Prokaryotic Cell Structure and Function

Part A

_____ are surface appendages that allow a bacterium to stick to a surface.

	Cell walls
	Mitochondria
	Flagella
	Ribosomes
	Fimbriae

Correct

Fimbriae enable bacterial cells to stick to a surface.

Part B

What is the function of a bacterium's capsule?

	adhesion
	protection
	DNA storage
	propulsion
	protein synthesis

Correct

A bacterium's capsule has a protective role.

Part C

The DNA-containing region of this bacterial cell is indicated by the letter _____.

	A
	B
	C
	D
	E

Correct

The nucleoid region contains DNA.

Part D

Where is a bacterial cell's DNA found?

	ribosomes
	nucleus
	peroxisome
	nucleoid region
	capsule

Correct

Bacteria lack a nucleus; their DNA is found in the nucleoid region.

Part E

In a bacterium, where are proteins synthesized?

	ribosomes
	nucleus
	peroxisome
	nucleoid region
	capsule

Correct

Ribosomes are involved in the manufacture of polypeptides (proteins).

Part F

What name is given to the rigid structure, found outside the plasma membrane, that surrounds and supports the bacterial cell?

	capsule
	pili
	cell wall
	flagella
	nucleoid region

Correct

The cell wall is a rigid supporting structure.

Part G

The _____ is the bacterial structure that acts as a selective barrier, allowing nutrients to enter the cell and wastes to leave the cell.

	plasma membrane
	nucleoid region
	ribosome
	pili
	cell wall

Correct

The plasma membrane is selectively permeable.

Part H

The structure that regulates the passage of material into and out of this bacterial cell is indicated by the letter _____.

	A
	B
	C
	D
	E

Correct

The plasma membrane is selectively permeable.