An organism with a cell wall would most likely be unable to take in materials through:

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#Question id: 8717

#XL - T Zoology

Molecular clocks are more reliable when ________.

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#Question id: 2689

#XL - T Zoology

Which of these factors contribute to a decrease in gene density?

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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: 3908

#XL - Q Biochemistry

Which of the following is correct?

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#Question id: 3868

#XL - Q Biochemistry

The sigma factor of E. coli RNA polymerase: