Pneumocystis carinii is a fungus because: (A) rRNA, mitochondrial protein gene sequence and presence of thymidylate synthase, (B) Cell wall contains glucans, (C) Angifungals are effective against P. Carini, (D) Commonest infection in AIDS
Answer is A. Fugus - possess rigid cell wall containing chitin mannan and other polysaccharides. The cytoplasmic membrane containing sterols. Cytoplasm contains true nuclei with nuclear membrane, mitochondria and endoplasmic reticulum. Ref: Textbook of Microbiology, Ananthanarayan and Paniker; 9th edition