bifidobacterium is a genus of gram-positive, nonmotile, often branched anaerobic bacteria. They are ubiquitous inhabitants of the gastrointestinal tract [2][3] though strains have been isolated from the vagina [4] and mouth (B. dentium) of mammals, including humans.
These Pseudomonadota bacteria are also considered copiotrophic organisms, meaning they can be found in environments with high nutrient availability. [56] These environments have ample sources of carbon and other nutrients, environments like fertile soils, compost, and sewage.
High-nutrient, low-chlorophyll (HNLC) regions are regions of the ocean where the abundance of phytoplankton is low and fairly constant despite the availability of macronutrients. Phytoplankton rely on a suite of nutrients for cellular function. Macronutrients (e.g., nitrate, phosphate, silicic acid) are generally available in higher quantities ...
Lysogeny broth (LB) is a nutritionally rich medium primarily used for the growth of bacteria. Its creator, Giuseppe Bertani, intended LB to stand for lysogeny broth, [1] but LB has also come to colloquially mean Luria broth, Lennox broth, life broth or Luria –Bertani medium. [2] The formula of the LB medium was published in 1951 in the first ...