Bacteriology

Question 1

Microbes are how many times more numerous than human cells?

Answer 1

up to 10 x

Question 2

Microbes are _______ in number, _______ in size

Answer 2

Large; small

Question 3

Are microbes everywhere?

Answer 3

Yes

Question 4

________ are essential for the existence of all life on Earth.

Answer 4

Bacteria

Question 5

What are the Key bacterial characteristics?

Answer 5

• Ubiquitous and numerous
• Beneficial bacteria (greater number); Pathogenic bacteria
• Very small 0.5 – 5 μm in length
• they are Prokaryotes (NO nucleus)
• Unicellular
• Single circular chromasome
• No cytoskelaton
• No histones

Question 6

Label the following cell. Determine if the cell is Eukaryotic or Prokaryotic.

Answer 6

A) cytoplasm

B) cell membrane

C) DNA

D) ribosome

Eukaryotic Cell

Question 7

Label the following cell. Determine if the cell is Eukaryotic or Prokaryotic.

Answer 7

A) plasma membrane

B) nucleoid (DNA)

C) cytoplasm

D) ribosomes

Prokaryotic cell