MCB 2010: Final EXAM 3 Test
Questions All Solved Correct (Rated
A+) 2025-2026 Edition.
coccus - Answer spherical
bacillus - Answer rod shaped bacteria
Spiral - Answer Spirilla
What produces endospores? - Answer gram positive:
*Bacillus* and *Clostridium*
How does an endospore form? - Answer Each vegetative cell transforms into endospore
during duress, each endospore germinates to form one vegetative cell.
What is the process of endospore formation called? - Answer Sporulation; and the return of
an endospore to its vegetative state is called germination.
Why are endospores a concern to health care professionals? - Answer Can resist attempts to
kill them and produce deadly toxins that cause fatal disease.
Examples of endospores - Answer anthrax, tetanus, and gangrene.
How do all prokaryotes reproduce? - Answer Asexually
3 main methods of prokaryote reproduction - Answer binary fission, snapping, budding
snapping division - Answer two daughter cells attached by outer layer of cell wall
viviparity - Answer young are retained within the female's body until they are mature
enough to be born
steps of binary fission - Answer 1. duplication
2. segregation
3. cytokinesis
,snapping division - Answer
Budding - Answer Asexual reproduction in which a part of the parent organism pinches off
and forms a new organism
epulopiscium - Answer giant bacterium that lives in surgeon fish and use viviparity as
method of reproduction.
diplococci - Answer cocci growing in pairs
streptococci - Answer chains of cocci
tetrads - Answer 4 cocci in a square
sarcinae - Answer cubic configuration of 8 cocci
staphylococci - Answer bacteria growing in bunches (like grapes)
palisade - Answer when bacilli divide by snapping division and the daughter cells remain
attached to from V-shapes and side bu side arrangement.
How are prokaryote classified? - Answer genetic relatedness of rRNA sequences
3 domains of life on Earth: - Answer Archaea, Bacteria, Eukarya
Common features of Archae: - Answer Lack true peptidoglycan, Cell membrane lipids have
branches hydrocarbon chains, AUG codon codes for methionine.
How do archaea reproduce? - Answer binary fission, budding, or fragmentation
Shapes of Archaea? - Answer cocci, bacilli, spirals, pleomorphic
What environment do Archaea prefer? - Answer Extremophiles
, thermophiles - Answer those that grow above 45 degrees celcius; occur in hot springs and
compost piles
hyperthermophiles - Answer Archaea growing about 80 degrees celcius and some above 100
degrees celcius
halophiles - Answer "salt-loving" archaea that live in environments that have very high salt
concentrations
methanogens - Answer A group of archaebacteria that produce methane as a by product of
their metabolism. Live in colons of cows.
Low G + C Gram-Positive Bacteria - Answer Clostridia, mycoplasma, Bacillus, listeria,
lactobacillus, streptococcus, Enterococcus, staphylococcus.
High G+C Gram-positive bacteria - Answer Corynebacterium, mycobacterium,
actinomycetes,
Gram-Negative Proteobacteria - Answer Alphaproteobacteria, betaproteobacteria,
gammaproteobacteria, deltaproteobacteria, epsilonproteobacteria, zetaproteobacteria.
Clostridia - Answer Gram+ , spore-forming, obligate anaerobic bacilli, with exotoxins.
Important in medicine (difficile, perfringens, tetani) and food prep (botulinum and botox
Mycoplasmas - Answer Facultative or obligate anaerobes, lack cell walls, smaller free living
cells, colonize in mucus membranes (pneumonia and PID).
Bacillus - Answer Common in soil, form endospores
Bacillus thuringiensis - Answer Used by farmers as insecticide
Bacillus anthracis - Answer causes anthrax
Bacillus cereus - Answer causes food poisoning
Listeria - Answer Gram positive bacilli, contaminates milk and meat products, crosses
placenta during pregnancy.
Questions All Solved Correct (Rated
A+) 2025-2026 Edition.
coccus - Answer spherical
bacillus - Answer rod shaped bacteria
Spiral - Answer Spirilla
What produces endospores? - Answer gram positive:
*Bacillus* and *Clostridium*
How does an endospore form? - Answer Each vegetative cell transforms into endospore
during duress, each endospore germinates to form one vegetative cell.
What is the process of endospore formation called? - Answer Sporulation; and the return of
an endospore to its vegetative state is called germination.
Why are endospores a concern to health care professionals? - Answer Can resist attempts to
kill them and produce deadly toxins that cause fatal disease.
Examples of endospores - Answer anthrax, tetanus, and gangrene.
How do all prokaryotes reproduce? - Answer Asexually
3 main methods of prokaryote reproduction - Answer binary fission, snapping, budding
snapping division - Answer two daughter cells attached by outer layer of cell wall
viviparity - Answer young are retained within the female's body until they are mature
enough to be born
steps of binary fission - Answer 1. duplication
2. segregation
3. cytokinesis
,snapping division - Answer
Budding - Answer Asexual reproduction in which a part of the parent organism pinches off
and forms a new organism
epulopiscium - Answer giant bacterium that lives in surgeon fish and use viviparity as
method of reproduction.
diplococci - Answer cocci growing in pairs
streptococci - Answer chains of cocci
tetrads - Answer 4 cocci in a square
sarcinae - Answer cubic configuration of 8 cocci
staphylococci - Answer bacteria growing in bunches (like grapes)
palisade - Answer when bacilli divide by snapping division and the daughter cells remain
attached to from V-shapes and side bu side arrangement.
How are prokaryote classified? - Answer genetic relatedness of rRNA sequences
3 domains of life on Earth: - Answer Archaea, Bacteria, Eukarya
Common features of Archae: - Answer Lack true peptidoglycan, Cell membrane lipids have
branches hydrocarbon chains, AUG codon codes for methionine.
How do archaea reproduce? - Answer binary fission, budding, or fragmentation
Shapes of Archaea? - Answer cocci, bacilli, spirals, pleomorphic
What environment do Archaea prefer? - Answer Extremophiles
, thermophiles - Answer those that grow above 45 degrees celcius; occur in hot springs and
compost piles
hyperthermophiles - Answer Archaea growing about 80 degrees celcius and some above 100
degrees celcius
halophiles - Answer "salt-loving" archaea that live in environments that have very high salt
concentrations
methanogens - Answer A group of archaebacteria that produce methane as a by product of
their metabolism. Live in colons of cows.
Low G + C Gram-Positive Bacteria - Answer Clostridia, mycoplasma, Bacillus, listeria,
lactobacillus, streptococcus, Enterococcus, staphylococcus.
High G+C Gram-positive bacteria - Answer Corynebacterium, mycobacterium,
actinomycetes,
Gram-Negative Proteobacteria - Answer Alphaproteobacteria, betaproteobacteria,
gammaproteobacteria, deltaproteobacteria, epsilonproteobacteria, zetaproteobacteria.
Clostridia - Answer Gram+ , spore-forming, obligate anaerobic bacilli, with exotoxins.
Important in medicine (difficile, perfringens, tetani) and food prep (botulinum and botox
Mycoplasmas - Answer Facultative or obligate anaerobes, lack cell walls, smaller free living
cells, colonize in mucus membranes (pneumonia and PID).
Bacillus - Answer Common in soil, form endospores
Bacillus thuringiensis - Answer Used by farmers as insecticide
Bacillus anthracis - Answer causes anthrax
Bacillus cereus - Answer causes food poisoning
Listeria - Answer Gram positive bacilli, contaminates milk and meat products, crosses
placenta during pregnancy.
