The archenteron of the developing sea urchin eventually develops into the ________.

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#Question id: 27257

#XL - T Zoology

Because of steric constraints, purines in purine nucleotides are restricted to two stable conformations with respect to deoxyribose, called syn and anti.

            

The two molecules shown in the figures are best described as

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#Question id: 2197

#XL - Q Biochemistry

 If a freshwater plant were put in sea water, its cells would:

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#Question id: 1749

#XL - Q Biochemistry

The αβ heterodimeric form of the IL-2 receptor:

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#Question id: 11712

#XL - S Microbiology

The following are all characteristic of the water molds (oomycetes) except

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#Question id: 8841

#XL - R Botany

Adaptive radiations can be a direct consequence of four of the following five factors. Select the exception.