Parul Just Had a Lengthy Argument with Her Brother

question 13

Multiple Choice

Parul just had a lengthy argument with her brother. In this communication transaction, Parul is __________.

• A) a receiver
• B) a receiver and a source
• C) a channel
• D) a channel and a source

---

Definitions:

Enzyme Activity

The measure of the rate at which an enzyme catalyzes a reaction, converting substrate molecules into products.

Metabolic Pathway

A series of chemical reactions in a cell that build up or break down molecules for vital processes.

β-galactosidase Enzyme

An enzyme that catalyzes the hydrolysis of β-galactosides into monosaccharides, primarily involved in lactose breakdown.

Lac Operon

A gene regulatory mechanism in bacteria where the metabolism of lactose is controlled by the interaction of several genes and protein products.