Henry starts a trip when the hands of the clock are together between 8 am. and 9 am. He arrives at his destination between 2 pm and 3 pm when the hands of the clock are exactly 180° apart. The trip takes:

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#Question id: 5256

#Unit 8. Inheritance Biology

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: 18856

#Unit 13. Methods in Biology

A scientist constructs a recombinant bacterial plasmid that contains a gene conferring resistance to the antibiotic ampicillin (amp). The scientist transforms cultures of E. coli bacteria with the recombinant plasmid, then incubates the cultures overnight on plates containing media without ampicillin (amp-) and with ampicillin (amp+).

Assuming the transformation protocol was successful, which of the following best predicts the bacterial growth pattern expected after the incubation period?

 

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#Question id: 325

#Unit 1. Molecules and their Interaction Relevant to Biology

A true statement about hydrophobic interactions is that they:

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#Question id: 33230

#Unit 1. Molecules and their Interaction Relevant to Biology

The pH dependence of the rate of the reaction catalyzed by fumarase produces the following curve. Which amino acid/s likely to be present in the active site

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#Question id: 15704

#Unit 12. Applied Biology

Arabinogalactan and Auxin are the substances used for maintaining the_________ In medium.