Microbiology: Ch. 3 - HW 2

Axial filaments are composed of

endoflagella

Which of the following types of bacteria cells would have only a single flagellum?

monotrichous

Tumbles occur when

the flagella rotate clockwise.

Peritrichous bacteria make a run when

the flagella turn counterclockwise and become bundled.

Which of the following is true about endoscopes?

Endospoes are highly resistant to environmental stress.

A capsule is one type of glycocalyx that is fairly unorganized and loosely associated with the cell wall.

False

Prokaryotic cells that move in response to oxygen levels are said to display chemotaxis.

False

Short, bristle-like structures that extrude from the surface of a prokaryotic cell are called

Fimbriae

Select the incorrect paring.

Glycocalyx: a carbohydrate layer found within the cell wall

What is the advantage to spirochetes of the corkscrew movement provided by axial filaments?

It allows the cells to move more easily through viscous human tissues and fluids, such as mucus.

Which of the following types of bacterial cells would have flagella located at only one end of the cell?

Lophotrichous and monotrichous

Prokaryotic cells house a single circular chromosome in their ______.

Nucleoid region

Bacteria with flagella distributed all over the cell surface are described as having:

Peritrichous flagella

Which of the following structures allow bacteria to transfer genetic information through conjugation?

Pili

How do axial filaments differ from regular bacterial flagella?

The axial filament is located between the cell membrane and the outer membrane.

Choose the true statement(s) about the prokaryotic cytoskeleton.

The prokaryotic cytoskeleton provides general organization of the cytoplasm. The prokaryotic cytoskeleton directs construction of a rigid cell wall.

Bacteria that have flagella at both poles of the cell are described as amphitrichous.

True