An endotoxin is select one:
a. secreted by pathogenic organisms.
b. indicative of gram-negative bacterial infection.
c. secreted by gram-positive organisms.
d. indicative of fungal infections.
e. indicative of viral infections.

The correct answer will be- option-B

Explanation:

Endotoxin is a pyrogen which causes fever in humans and animals. The endotoxin is the lipopolysaccharide portion of the exterior cell wall of the gram-negative bacteria which consists of lipid A portion, O-antigen, disaccharide phosphate and the core polysaccharides.

The lipid A portion of the lipopolysaccharide is the cause of the endotoxin nature which is sensed by the immune cells of humans and other animals as an antigen which causes fever.

Since endotoxin is found in the lipopolysaccharide of the gram-negative bacteria, therefore, is an indication of the gram-negative bacteria.

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."