Lecture 1: Intro to Microbes

Question 1

what are microbes

Answer 1

Free-living organism only visible with a microscope, with exceptions

Question 2

What are prokaryotic microbes?

Answer 2

bacteria and Archea

Question 3

What are Eukaryotic microbes?

Answer 3

Fungi and protists

Question 4

What is LUCA?

Answer 4

last universal common ancestor, which was a microbe

Question 5

What are the tree of life and its three domains?

Answer 5

bacteria, archaea, and Eukarya

• Noting that archaea and eukarya share a mor recent ancestor than they do with bacteria

Question 6

What is referred to as the “molecular clock”?

Answer 6

• selectively neutral changes in conserved regions
• found in all organisms
• small subunit (16s) RNA gene generally are highly conserved

Question 7

Why is size impoartant to microbes?

Answer 7

Size is important as SA to volume is key

• the larger the radius, then the larger the volume will be thus making is harder to organism to exist with proper diffusion
• larger cells need trick to increase SA

Question 8

MIcrobes are everywhere?

Answer 8

Yes, in the most extreme of conditions

and on human body, 9/10 cells are non-human microbes