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Home Q & A Board Biology-Related Homework Help Cell Biology
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colleen colleen
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11 years ago
When certain molecules are pumped across biological membranes against a concentration gradient via active transport, ATP is used. In our body cells, for example, sugars are actively transported and metabolized within the membrane-enclosed mitochondria. Prokaryotes, in contrast, lack mitochondria but are nonetheless able to metabolize the same sugars.

Based on the details provided in this scenario, which of the following statements is expected to be TRUE?
A) The sugar-digesting enzymes in eukaryotic cells, such as sucrase, are not the same sugar-digesting enzymes found in prokaryotic cells.
B) Overall, prokaryotes will gain more ATP per sugar molecule metabolized than will eukaryotes.
C) Prokaryotes and eukaryotes should have the same metabolic efficiency when digesting the same sugars, assuming their enzymes are the same.
D) Sugar metabolism in prokaryotes is exergonic, whereas in eukaryotes it is endergonic.
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bio_manbio_man
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colleen Author
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11 years ago
Thank you!
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