Allolactose, an Isomer of Lactose, Is Formed in Small Amounts

question 66

Multiple Choice

Allolactose, an isomer of lactose, is formed in small amounts from lactose. An E. coli cell is presented for the first time with the sugar lactose (containing allolactose) as a potential food source. Which of the following occurs when the lactose enters the cell?

• A) The repressor protein attaches to the regulator.
• B) Allolactose binds to the repressor protein.
• C) Allolactose binds to the regulator gene.
• D) The repressor protein and allolactose bind to RNA polymerase.
• E) RNA polymerase attaches to the regulator.

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Definitions:

Phenomenological

Relating to or concerning the direct subjective experience of phenomena, without any attempt to interpret or infer causality.

Psychoanalytic

Pertaining to psychoanalysis, a therapeutic approach emphasizing the exploration of the unconscious mind to treat psychological distress.

Assessment

The process of evaluating or estimating the nature, ability, or quality of something through various methods.

Pigeonholing

The practice of classifying or categorizing people or things into oversimplified and rigid categories, ignoring individual differences.