The diffusion coefficient (Ds ) is a characteristic of the substance

a) diffusion in liquid is much faster than diffusion in air

b) larger molecules have smaller diffusion coefficients

c) diffusion in air is much faster than diffusion in a liquid

d) Larger molecules have larger diffusion coefficient

Which of the following combination is correct?

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#Question id: 93

#XL - Q Biochemistry

What type of bond links the monomers of a polysaccharide?

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#Question id: 15678

#XL - S Microbiology

Alcohols are among the most widely used disinfectants and antiseptics. They act by 

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#Question id: 12344

#XL - T Zoology

The concept of punctuated equilibrium refers to

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#Question id: 5243

#XL - S Microbiology

Auxotroph culture (His- and Lac-) culture of E. coli was mutagenised. On what media would one spread the mutagenised cells to select prototroph for both His+  and Lac+ cells?

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#Question id: 11294

#XL - R Botany

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 ?