Microbiology

Which of these is a cocci occurring in pairs?

• Streptococci

• Diplococci

• Streptococci

• Staphylococci

Based on the diagram above, the flagella arrangement of bacteria cell is known as ___________.

• Petritrichous

• Monotrichous

• Lophotrichous

• Amphitrichous

To differentiate between Gram positive and Gram negative bacteria _____________________ procedure will be used.

Which of the following statement is TRUE regarding Gram positive bacteria?

• Cell wall have high lipid content

• Lipopolysacharides layer is present

• crystal violet stain is retained

• Have 2 layers of cytoplasmic membrane.

What is the function of Pilus in prokaryotic?

• for swimming movement

• Attachment to surface

• Transfer of DNA to other cells

• Serve as defense mechanism

A slippery outer covering in some bacteria that protects them from phagocytosis by host cells is

• cell wall

• capsule

• peptidoglycan

• Teichoic acid

A Gram negative cell wall is __________ than a Gram positive one.

________________ is ability to produce disease in host organism.

Bacteria endopsore usually occur in Gram positive bacteria.

• True

• False

Pleomorphic is the term used particularly for bacteria having

• One shape

• Rod

• Spiral

• Variable shape