The origin of the craniates occurred at roughly the same time as the

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#Question id: 9285

#XL - Q Biochemistry

Non-O2-evolving (anoxygenic) organisms, contain only a single photosystem such as

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#Question id: 10243

#XL - T Zoology

A group of species that potentially compete with one other for a resource, such as insect- eating birds, is called a

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#Question id: 18000

#XL - Q Biochemistry

Two-dimensional polyacrylamide gel electrophoresis separates the proteins on the basis of

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#Question id: 20116

#XL - P Chemistry

Which of the following fuels will have the highest calorific value (kJ/kg)

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#Question id: 20199

#XL - P Chemistry

The relationship between energy E, of the radiation with a wavelength 8000 Å and the energy of the radiation with a wavelength 16000 Å is