If the experimental population of E. coli lacks an F factor or F plasmid, and if bacteriophage are excluded from the bacterial cultures, then which of these is a means by which beneficial mutations might be transmitted horizontally to other E. coli cells?

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#Question id: 1048

#XL - T Zoology

A virion is composed of

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#Question id: 11444

#XL - R Botany

Ecologist have proposed following explanation to lead maximize biodiversity at tropic.

A. Higher productivity in the tropics allows for more species present

 B. Old communities have greater species than younger community

 C. Natural enemies such as predators and parasite limit competition in the tropics, which allows more species to coexist

D. Very less intensity of disturbances in the tropics promote high succession diversity

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#Question id: 27584

#XL - U Food Technology

match the protein in column 1 with its food source in column 2.

Column1                                         Column 2

(p) Zein                                            (1) soybean 

(q) Gluten                                        (2) maize

(r) Glycinin                                       (3) egg

(d) Ovalbumin                                 (4) wheat

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#Question id: 343

#XL - S Microbiology

Assume that acid rain has lowered the pH of a particular lake to pH 5.0. What is the hydroxide ion concentration of this lake?

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#Question id: 3936

#XL - Q Biochemistry

The large RNA-protein complex that processes introns and exons is called __.