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#Question id: 39926


Q. The RNA world hypothesis suggests that RNA acted as:

#Environmental Science
  1.  Structural molecule only
  2.  Enzyme only
  3. Genetic material and catalyst
  4.  Energy source

Answer:- Option(s): 3


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#Question id: 11099

#Biochemistry

In the mammalian alveoli, the partial pressure of O2 is _______ that of atmospheric air and the CO2 partial pressure is _______ that of atmospheric air

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#Question id: 11100

#Biochemistry

Which circumstance would increase ventilation frequency in humans?

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#Question id: 11101

#Biochemistry

The rate at which new air is brought into the alveoli and other respiratory pathways is called the

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#Question id: 11102

#Biochemistry

Pulmonary surfactant

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#Question id: 11103

#Biochemistry

A key mechanism of gas transport through the tracheal system is

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#Question id: 11104

#Biochemistry

The serous membrane covering the surface of the lungs is called the:

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