An aviator is flying at 30,000 ft where the barometric pressure is 226 mm Hg. He is breathing 100% oxygen, his alveolar PCO2 is 40 mm Hg, and his alveolar water vapor pressure is 47 mm Hg. What is the alveolar PO2 of the aviator (in mm Hg)? (Assume that the respiratory quotient is equal to 1.)

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#Question id: 11416

#Unit 10. Ecological Principles

Which of the following biomes spans the largest annual mean temperature range, but the narrowest mean precipitation range?

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#Question id: 23450

#General Aptitude

On reaching the railway station, you find that the train you wanted to catch is just to start and there is hardly any time for purchasing the ticket. The best thing for you is to:

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#Question id: 23295

#General Aptitude

If you take your mid-day meal to school, what will be your mode of taking meal during recess hour?

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#Question id: 11968

#Unit 7. System Physiology – Animal

 Upon activation by stomach acidity, the secretions of the parietal cells ________.

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#Question id: 4732

#Unit 8. Inheritance Biology

What is F2 phenotype ratio observed when a homozygous recessive mutation in either or both of two different genes results in the same mutant phenotype?