Cynobacteria Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What’s so special about this bacteria?

A

jump started the 2ndary atmosphere

-> Only oxygenic photosynthetic bacteria!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Commonly found on (Cyanobacteria)

A

microbial mats

  • > on the top layer
  • > proteobacteria found on lower levels
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Types of pigments in cyanobacteria

A

chlorophila a (green), carotinodes (orange), pgycyan (blue), allopylocyan (blue), phyleocythrin (red)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How many photosystems in cyno?

A

2!!! Unlike in unoxgentic photosynthetic bacteria, ‘cus it needs more energy to rip apart a water molecules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Movement? (Cyanobacteria)

A

Moves without flagella, in mostl freshwater environments

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

On the cell structure (Cyanobacteria)

A

photosynthesis occurs in the THYLOKOID MEMBRANE, in think sheets

  • > has a vacuole like in plant cells
  • > no Flagella
  • > curcular DNA
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Choococcales

A

Unicellular cyanobacteria, but can form colonies

  • > eats away at limestone
  • > hard to kill
  • > toxic
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Toxic cyanobacteria

A

Can occur when there is excess in N and P from agriculture plus perfect heat conditions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

freshwater filamentous algee

A

Anabaena is a type of this (common toxic algee blooming one)

  • > Long cells are akinete, like the storage house
  • > hetocytes are anarobic and fix N, and really really hates o2
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Prochlorococcus

A

Exists in saltwater, 80% of earth primary producers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How did we date this? (Cyanobacteria)

A

Using stromatolites fossils of mounds formed by early colonies

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What pigments do they have?

A

CH a, phycocyanin, allophycocyanin, phycoerythrin, carodinoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Anoxygenic photosynthisis

A

ex// the purlple purple protobacteria

  • > uses SH2 for H+, less E needed so 1 reaction center
  • > no O2 as byproduct
How well did you know this?
1
Not at all
2
3
4
5
Perfectly