Yeast can grow under anaerobic conditions only under both aerobic and anacrobic conditions under aerobic conditions only only in the presence of glucose and aerobically only in the presence of lactose and anaerobically
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Q7: Yeast cells can grow both in the presence of O2 (aerobically) and in its absence (anaerobically). under which of the two conditions could you expect the cells to grow better and why? Select all correct explanations. Yeast cells grow equally well under aerobic and anaerobic conditions, because glycolysis takes place under both aerobic and anaerobic conditions. Yeast cells grow much better aerobically, because they will produce more ATP per glucose than under anaerobic conditions. Under anaerobic conditions yeast cannot perform citric acid cycle and oxidative phosphorylation and have to produce all ATP by glycolysis, which is less efficient. Yeast cells grow much better anaerobically, because they will perform fermentation, leading to production of more ATP than under aerobic conditions. Under aerobic conditions one glucose molecule yields a net gain of about 30 molecules of ATP compared to only 2 molecules of ATP per glucose under anaerobic conditions. Yeast cells grow much better anaerobically, because they will produce more ATP per glucose than under aerobic conditions.
Suman K.
Yeast cells are versatile. They are able to grow in the presence of O2 (aerobically) and also without oxygen (anaerobically). Would you expect yeast cells to take on the energetically taxing processes of growth and division more in aerobic or anaerobic conditions? Explain your answer. The best answers will state which condition is more advantageous, provide an explanation that contrasts aerobic and anaerobic processes, then links these differences to the yeast cell's ability to grow and divide.
Sri K.
The budding yeast Saccharomyces cerevisiae (also known as brewer's yeast or baker's yeast) is a eukaryote that can grow either aerobically or anaerobically (i.e., with or without oxygen). In fact, S. cerevisiae cells can even grow if they have completely lost their mitochondria. How can these cells synthesize ATP to power anabolic reactions in the absence of oxygen?
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