Effector memory T-cells can be distinguished from the central memory T-cells from which they arise by:

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#Question id: 5708

#XL - R Botany

If non-disjunction occurs in meiosis I, which of the following scenario is most likely to occur?

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#Question id: 20039

#XL - P Chemistry

In any subshell the maximum number of electrons having same value of spin quantum number is

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#Question id: 27241

#XL - T Zoology

Which is the largest among the followings?

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#Question id: 19775

#XL - P Chemistry

Which experimental observation correctly account for the phenomenon?

Experimental observation                                 Phenomenon

(A) X-rays spectra                                              Charge on nucleus

(B) alpha -particle scattering                           Quantized electron orbit .

(C) Photoelectric effect                                      The nuclear atom

(D) Emission spectra                                         Quantization of energy.

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#Question id: 54

#XL - Q Biochemistry

About 25 of the 92 natural elements are known to be essential to life. Which 4 of these 25 elements make up approximately 96% of living matter?