Animals tend to maximize their energy intake- to- expenditure ratio. What is this behavior called?

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#Question id: 20097

#XL - P Chemistry

The work done in ergs for the reversible expansion of one mole of an ideal gas from a volume of 10 litres to 20 litres at is 

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#Question id: 1099

#XL - Q Biochemistry

How does the toxin of Vibrio cholerae cause profuse diarrhea?

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#Question id: 5241

#XL - T Zoology

Genes a, b, and c are widely spaced in the bacterial genome. Transducing phage from an a+ b+ c+ bacterium were used to infect a culture of a- b- c- cells, and b+ transductants were selected. Which of the following best describes the predicted genotypes of these transductants?

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#Question id: 788

#XL - T Zoology

Which of the following is true about Z-DNA helix?

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#Question id: 17668

#XL - R Botany

The most recent common ancestor of all land plants was probably similar to modern-day members of which group?