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: 151

#Section 2: General Biology

The isoelectric point of alanine is pH = 6.15. It is mixed with proline (pHCOOH = 2.0; pHNH2= 10.6), and the mixture is placed in an electric field at pH 6.15. Which statement is true?

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#Question id: 154

#Section 2: General Biology

The peptide bond is which of the following?

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#Question id: 155

#Section 2: General Biology

Which amino acids are linked in phenylalanylglycine?

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#Question id: 156

#Section 2: General Biology

What is the N-terminal for the pentapeptide Val-Ile-Glu-Arg-Tyr?

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#Question id: 157

#Section 2: General Biology

Which of the following statement describes the primary structure of a protein

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#Question id: 158

#Section 2: General Biology

At the isoelectric pH of a tetrapeptide: