Top 1000+ Solved Microbiology MCQ Questions Answer

Q. The ce l ls hav ing F p lasm id in thechromosomes were termed as

a. Hfr

b. F–

c. Hbr

d. C+

Q. Recombination process occurring throughthe mediation of phages is

a. Conjunction

b. Transduction

c. Transformation

d. Transfection

Q. Mordant used in grams staining is

a. Crystal violet

b. Iodine

c. Saffranin

d. All of these

Q. Parasitic form must contain

a. Capsule

b. Cell-wall

c. Endospores

d. Flagella

Q. Gram staining is an example for

a. Simple staining

b. Differential staining

c. Negative staining

d. None of these

Q. Following Cocci are non-motile except

a. Staphylococcu

b. Meningococcus

c. Gonococcus

d. Rhodococcus agilis

Q. Aspergillus fumigatus can infect

a. Bird

b. Animals

c. Man

d. All of them

Q. Enterotoxin responsible for food poisoningis secreted by

a. Enterococci

b. Entamoeba histolytica

c. Enterobacteriaceae

d. Straphylococci

Q. Autolysis is done by

a. Mitochondria

b. Lysosomes

c. Golgi bodies

d. Peroxisomes

Q. A facultative anaerobic is

a. Only grow anaerobically

b. Only grow in the presence of O2

c. Ordinarily an anaerobe but can grow with O2

d. Ordinarily an aerobe but can grow in absence of O2

Q. The percentage of O2 required by moderate anaerobe is

a. 0%

b. < 0.5%

c. 2 – 8%

d. 5 – 10%

Q. Interferon is formed by

a. Lymphocyte

b. Lymphoblasts

c. Fibroblasts

d. All of these

Q. Pigment bearing structure of bacteria are

a. Mesosome

b. Plasmids

c. Mitochondria

d. Chromophores

Q. Spirochete is

a. Gonococci

b. Strphylococci

c. Treponema pallidum

d. Streptococci

Q. Histones are found in

a. Prokaryote

b. Eukaryotes

c. Viruses