Which of the following must exist in a population before natural selection can act upon that population?

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#Question id: 16122

#7. System Physiology – Animal

Fever is an abnormal elevation of body temperature. Following statements are regarding to the cellular mechanism of fever.

A. Pyrogens produce fever by increasing the hypothalamic set-point temperature.

B. the mechanism of pyrogen action is increased production of interleukin-1 (IL-1) in phagocytic cells.

C. IL-1 then acts on the anterior hypothalamus to increase local production of prostaglandins, which increase the set-point temperature.

D. IL-1 then acts on the posterior hypothalamus to increase local production of prostaglandins, which increase the set-point temperature.

E. IL-1 then acts on the posterior hypothalamus to increase local production of prostaglandins, which decrease the set-point temperature.

Which of the following combination is correct?

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#Question id: 23479

#Aptitude

MODEM is used for communicating data

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#Question id: 5300

#11. Evolution and Behavior

What is metagenomics?

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#Question id: 10248

#10. Ecological Principles

Factors involved in an animal’s foraging "strategy" are

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#Question id: 10812

#6. System Physiology – Plant

P-protein occur only in certain legumes and are encoded by members of the gene family known as;