If the energy of electron in H atom is given by expression, − 1312/n² kJ mol^-1, then the energy required to excite the electron from ground state to second orbit is

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#Question id: 10511

#XL - R Botany

Which type of pumps inhibits digitoxin in the membranes of heart cells, leading to increased myocardial contraction?

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#Question id: 18521

#XL - R Botany

Santalum album is having 

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#Question id: 17284

#XL - R Botany

Which kind of plant tissue should lack phragmoplasts? 

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#Question id: 1023

#XL - T Zoology

Which amino acid(s) is/are found only in the cell walls of bacteria?

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#Question id: 5757

#XL - S Microbiology

A new E. coli mutant was tested for auxotrophy. The mutant grows on:

minimal medium (M) + arginine (A) + proline (P)

M + P + histidine (H)

M + A + H + P

but not on M or on M + A + H. The mutant requires