Which Statement Is False About the Utilization of Lactose as a Carbon

question 37

Multiple Choice

Which statement is false about the utilization of lactose as a carbon source by E.coli?

• A)In the presence of both glucose and lactose,the enzymes necessary for lactose catabolism are produced only in limited amounts.
• B)Lactose is the inducer for the enzymes responsible for its own catabolism.
• C)In the absence of lactose,the repressor binds to a single site upstream of the lac genes.
• D)The catabolic enzymes are encoded in a three-gene operon controlled by a single promoter.

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Definitions:

Matched Pairs

A statistical technique involving the pairing of observations or data sets based on certain criteria, often used in experiments to compare two groups while controlling for variables.

Ordinal Data

Ordinal data refers to a type of categorical data with a set order or scale to it, but without a consistent difference between each category.

Mann-Whitney Test

A nonparametric test used to assess whether there is a significant difference between two independent samples, an alternative to the t-test when certain assumptions are not met.

Sign Test

A non-parametric test used to determine if there is a significant difference between the median of two dependent samples.