Question

Gram-negative bacteria are responsible for the majority of Healthcare Associated Infections (HAI's also known as nosocomial infections). Serious disease may result when Gram-negative bacteria establish opportunistic infection of nearly all body systems. These HAI's have serveral signs in common.

The signs of opportunistic HAI's with Gram-negative bacteria typically include high fever, inflammation, tissue edema, low blood pressure, and DIC. What common stuctural characteristics of Gram-negative bacteria is directly or indirectly responsible for these signs?

A. Flagellin

B. Fimbriae

C. Peptidoglycan

D. Phosphoplipid

E. Lipid A

Answer 1

Option C, Peptidoglycan

Step-by-step explanation:

A Gram-negative bacterium consists of thin cell wall of peptidoglycan. This cell wall is further protected by layering of lipopolysaccharide which is absent in the Gram-positive bacteria. Teichoic acids (anionic polymer) are released by peptidoglycan layers. Whenever a bacterium enters into a host’s body, it faces hostile environment and to combat with it, it releases some nutrients from the outside and also secretes waste products. These substances lead to several diseases in the host body.

Hence, option C is correct