When Ecoli Is Grown in a Medium with Low Levels of of Lactose

question 139

Multiple Choice

When E.coli is grown in a medium with low levels of lactose,

• A) all the enzymes of the lactose operon are present in very small quantities.
• B) all the enzymes of the lactose operon are present in large quantities.
• C) no enzymes of the lactose operon are present.
• D) β-galactosidase and permease are present in small quantities, but transacetylase is present in large quantities.
• E) the mRNA of the lactose operon is not present at all.

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Definitions:

Behavioural Approaches

A range of psychological methods focused on changing observable and measurable behaviors, primarily through conditioning and reinforcement.

Watson

John B. Watson, an American psychologist who established the psychological school of behaviorism, emphasizing the study of observable behavior over the study of the mind.

Allen Memorial Hospital

A medical facility known for its contributions to psychiatric research and treatment, historically associated with McGill University.

Psychoanalysis

A therapeutic approach aimed at uncovering the unconscious mind to treat psychopathologies.