Owls eat rats, mice, shrews, and small birds. Assume that, over a period of time, an owl consumes 5,000 J of animal material. The owl loses 2,300 J in feces and owl pellets and uses 2,500 J for cellular respiration. What is the production efficiency of this owl?

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#Question id: 374

#XL - S Microbiology

The pH of a sample of blood is 7.4, while gastric juice is pH 1.4.  The blood sample has:

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#Question id: 374

#XL - Q Biochemistry

The pH of a sample of blood is 7.4, while gastric juice is pH 1.4.  The blood sample has:

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#Question id: 375

#XL - S Microbiology

The aqueous solution with the lowest pH is:

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#Question id: 376

#XL - S Microbiology

Phosphoric acid is tribasic, with pKa of 2.14, 6.86 and 12.4. The ionic form that predominates at pH 3.2 is

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#Question id: 377

#XL - S Microbiology

The aqueous solution with the highest pH is:

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#Question id: 378

#XL - S Microbiology

Which of the following statements about buffers is true?