End of Lesson L2 Cyanobacteria review

1.      ​ (a)   are photosynthetic bacteria that can be blue-green, yellow, or red.

• cyanobacteria
• Methanogens
• Strepto Cocci
• Yeast Bacteria

Cyanobacteria is a ________________.

• Producer

• Consumer

• Decomposer

• Extremophile

between 2.5 and ___ billion years ago a bacteria appeared to develop the ability to photosynthesize.

Cyanobacteria have chloroplasts

• True

• False

Cyanobacteria are ​ (a)   meaning they have no membrane bound organelles or a true nucleus. They can still carry out photosynthesis, despite lacking the organelle normally required, which is a ​ (b)  

• prokaryotic
• chloroplast
• eukaryotic
• mitochondrion

What are the labels?

i

h

f

e

d

c

b

a

Cellulose Cell Wall

Flagella

Nucleoid

Peptidoglycan Cell Wall

Pili

Ribosomes

Capsule

Cytoplasm

Cell membrane

You are observing the theory of _______, in which one organism is taken in by another organism. This was thought to give rise to the modern day plant cell.

The oxygen catastrophe was a phrase used to describe the death of ​ (a)   organisms. This was due to ​ (b)   releasing a new gas called ​ (c)   into the atmosphere. This was ​ (d)   to anaerobic organisms

• anaerobic
• cyanobacteria
• oxygen
• toxic
• aerobic
• healthy
• carbon dioxide
• nitrogen
• bacteria

Cyanobacteria caused carbon dioxide concentrations to ​ (a)   and oxygen levels to ​ (b)   by the process of ​ (c)  

• decrease
• increase
• photosynthesis

Before anaerobic organisms died out, rocks made of iron become oxidized to become________