External Structures

Question 1

What is the difference between a Capsule and a Slime Layer?

Answer 1

Capsules are tightly bound to the cell, Slime Layers are loosely bound to the cell.

Question 2

What are the Functions of Capsules and Slime Layers?

Answer 2

Attachment, Protection, Keep Water In, Restrict Diffusion of Exoenzymes and Nutrients, and Help Bind Negatively Charged cells Together

Question 3

What are Fimbriae?

Answer 3

Short, Small filamentous protein structures. One cell will have Many

Question 4

What are Pili?

Answer 4

Long filamentous protein structures. One cell will have One or Two

Question 5

What are the Functions of Fimbriae and Pili?

Answer 5

Attachment, Genetic exchange (Pili), Twitching Motility (Pili)

Question 6

Are Bacterial Flagella and Eukaryotic Flagella the Same?

Answer 6

NO. Bacterial Flagell are RIGID. Eukaryotic Flagella are Not.

Question 7

Which Flagella moves Rotationally like a Propellar?

Answer 7

Bacterial

Question 8

Which Flagella moves like a Whip?

Answer 8

Eukaryotic

Question 9

What are Eukaryotic Flagella made of?

Answer 9

Microtubules

Question 10

What does a Low Reynolds Number mean?

Answer 10

The environment is very high in viscosity. Think like Molasses

Question 11

What is Gliding Motility?

Answer 11

Movement across a solid surface by attaching to the surface and growing the cell out/pulling the cell in to move