NVCC BIO 150 Test 1 questions with verified
answers
Obligate Aerobes Ans✓✓-only aerobic growth, oxygen required. Contains
enzymes catalase and SOD(superoxide dismutase) which neutralizes toxic forms
of oxygen. Growth only where high concentrations of oxygen have diffused into
the medium
How are endospores useful to a bacterial cell? Outline the endospore formation
process Ans✓✓-Resting cells found in certain bacterial species.
Resistant to desiccation, heat and chemicals
Can be viable for centuries
Sporulation: process of endospore formulation. NOT REPRODUCTION
1.) Spore septum begins to isolate newly replicated DNA and a small portion of
cytoplasm
2.) Plasma Membrane starts to surround DNA, cytoplasm and membrane isolated
in step 1
3.) Spore septum surrounds isolated portion, forming forespore
4.) Peptidoglycan layer forms between membranes
5.) Spore coat forms
6.) Endospore is freed from cell
Characteristics of Microorganisms Ans✓✓-1.) Microbes as a group show diversity,
multiple domains
2.) Microbes are Ubiquitous! They're everywhere
3.) Structure=Function
,Are all microbes dangerous? Ans✓✓-NO ONLY 1% OF ALL MICROBES ARE
DANGEROUS TO HUMANS
What is the importance of Microbial Life on earth? Ans✓✓-1.) Major part of food
chain of all organisms
2.) Waste breakdown/nitrogen cycling in plants
3.) Food Production
4.) Drug Production
Beneficial Uses of Microbes Ans✓✓-1.) Microbial Ecology
2.) Bioremediation
3.) Pest Control
4.) Biotechnology
Who developed the system of naming organisms and whats it called? Ans✓✓-
Carl Linnaeus, Binomial Nomenclature
What are the three domains of life and who developed it? Ans✓✓-Bacteria,
Archaea, Eukarya. Developed by Dr. Carl Woes
What characteristics are used to classify life into three domains? Ans✓✓-
Ribosomal RNA, Single Cell/multicellular, Transferral RNA Structure
Prokaryote Bacteria Ans✓✓-1.) Single-Celled Organisms
2.) Bacteria exist in different shape, have cell wall made of Peptidoglycan
3.) Asexual Reproduction, Binary Fission
, 4.) Modal or Non-Modal, Flagella allows it to move
Prokaryote Archaea Ans✓✓-1.) Present in most extreme environments
2.) Methanogens, high methane environment
3.) Extreme Halophiles, high salt environment
4.) No Peptidoglycan, different cell wall
Fungi Ans✓✓-1.) Multicellular or Unicellular
2.) Most engage in sexual reproduction, some in asexual reproduction and some
can do both
3.) Mycellea made up of filaments called Hyphae
4.) Cell wall made of Kiatin
5.) Absorb organic chemicals for nutrients
Protozoa Ans✓✓-1.) Unicellular
2.) Free living or parasitic
3.) Some are Photosynthetic
4.) sexual or asexual reproduction
5.) May be Modal, can use flagella, massive Cillia or a pseudopod "false foot" to
move in environment
6.) Disease causing agents
Algae Ans✓✓-1.) Water Plants
2.) Cellulose Cell walls
3.) Uni or multicellular forms
answers
Obligate Aerobes Ans✓✓-only aerobic growth, oxygen required. Contains
enzymes catalase and SOD(superoxide dismutase) which neutralizes toxic forms
of oxygen. Growth only where high concentrations of oxygen have diffused into
the medium
How are endospores useful to a bacterial cell? Outline the endospore formation
process Ans✓✓-Resting cells found in certain bacterial species.
Resistant to desiccation, heat and chemicals
Can be viable for centuries
Sporulation: process of endospore formulation. NOT REPRODUCTION
1.) Spore septum begins to isolate newly replicated DNA and a small portion of
cytoplasm
2.) Plasma Membrane starts to surround DNA, cytoplasm and membrane isolated
in step 1
3.) Spore septum surrounds isolated portion, forming forespore
4.) Peptidoglycan layer forms between membranes
5.) Spore coat forms
6.) Endospore is freed from cell
Characteristics of Microorganisms Ans✓✓-1.) Microbes as a group show diversity,
multiple domains
2.) Microbes are Ubiquitous! They're everywhere
3.) Structure=Function
,Are all microbes dangerous? Ans✓✓-NO ONLY 1% OF ALL MICROBES ARE
DANGEROUS TO HUMANS
What is the importance of Microbial Life on earth? Ans✓✓-1.) Major part of food
chain of all organisms
2.) Waste breakdown/nitrogen cycling in plants
3.) Food Production
4.) Drug Production
Beneficial Uses of Microbes Ans✓✓-1.) Microbial Ecology
2.) Bioremediation
3.) Pest Control
4.) Biotechnology
Who developed the system of naming organisms and whats it called? Ans✓✓-
Carl Linnaeus, Binomial Nomenclature
What are the three domains of life and who developed it? Ans✓✓-Bacteria,
Archaea, Eukarya. Developed by Dr. Carl Woes
What characteristics are used to classify life into three domains? Ans✓✓-
Ribosomal RNA, Single Cell/multicellular, Transferral RNA Structure
Prokaryote Bacteria Ans✓✓-1.) Single-Celled Organisms
2.) Bacteria exist in different shape, have cell wall made of Peptidoglycan
3.) Asexual Reproduction, Binary Fission
, 4.) Modal or Non-Modal, Flagella allows it to move
Prokaryote Archaea Ans✓✓-1.) Present in most extreme environments
2.) Methanogens, high methane environment
3.) Extreme Halophiles, high salt environment
4.) No Peptidoglycan, different cell wall
Fungi Ans✓✓-1.) Multicellular or Unicellular
2.) Most engage in sexual reproduction, some in asexual reproduction and some
can do both
3.) Mycellea made up of filaments called Hyphae
4.) Cell wall made of Kiatin
5.) Absorb organic chemicals for nutrients
Protozoa Ans✓✓-1.) Unicellular
2.) Free living or parasitic
3.) Some are Photosynthetic
4.) sexual or asexual reproduction
5.) May be Modal, can use flagella, massive Cillia or a pseudopod "false foot" to
move in environment
6.) Disease causing agents
Algae Ans✓✓-1.) Water Plants
2.) Cellulose Cell walls
3.) Uni or multicellular forms
