Answer:A yeast cell growing under anaerobic conditions
Explanation:
Yeast cells are able to grow in a medium in the absence of oxygen.
This process is fermentation. Yeast can ferment monossacharides and dissaccharides.
Plants can also carry out anaerobic respiration,for example a seed during germination.
In yeast fermentation,the end product of glycolysis, pyruvic acid forms ethanol. Carbon dioxide is released.
Baker's takes advantage of anaerobic respiration of yeast , because when added to dough, the carbon dioxide released makes dough to rise.