BI234 CH - MICROBIAL METABOLISM EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS
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Course
BI 234
Institution
BI 234
BI234 CH - MICROBIAL METABOLISM EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS
What role do enzymes play in metabolic pathways?
Enzymes control the chemical reactions in metabolic pathways. They are necessary for metabolism to occur.
How is the action of a competitive inhibitor different f...
Consider two flasks of the same facultative anaerobe grown in broth
supplemented with glucose for 16hrs. One flask is incubated in the presence of
Oxygen, the other in incubated under anaerobic conditions. If all other conditions
are held constant, what differences would you predict for the cell masses of the
two cultures.
-The culture grown in aerobic conditions would have a greater cell mass. In the
presence of oxygen, more ATP will be produces per glucose, allowing for a faster
growth rate than in the culture grown under anaerobic conditions.
How does oxidation of a molecule occur without molecular oxygen?
Oxidation - is the Loss of electrons; molecular oxygen is not necessary for this to occur.
What are the end product for each kind of Fermentation:
a) Homolactic fermentation
b) Heterolactic fermentation
c) Propionic acid fermentation
d) Mixed acid fermentation
e) 2,3-Butanediol fermentation
f) ABE fermentation
a) Homolactic fermentation- Lactic acid (yogurt, kefir, beer, bread)
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