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During fermentation, the overall net gain is ________ molecules of ATP per glucose.  In contrast, if the glucose was fully oxidized during cellular respiration, the cell will gain ________ molecules of ATP.

The role of oxygen gas in our animal cells is to directly

In the absence of oxygen, muscle cells capable of fermentation _______ so that the cell can ________.

The role of oxygen gas in our animal cells is to directly

In the absence of oxygen, muscle cells capable of fermentation _______ so that the cell can ________.

During mitotic anaphase, chromosomes migrate

Which molecule(s) function(s) to transfer hereditary information from one generation of cells to the next generation of cells in eukaryotes?  Choose one answer.

During meiosis, a unique event called crossing over results in the formation of __________ chromatids.  Crossing over occurs between ____________ chromosomes.

Which statement about base pairing is false?

The nitrogenous bases classified as purines are _______ ; purines contain _____ ring(s).