Bacterial morphology

Which of the following bacteria is resistant to penicillin due to a lack of cell wall?

• Spirochetes

• Mycoplasma

• Cyanobacteria

• Streptococcus

Sterols are found in the cytoplasmic membrane of

Bacterial cell wall is made up of

• N acetyl glucosamine

• N acetyl muramic acid

• Both a and b

• Both a, b and amino acids

Flagella in bacteria help them in ------

• Reproduction

• Locomotion

• Thrive in nutrient agar

• Adhere to tissue surfaces

Arrangement of polar flagella in a cluster is known as ----------

True statement about cell wall of gram positive bacteria is -

• Comprises of many layers

• Thicker than that of gram negative bacteria

• Has teichoic acid

• All of the above

------------- shows chinese letter arrangement when viewed under microscope

Which among the following is seen exposed on the outer surface of gram negative bacteria

• A. Braun lipoprotein

• B. O antigen of lipopolysaccharide

• C. Polysaccharide portion of lipoteichoic acid

• D. Electron transport sytem components

Some bacteria possess capsule which is antigenic and contributes to its virulence. Which among the following do not possess a capsule

• A. Leptospira interrogans

• B. Streptococcus pneumoniae

• C. Hemophilus influenzae

• D. Neisseria meningitidis

Some bacteria tide over unfavourable conditions by forming -------