Question

A microbiologist decides to use a nutrient medium that contains thioglycolic acid. What type of microbe is she attempting to culture?

A) strict obligate anaerobe

B) fastidious

C) virus

D) gram negative

E) gram positive

Answer 1

Option a is the correct answer as the Thioglycolic acid that is specificaly and organic compound that is HSCH2CO2H. Thioglycolic acid is Very often know as the mercaptoacetic acid that is MAA. It has both the thiol as well as the carboxylic acid which are the functional groups of the substance .Thioglycolic acid that is used by the personal is a reducing agents which will consume up all the o2 in that medium as well as it facilitate the growth the specific kind of the obligate anaerobes

Option a is the correct answer as she is trying to make a strict obligate anerobic mediums

Option b is wrong as fastidious medium need nutrient rich substances and this is not a nutrient rich substances so it is not fastidious medium

Option c is the wrong answer as the medium is not fir viruses

Option d and e is wrong as they are not the medium for the gram positive and gram negative organism