DEMONSTRATION OF MOTILITY

Question 1

T/F:
Bacteria that possess flagella are able to move

Answer 1

TRUE

Question 2

What is the movement of true motility?

Answer 2

zig zagging motion

Question 3

What is a false motion or Brownian motion?

Answer 3

organisms stay in one place BUT vibrate/shake

Question 4

Why do the organisms shake or vibrate in false motion?

Answer 4

due to water molecules bombarding the tiny organism

Question 5

What are the cultures used in the demonstration of motility experiment?

Answer 5

Lactobacillus plantarum & Pseudomonas fluorescens

Question 6

When bacteria exhibit vibratory movement instead of moving from one place to another, what are you observing?

Answer 6

Brownian movement

Question 7

Is the lactobacillus plantarum motile or nonmotile in both motile test & hanging-drop preparation?

Answer 7

non-motile

Question 8

Is Pseudomonas fluorescens motile or non motile?

Answer 8

motile for both

Question 9

What is the advantage of a hanging drop preparation?

Answer 9

preserves cell shape and arrangement