Anaerobically growing yeast further metabolizes the pyruvate produced by glycolysis to CO2 and ethanol as part of a series of fermentation reactions
A. What other important reaction occurs during this fermentation step?
B. Why is this reaction (that is, the answer to part A) essential for the anaerobically growing cell?
A. NADH -> NAD+.
B. Under anaerobic conditions, it is the only means of regenerating the NAD+ required for glycolysis, the main energy-generating pathway of an anaerobically growing yeast cell.
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The genes that determine where appendages will develop on the animal’s body are called
a. ideotic genes b. homeobox c. Hox genes d. homeotic genes e. homeodomains
All of the following are characteristics of ALL
living organisms with one exception. Select the exception.
a. complex structural organization b. homeostasis c. cells as their basic units d. the ability to derive energy from inorganic sources e. capacity to evolve
How many carbon sugars are there in a pentose sugar?
a. two b. three c. five d. six e. eight
Which force is responsible for moving water up to the tops of the trees?
A. transpiration B. root pressure C. atmospheric pressure D. water stress E. guttation