The members of which class of the phylum Cnidaria occur only as polyps?

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#Question id: 5266

#XL - S Microbiology

In conjugation the donor cell is recognized by the presence of

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#Question id: 10956

#XL - T Zoology

The coagulation pathway that begins with tissue thromboplastin is

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#Question id: 3047

#XL - S Microbiology

A rapidly growing bacterial species such as E. coli exhibits a typical phase of growth cycle in liquid nutrient broth. If a bacterial culture has starting density 1000 cells/ml in log phase and after four hours cell density is 4000 cells/ml.  What is specific growth rate per hour? 

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#Question id: 27234

#XL - T Zoology

The primary structure of DNA and RNA proceeds in which direction?

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#Question id: 10562

#XL - R Botany

The direction and rate of water flow across a membrane are determined by