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: 19676

#SCPH05 I Biotechnology

When acetamide is converted to methylamine, what is the name of the reaction?

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#Question id: 23142

#SCPH01 Biochemistry

What is the value of numerical aperture of microscope if glycerol is used and sin α= 70^o?

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#Question id: 8685

#SCPH05 I Biotechnology

Which of the following would be most useful in creating a phylogenetic tree of a taxon?

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#Question id: 18390

#SCPH05 I Biotechnology

Which bacterium is mainly found at quite high ionizing radiation zones or areas?

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#Question id: 469

#SCPH06 I Botany

The anaerobic conversion of 1 mol of glucose to 2 mol of lactate by fermentation is accompanied by a net gain of: