In yeast cells, the process that occurs when there is not enough oxygen for aerobic respiration is called

Fermentation is the pathway taken at the end of glycolysis when oxygen is not present.  In yeast cells, the fermentation process produces carbon dioxide, alcohol, NAD+ (which then returns to kickstart glycolysis), but no ATP.  The process of fermentation is used in the production of various food products, including breads.  Carbon dioxide released from the process of fermentation causes bread dough to rise.

post-impressionism is a predominantly french art movement that developed roughly between 1886 and 1905, from the last impressionist exhibition to the birth of fauvism. post-impressionism emerged as a reaction against impressionists' concern for the naturalistic depiction of light and colour.

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well, i believe that the answer is 2. : 3