photo credit: russell virgilio. astrobiology life in the universe goals for today module 1:...
TRANSCRIPT
Photo credit: Russell Virgilio
NASA ASTROBIOLOGY INSTITUTENASA AMES RESEARCH CENTER
LASSEN VOLCANIC NATIONAL PARKASTROBIOLOGY STUDENT INTERNS
Microbiology Lab29 October 2012
ASTROBIOLOGYLIFE IN THE UNIVERSE
Goals for today
Module 1: Microscopy
- acid
- neutral
- alkaline
Module 2: Cultures
- acid
- neutral
- alkaline
ASTROBIOLOGYLIFE IN THE UNIVERSE
1. Microscopy
Classification
ASTROBIOLOGYLIFE IN THE UNIVERSE
3 Domains of Life
Prokaryotes
Eukaryotes
DNA
1. Microscopy
ASTROBIOLOGYLIFE IN THE UNIVERSE
Genus Cyanidia (acid-tolerant red algae)
pH 0.2 – 4.040 – 56°C
1. Microscopy
Some microscopy examples from my research
White Creek, Yellowstone National ParkJuly 2012
CyanobacteriaGenus Mastigocladus
Some microscopy examples from my research
CyanobacteriaGenus Mastigocladus
Some microscopy examples from my researchChocolate Pots hot springs Yellowstone National
Park
CyanobacteriaGenus Synechococcus
Some microscopy examples from my research
CyanobacteriaGenus Synechococcus
Some microscopy examples from my research
CyanobacteriaGenus Oscillatoria
Some microscopy examples from my research
Minerals – halite (salt)gypsum
CyanobacteriaGenus Spirulina
Some microscopy examples from my research
Minerals – gypsum
ASTROBIOLOGYLIFE IN THE UNIVERSE
Module 1: Classification
Module 2: Metabolism
- photosynthesis
- chemosynthesis
Module 3: Communities
2. Cultures
ASTROBIOLOGYLIFE IN THE UNIVERSE
All organisms
Chemotroph Phototroph
ChemolithotrophChemoorganotroph
Chemical energy Light energy
2. Cultures
ASTROBIOLOGYLIFE IN THE UNIVERSE
All organisms
Chemotroph Phototroph
Chemical energy Light energy
Alkaline Group
2. Cultures
All organisms
Chemotroph Phototroph
Chemical energy Light energy
Alkaline Group PhototrophsChemotrophs
All organisms
Chemotroph Phototroph
Chemical energy Light energy
Acid Group
All organisms
Chemotroph Phototroph
Chemical energy Light energy
Acid Group - phototrophs Acid-tolerant Eukaryotic algaeChemotrophs
All organisms
Chemotroph Phototroph
Chemical energy Light energy
Neutral Group - phototrophs - chemotrophs
ASTROBIOLOGYLIFE IN THE UNIVERSE
If you’re a microbe, what do you need to eat to live?
All organisms
Chemotroph Phototroph
ChemolithotrophChemoorganotroph
Chemical energy Light energy
1. Source of carbon
2. Source of food (electrons)
3. Source of “air” (oxidants)
4. Trace nutrients
2. Cultures
ASTROBIOLOGYLIFE IN THE UNIVERSE
2. Cultures
MgFeCa
Mg
Mg
Fe
Ca
Fe
MgCa
Fe
Ca
Mg
Fe
ASTROBIOLOGYLIFE IN THE UNIVERSE
Goals for today
Module 1: Microscopy
- acid
- neutral
- alkaline
Module 2: Cultures
- acid
- neutral
- alkaline