Question

Your family and friends ask you, “Is E. coli a pathogen?” What would you answer? which of the following sentences is not correct

1. Some E. coli grow normally in the d. human intestine, producing vitamins,
   such as vitamin K

2. Other strains, such as E. coli O157:H7, e. cause serious illness.

3. E. coli is a common microorganism there is nothing to be worried about

4. E. coli, like other microbes can live symbiotically in our gut

5. Location, location, location. If it stays where it should be no strain of E. coli is a threat

116. Energy obtained from REDOX reactions with nitrate (NO3) and glucose is____________ carbon dioxide (CO2) and molecular hydrogen (H2)

     1.more than 2. equal to 3.less than 4. there is not information to answer

Answer 1

Answer of the 1st question,

Pathogens are the organisms that are capable of causing disease in human and in other organisms.Most of the E.coli strains are not harmful i.e. they are not capable of causing any diseases in human and in other animals.But, there are some strains of  E.coli ( e.g. O157:H7, O104:H4 etc ) that cause various type of diseases such as diarrhea in humans. So, these strains of E.coli that cause disease can be called pathogenic.

Answer of 2nd question,

All the sentences provided in the question are correct except E.coli is a common microorganism there is nothing to be worried about.

Answer of 3rd question,

the answer is option "4" i.e. there is no information to answer.