The inner (plasma) membrane of E. coli is about 75% lipid and 25% protein by weight.  How many molecules of membrane lipid are there for each molecule of protein?  (Assume that the average protein is Mr 50,000 and the average lipid is 750.)

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#Question id: 3762

#XL - Q Biochemistry

Why does a new DNA strand elongate only in the 5' to 3' direction during DNA replication?

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#Question id: 15680

#XL - S Microbiology

A common environmental organism that may even grow in certain chemical disinfectants is

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#Question id: 388

#XL - S Microbiology

Calculate the pH of a solution prepared by mixing 2.0 mL of a strong acid solution of pH=3.0 and 3.0 mL of a strong base of pH=10.0.

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#Question id: 18480

#XL - R Botany

Which of the given is an example of Fungal disease in plants?

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#Question id: 2663

#XL - T Zoology

A ______________ is a collection of clones that, among themselves, contain all the DNA sequences of the organism.