Free MCQs & Online Quiz Practice for Exams

Q: When the entire body of a bacterium is covered by flagella, such a bacterium is called (ETEA 2013)

A) Atrichous

B) Lophotrichous

C) Amphitrichous

D) Peritrichous

Q: Cell wall of gram positive bacteria is composed of (ETEA 2014)

A) Glycolipids

B) Glycoproteins

C) Lipoproteins

D) Peptidoglycan

Q: Blue-green algae besides chlorophyll also possess another pigment known as (ETEA 2014)

A) Phycocyanin

B) Phycoerythrin

C) Phycobilirubin

D) Phycobiliprotein

Q: Milk sugar is pasteurized by heating for 15 seconds at the temperature of (ETEA 2014)

A) 60°C

B) 71°C

C) 50°C

D) 80°C

Q: Murein cell wall is composed of (ETEA 2014)

A) Sugar and amino acids

B) Calcium pectate

C) Glycoprotein

D) Peptidoglycan

Q: Bacteria living in the gut form the association of (ETEA 2015)

A) Mutualism

B) Predation

C) Parasitism

D) Commensalism

Q: The interval between two successive divisions of bacteria is called (ETEA 2015)

A) Ecological time

B) Population time

C) Growth time

D) Generation time

Q: Most disease symptoms appear during (ETEA 2015)

A) Lag phase

B) Log phase

C) Stop phase

D) Decline phase

Q: Endotoxins are released only when bacteria (ETEA 2015)

A) Excrete

B) Reproduce

C) Decline phase

D) Secrete hormones

Q: Rhizobium belongs to sub-group of bacteria called (ETEA 2015)

A) Alpha-proteobacteria

B) Beta-proteobacteria

C) Gamma-proteobacteria

D) Delta-proteobacteria

Q: The sulphur bacteria which obtain energy by oxidizing H₂S instead of water are called (ETEA 2016)

A) Alpha-proteobacteria

B) Beta-proteobacteria

C) Gamma-proteobacteria

D) Delta-proteobacteria

Q: Which of the following statements is correct? (ETEA 2016)

A) Antipyretic drugs lower the temperature set point

B) Antipyretic drugs raise the temperature set point

C) Antipyretic drugs do not affect the temperature set point

D) Antipyretic drugs first lower and then raise the temperature set point

Q: DNA of bacterium is (ETEA 2016)

A) Haploid single-stranded coiled

B) Diploid double-stranded coiled

C) Haploid double-stranded coiled

D) Diploid single-stranded coiled

Q: Archaea live in both extreme and moderate environments those living in extreme conditions are called (ETEA 2016)

A) Extremophile

B) Methanogens

C) Extremophyte

D) Extremogeus

Q: If some bacteria infected by a certain phage develop the ability to make a new amino acid not in their genes before, what is the possible explanation? (ETEA 2017)

A) Introduction

B) Transformation

C) Transduction

D) Conjugation

Q: The first organisms that oxygenated the atmosphere (ETEA 2017)

A) Cyanobacteria

B) Phototrophic organisms

C) Anaerobic organisms

D) All of the above

Q: Rhizobium belongs to (ETEA 2017)

A) Beta-proteobacteria

B) Gamma-proteobacteria

C) Alpha-proteobacteria

D) Delta-proteobacteria

Q: A bacterium which has a group of two or more flagella inserted at one pole of the cell (ETEA 2019)

A) Monotrichous

B) Peritrichous

C) Lophotrichous

D) Amphitrichous

Q: Sulphur bacteria belong to sub-group of bacteria called (ETEA 2019)

A) Beta-proteobacteria

B) Alpha-proteobacteria

C) Gamma-proteobacteria

D) Delta-proteobacteria

Q: The following are sexual reproduction methods in bacteria except (ETEA 2019)

A) Transformation

B) Transduction

C) Binary fission

D) Conjugation