BIO 121 - LAB FINAL | VERIFIED STUDY 2026
UPDATES | ALREADY PASSED
, lOMoAR cPSD| 61371432
BIO 121 – Lab Final
LAB 1
RO: Bifidobacterium lactis
Domain – bacteria
Kingdom – bacteria
Phylum – actinobacteria
Common name – yogurt bacteria
Characteristics
- Prokaryotic
- Heterotrophic
- Unicellular
- Saprotroph
- Sessile
Habitat – human digestive tract Food/energy:
- Extracellular digestion
- secretes enzymes into the human intestine which break down food into small
particles that can be absorbed by the bacterium and human host Reproduction:
- Binary fission Adaptations
- Thick capsule – coats cell wall and provides protection from stomach acid and
white blood cells that try to destroy foreign organisms
RO: Anabaena
Domain- bacteria
Kingdom – bacteria
Phylum – cyanobacteria
Common name – blue-green algae
Characteristics
- Prokaryotic
Autotrophic
- Multicellular
, lOMoAR cPSD| 61371432
-
- Sessile
Habitat – freshwater Food/energy:
- Photosynthesis
Reproduction
- Asexually
Adaptations
- Heterocyst – specialized cell that fixes nitrogen into something the bacteria
- Thylakoids – membranes that are attachment points for pigments and enzymes
needed for photosynthesis
- Gelatinous sheath – holds cells together and allows for protection
RO: Halobacterium
Domain – archaea
Kingdom – euryarchaeota
Phylum – euryarchaeota
Characteristics:
- Prokaryotic
- Photoheterotrophic
- Unicellular
- Motile – rotating flagellum Habitat – extremely saline water Food/energy:
- Chemical energy using bacteriorhodopsin – red pigment, uses energy from
sunlight to create a proton gradient by pumping protons out of the cell – protons flow back
into the cell and ATP is created – not used to produce organic chemicals Adaptations:
- Halorhodospin – unique protein that helps to maintain a high salt concentration
within the organism by reducing loss of water by osmosis
Gas vesicles – allow it to float to the surface of the water to receive more light and
oxygen
LAB 2
UPDATES | ALREADY PASSED
, lOMoAR cPSD| 61371432
BIO 121 – Lab Final
LAB 1
RO: Bifidobacterium lactis
Domain – bacteria
Kingdom – bacteria
Phylum – actinobacteria
Common name – yogurt bacteria
Characteristics
- Prokaryotic
- Heterotrophic
- Unicellular
- Saprotroph
- Sessile
Habitat – human digestive tract Food/energy:
- Extracellular digestion
- secretes enzymes into the human intestine which break down food into small
particles that can be absorbed by the bacterium and human host Reproduction:
- Binary fission Adaptations
- Thick capsule – coats cell wall and provides protection from stomach acid and
white blood cells that try to destroy foreign organisms
RO: Anabaena
Domain- bacteria
Kingdom – bacteria
Phylum – cyanobacteria
Common name – blue-green algae
Characteristics
- Prokaryotic
Autotrophic
- Multicellular
, lOMoAR cPSD| 61371432
-
- Sessile
Habitat – freshwater Food/energy:
- Photosynthesis
Reproduction
- Asexually
Adaptations
- Heterocyst – specialized cell that fixes nitrogen into something the bacteria
- Thylakoids – membranes that are attachment points for pigments and enzymes
needed for photosynthesis
- Gelatinous sheath – holds cells together and allows for protection
RO: Halobacterium
Domain – archaea
Kingdom – euryarchaeota
Phylum – euryarchaeota
Characteristics:
- Prokaryotic
- Photoheterotrophic
- Unicellular
- Motile – rotating flagellum Habitat – extremely saline water Food/energy:
- Chemical energy using bacteriorhodopsin – red pigment, uses energy from
sunlight to create a proton gradient by pumping protons out of the cell – protons flow back
into the cell and ATP is created – not used to produce organic chemicals Adaptations:
- Halorhodospin – unique protein that helps to maintain a high salt concentration
within the organism by reducing loss of water by osmosis
Gas vesicles – allow it to float to the surface of the water to receive more light and
oxygen
LAB 2
