Observe yeast and mold experiments.

In biology, there are many different kinds of bacteria, they have different characteristics and living environment, of course, these bacteria are usually invisible to the naked eye, only the use of microscopes to see their existence.
today to small to mold and yeast as an example, bring everyone together to observe yeast and mold experiments.
experimental materials: yeast, mold, iodine liquid;
1, observe the yeast experiment before watching the experiment, let's understand what is yeast? Yeast is a single-celled fungus that can survive in both aerobic and oxygen-free environments and belongs to anaerobic bacteria.
its main mode of reproduction is germination.
mature yeast cells, first grow a small bud, bud cells grow to a certain extent, away from the mother cells to continue to grow, and then form a new individual.
(1) Yeast production method: the use of ventilation flow and culture method commonly used in fermentation industry, the pure-bred yeast in the agar oblique interview tube after several step-by-step expansion of proliferation culture, and then in the fermentation tank proliferation culture, after centrifugal separation, pressing and drying to obtain yeast products.
(2) observe yeast: culture dating with sucrose and yeast powder for 12 hours to make a temporary sheet observation.
2, observe mold experiments we all know that mold species are very many, here small editor to mold and citamy as an example, to introduce you.
the nutritional body of penicillin is a colorless or light-colored mycelium, which is divided into matrix mycelium (absorbing nutrients into the nutrient matrix) and gas-sifyfi.
have a crucifying branch at the top of the gas-like filament.
fractions of spores are spherical to ovoid, green, blue, or yellow, the colors that are commonly seen in the various penicillin colonies. there are two methods of
(1) culture of penicillin: medium culture, orange culture (commonly used).
(2) observe the penicillin pick a little, make into a temporary piece, with a microscope to observe.
(3) culture the mildew to keep the fresh bread in the air for an hour, then culture.
(4) observe the crank mold with a little to make a temporary piece, microscope observation.
above is the small introduction of the observation of yeast and mold experiments, we see clearly? Although the introduction of the small editor in this article is not a lot, but the introduction of the basic experiment, there are some, I hope to help everyone's experience.
.