Final answer:
The cytoplasmic NOD proteins (NOD1/2) are intracellular sensors of bacterial infections. The correct option is a. true
Step-by-step explanation:
The statement 'The cytoplasmic NOD proteins (NOD1/2) are intracellular sensors of bacterial infections' is true.
Intracellular sensors, such as the NOD proteins, are important for detecting and responding to bacterial infections inside the cell. These proteins recognize specific molecules that are characteristic of bacteria and trigger an immune response to combat the infection.
For example, NOD1 and NOD2 detect bacterial peptidoglycans, which are components of the bacterial cell wall. When these proteins recognize peptidoglycans, they activate signaling pathways that lead to the production of inflammatory molecules and antimicrobial proteins, helping to fight off bacterial infection. The correct option is a. true