In mammalian development, the embryo will form from which population of cells?

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#Question id: 14826

#XL - S Microbiology

An advantage of the smaller size of prokaryotes, compared to eukaryotes, is

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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: 943

#XL - Q Biochemistry

An amino acid formed by transamination of a citric acid cycle intermediate is ________.

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#Question id: 19619

#XL - P Chemistry

What effect does temperature have on the half-life of a first-order reaction?

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#Question id: 5241

#XL - T Zoology

Genes a, b, and c are widely spaced in the bacterial genome. Transducing phage from an a+ b+ c+ bacterium were used to infect a culture of a- b- c- cells, and b+ transductants were selected. Which of the following best describes the predicted genotypes of these transductants?