When does a human egg cell accomplish its meiotic division?

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#Question id: 8937

#XL - S Microbiology

During metamorphosis, echinoderms undergo a transformation from motile larvae to a sedentary (or sometimes sessile) existence as adults. What differentiates echinoderm adults, but not their larvae? Adults should

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#Question id: 20207

#XL - P Chemistry

If wavelength of photon is 2·2 × 10 ^{– 11}m, h = 6·6 × 10^–34 Js, then momentum of photon is

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#Question id: 15144

#XL - S Microbiology

For the stimulation of B-cell responses

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#Question id: 10347

#XL - Q Biochemistry

NH4+ is toxic to plants, inhibit dinitrogenase and also interfere energy metabolism by dissociating ATP formation  from ETC  in both mitochondria and chloroplasts. What will plant cells do to avoid this problem?

a) Plant cells avoid ammonium toxicity by rapidly converting the ammonium generated from nitrate assimilation or photorespiration into nitrate

b) Plant cells avoid ammonium toxicity by rapidly converting the ammonium generated from nitrate assimilation or photorespiration into amino acids

c) The pathway for this conversion involves the sequential actions of glutamine synthetase (GS) and glutamate synthase (GOGAT)

d) The pathway for this conversion involves the sequential actions of Aspartate aminotransferase (Asp-AT) and Asparagine synthetase (AS)

Which of the above statements is incorrect?

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#Question id: 27204

#XL - T Zoology

Who is known as the father of Molecular biology?