Consider several human populations  of  equal size  and  net  reproductive rate, but  different in  age  structure. The population that is likely to grow the most during the next 30 years is the one with the greatest fraction of people in which age range?

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#Question id: 14900

#Unit 6. System Physiology – Plant

polymer-trapping model explains symplastic loading in plants, This model states that the sucrose diffussion takes place through cell to cell via plasmodesmata; which of the following prediction about the diffusion mechanism is INCORRECT?    

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#Question id: 21392

#Unit 12. Applied Biology

In which one of the following bulk synthesis are easy?

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#Question id: 11300

#Unit 10. Ecological Principles

What type of organisms convert nitrates and nitrites into nitrogen gas?

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#Question id: 19058

#Unit 13. Methods in Biology

Which of the following gases is unsuitable for use as a GC carrier gas?

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#Question id: 264

#Unit 1. Molecules and their Interaction Relevant to Biology

Supercoiling of pure circular DNA is a result of ________.