Escherichia coli and many others
nutrient agar
something such as agar were bacteria grows
blood agar, as it provides essential nutrients and growth factors needed for the growth of fastidious bacteria. Additionally, the presence of blood in the agar helps to support the growth of these bacteria by providing additional nutrients.
Theoretically, anything. As the agar is a non-selective agar many bugs can grow on nutrient agar. The only ones that can't are ones that have different growing conditions or different characteristics that makes it difficult or impossible to grow, but that is more uncommon.
The yellow bacteria that grows on agar and feeds on oatmeal with a drop of water is likely the species Micrococcus luteus. This bacterium is commonly used in laboratory settings for its distinctive yellow pigmentation and ability to grow on simple media like agar and oatmeal.
Bacteria will typically grow more abundantly in broth compared to agar. This is because broth provides a liquid environment with easy access to nutrients, encouraging faster growth of bacteria, while agar is a solid medium that offers less available nutrients and may restrict bacterial growth.
Gram-positive bacteria can grow on mannitol agar because they have the ability to ferment mannitol sugar present in the agar, producing acids as byproducts. This lowers the pH of the agar, causing a color change in the pH indicator (phenol red) from red to yellow, which is a characteristic reaction for gram-positive bacteria.
800ml H2O10g Bacto-tryptone5g yeast extract10g NaClAdjust pH to 7.5 with NaOHAdd 15g agarMelt agar into solution in the microwaveAdjust volume to 1L with dH2OSterilize by autoclaving
Eikenella corrodens generally does not grow on MacConkey agar because it is a fastidious organism that requires enriched media for growth. MacConkey agar is selective for gram-negative bacteria and primarily supports the growth of enteric bacteria, which Eikenella is not. Instead, Eikenella grows well on blood agar or other enriched media that provide the necessary nutrients.
In intestine normally found bacteria are lactobacillus, Candida albicans, Enterococcus facealis, and E.coli they can be grown on nutrient agar medium or can be grown on differntial media such as mackonckey agar in which E.coli gives mettalic green colour
Most gram positive bacteria do not grow on MacConkey agar or Eosin Methylene Blue (EMB) agar, as these are selective media designed to inhibit the growth of gram positive organisms. So, typically, you would not expect a gram positive bacteria to grow on these media.
Scientists often grow bacteria on agar plates because agar provides a solid surface for bacteria to thrive on. Agar is composed of nutrients that bacteria need to grow, making it an ideal medium for cultivating and studying bacteria in a controlled environment.