When assembling a fish aquarium one must add a conditioner to the water that contains bacteria capable of metabolizing fish waste such as ammonia, nitrate, and nitrite that accumulates in the aquaria water. Which of the following components of signal reception and transduction is NOT required for the bacterial two-component regulatory system for metabolizing these nitrogenous waste products?

Question

Quizplus · Accepted Answer

The bacterial two-component regulatory system, which is involved in processes such as metabolizing nitrogenous waste products, typically consists of a sensor kinase (such as the NarQ receptor) and a response regulator (such as the NarL transcriptional activator). It does not require a ligand-gated calcium channel, which is more commonly associated with eukaryotic cell signaling pathways. Protein kinases and metabolic enzymes are integral to the process, but ligand-gated calcium channels are not involved in bacterial two-component systems.

When Assembling a Fish Aquarium One Must Add a Conditioner