Freeze-fracture transmission electron micrograph of baker's yeast,Saccharomyces cerevisiae. The large round structure in the lower right of the yeast cell at upper right of frame is a cell nucleus. Yeast is a kind of single-celled fungus. It is able to ferment sugar,producing alcohol and carbon dioxide in the process. It has long been used to make beer & wine and in the baking of leavened bread (carbon dioxide causes the dough to rise). Medically,dried yeast is used as a source of vitamin B1,riboflavin,& nicotinic acid. Yeast cells divide rapidly by budding off new cells or by reproducing sexually. Magnification: x22,700 at 218x298mm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Dowsett, A. / Public Health England |
Taille de l’image : | 3588 px × 4972 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |