Microbial diversity

Question 1

True or false: Can microbes be eukaryotic and prokaryotic? Or are they only prokaryotic?

Answer 1

False: They can be both

Question 2

What is the endosymbiosis theory?

Answer 2

Organelles (mitochondria) evolved by one prokaryote engulfing another prokaryote

Question 3

True or false: are microbes the oldest life form?

Answer 3

True

Question 4

What are the classification in the 5 Kingdom system?

Answer 4

Monera, Animalia, Plantae, Fungi, Protista

Question 5

What are the problems with 5 kingdom system?

Answer 5

Discovery of Archaea and the eukaryotic kingdoms are disputed

Question 6

What are the differences between bacterial and archaea membranes?

Answer 6

Archaea: membrane lipids branched isoprenoid chain
Bacteria: membrane lipids straight fatty acid

Question 7

What are the differences between bacterial and archaea cell wall?

Answer 7

Archaea: Non-peptidoglycan (protein) cell wall
Bacteria: peptidoglycan cell wall

Question 8

What are the differences between bacterial and archaea ribosomes?

Answer 8

Archaea: 80S
Bacteria: 70S

Question 9

What are the two gram’s stains?

Answer 9

Gram negative: pink
Gram positive: purple

Question 10

What are Fungi?

Answer 10

Eukaryotes with sexually producing phyla

Question 11

What are Protozoa?

Answer 11

Eukaryotes, mobile and often parasitic

Question 12

What are viruses?

Answer 12

Not living
Grow living cells
Very small
Highly contagious and pathogenic