The common ancestors of birds and mammals were very early (stem) reptiles, which almost certainly possessed three-chambered hearts (two atria, one ventricle). Birds and mammals, however, are alike in having four-chambered hearts (two atria, two ventricles). The fourchambered hearts of birds and mammals are best described as ________.

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#Question id: 20541

#SCPH01 Biochemistry

Why do bacteria oxidize BTEXs and other organic pollutants?

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#Question id: 10901

#SCPH05 I Biotechnology

P-proteins have been characterized at the molecular level. P-proteins from the genus Cucurbita consist of two major proteins;

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#Question id: 6979

#SCPH01 Biochemistry

The muscle-forming cells of the vertebrate limb come from:

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#Question id: 834

#SCPH05 I Biotechnology

How the proteosome inhibitors  are potentially used in treatment of cancerous cells ?

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#Question id: 5710

#SCPH06 I Botany

This cytological analysis, chromosome (A) represents the normal condition and the centromere position. Assume that only one structural chromosome aberration occurs in the other chromosomes