A 19-year-old woman visits her physician because of nausea, diarrhea, light headedness, and flatulence. The physician administers 50 g of oral lactose at time zero, and measures breath hydrogen every 30 min for 3 hr using a hand-held monitor. The results are shown above. Which of the following best describes this patient’s condition?

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#Question id: 2369

#Unit 2. Cellular Organization

Fermentation, an anaerobic process, produces 2 ATP per glucose molecule whereas aerobic respiration produces approximately _____ ATP.

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#Question id: 1799

#Unit 4. Cell Communication and Cell Signaling

Which is the single best defining feature of a regulatory T-cell?

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#Question id: 12749

#Unit 13. Methods in Biology

What are the constituents used for isolation of bacterial plasmid DNA, RNA and plant DNA respectively?

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#Question id: 7481

#General Aptitude

What is the angle between minute hand & hour hand of a clock, when the time is 11:58?

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#Question id: 10845

#Unit 10. Ecological Principles

Pseudomyrmex ants live exclusively in the swollen thorns of acacia trees. In return for food and shelter provided by the trees, the ants aggressively defend the tree from leaf-eating insects. This interaction between ants and acacias represents an example of