what does the word incubated mean?
Put in a warm place a to hatch.
"Transformation" refers to a change in the heritable characteristics in bacteria that have been incubated with DNA of other bacteria. Some of these incubated bacteria will acquire some of the characteristics of the bacteria from which the DNA was extracted. The DNA enters the incubated bacteria through holes in the cell membrane, and gets incorporated into the bacterial genome.
The temperature at which agar plates are incubated has nothing to do with agar. The temperature of 37 degrees celsius is used because it is the optimum temperature for most bacteria like E. coli, Staphylococcus aureus, etc. Agar plates are incubated at lower temperatures also. One such example is the growth of yeast (Saccharomyces cerevisiae) and the plates are incubated at around 25 degree celsius. It all depends upon the optimum growth temperature of the…
There's a terminology problem here. Birds, including blue jays, lay eggs. The eggs are then incubated until the young birds hatch from them. If you consider "hatching" to be the same as "being born", then no, the incubation has already taken place. If you consider "born" to correspond more to the egg laying part, then yes, the eggs are incubated after being laid.
It depends on the species of bird that laid it, how cold for how long and how far incubated the egg is, but eggs can be left to cool for surprisingly long periods if incubated - in some species it can be days, but most it can be an hour or so. Under ideal storage conditions, fertile eggs from many species of bird will remain viable, if not incubated previously, for a month.