Two trains of equal length are running on parallel lines in the same direction at 57km/hr and 39km/hr. The faster train passes the slower train in 20sec. The length of each train is?

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#Question id: 18718

#Unit 13. Methods in Biology

What does an E.Coli genomic library contain?

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#Question id: 27922

#Unit 11. Evolution and Behavior

Lamarck hypothesized that different organisms originated separately by______I_________and gives a principle_______II_______.

a) spontaneous generation from nonliving matter

b) inheritance of acquired character

c) means of Natural Selection

d) Uniformitarianism

e) Spontaneous generation from living matter

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#Question id: 70

#Unit 1. Molecules and their Interaction Relevant to Biology

The dimensions of living cells are limited, on the lower end by the minimum number of biomolecules necessary for function, and on the upper end by the rate of diffusion of solutes such as oxygen. Except for highly elongated cells, they usually have lengths and diameters in the range of

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#Question id: 12443

#Unit 10. Ecological Principles

r-strategists typically

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#Question id: 11948

#Unit 7. System Physiology – Animal

Which of the following increases the rate of excretion of calcium ions by the kidney?