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

question 27

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 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:

Compile

The process of converting source code written in a high-level programming language into executable machine code or another intermediate form.

==

An equality operator used in programming languages to compare two values, returning true if equal and false otherwise.

Nested If

A conditional statement within another conditional statement, allowing for more complex decision-making paths.

If-Else

A conditional statement in programming that executes a block of code if a specified condition is true, and another block if the condition is false.