In the lactose operon, the molecule that causes the repressor to fall off the promoter is which of the following?

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#Question id: 15671

#XL - S Microbiology

The lag phase of the bacterial growth curve is marked by

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#Question id: 407

#XL - Q Biochemistry

The reaction A + B -> C has a DG'° of –20 kJ/mol at 25° C.  Starting under standard conditions, one can predict that:

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#Question id: 11587

#XL - T Zoology

People experiencing chronic stress may be more likely to become sick because ________.

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#Question id: 20252

#XL - P Chemistry

The bond dissociation energy of gaseous H₂, Cl₂ and HCl are 104, 58 and 103 kcal mol^{– 1} respectively. The enthalpy of formation for HCl gas will be

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#Question id: 16477

#XL - T Zoology

Individual cell lineages are first isolated from an organ they are then grown separately to high density in a three- dimensional matrix. This  type of culture is called