Which factors (limited space or overcrowding; limited food; Predators; parasite and diseased) tend to act in a density-dependent manner; Tony Sinclair (1989) many studies of density dependence in 51 populations of insects, 82 populations of large mammals, and 36 populations of small mammals and birds. Which of the following observation is most likely true?

a) Insects showed a wide variety of causes of density dependence and no one density-dependent factor was of overriding importance

b) The lesser the amount of available food, the greater the mortality of large mammals

c) Space and social interactions were more important for smaller mammals and birds, because they are more territorial

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#Question id: 23109

#Unit 2. Cellular Organization

What is the similarities between RNA polymerase and scaffolds 

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#Question id: 12044

#Unit 7. System Physiology – Animal

The proenzyme pepsinogen is secreted mainly from which of the following structures?

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#Question id: 11294

#Unit 10. Ecological Principles

A small lake has three trophic level – Phytoplankton(autotroph) , Zooplankton (herbivore ) and planktivorous fish ( primary carnivore) . In to this lake Population of some other primary carnivore introduced to study top down effect . What is expected long term consequence of this  introduction ?

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#Question id: 15338

#Unit 4. Cell Communication and Cell Signaling

Which cell generated on the receipt of SCF/c-Kit signaling lose the capacity for extensive self-renewal, but retain the potential to differentiate into several different hematopoietic lineages and also transiently express the molecule CD34?

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#Question id: 19046

#Unit 13. Methods in Biology

Which of the following techniques is used to study the three-dimensional structure of a molecule?