Exam 2: BIO 205/ BIO205 (NEW 2025/ 2026 Update) Microbiology Guide| Questions & Answers| Grade A| 100% Correct (Verified Solutions)- GCU

Examl 2:l BIOl 205/l BIO205l (NEWl 2025/l
2026l Update)l Microbiologyl Guide|l
Questionsl &l Answers|l Gradel A|l 100%l
Correctl (Verifiedl Solutions)-l GCU

QUESTION
whatl arel twol waysl ofl geneticl changel inl bacteria?

Answer:
mutationl andl horizontall genel transfer



QUESTION
genotype

Answer:
geneticl makeupl ofl anl organism



QUESTION
phenotype

Answer:
physicall characteristicsl ofl anl organism



QUESTION
Auxotroph

Answer:
growthl factorl isl required
growl onl nutrientl agar



QUESTION

,phototrophs

Answer:
dol notl requirel al growthl factorl
canl growl onl glucosel saltsl agar



QUESTION
Trp-

Answer:
thel genotypel ofl al bacteriuml thatl lacksl al functionall genel forl tryptophanl synthesisl andl
thisl bacterial isl auxotrophicl forl tryptophan



QUESTION
Whatl determinesl thel primaryl structurel ofl proteins?

Answer:
thel sequencel ofl aminol acids



QUESTION
Whatl isl al mutation

Answer:
thel sourcel ofl variationl amongl microorganismsl thatl werel oncel identical



QUESTION
Whatl reducesl thel chancel ofl developingl resistancel tol antibiotics

Answer:
physiciansl usel 2l antibioticsl tol reducel resistance



QUESTION
Whatl isl al frameshiftl mutation?

Answer:

, thel deletionl orl insertionl ofl nucleotidesl duringl chromosomall replication



QUESTION
Whatl isl al deleteriousl mutation?

Answer:
deletion/addition



QUESTION
transposons

Answer:
segmentsl ol DNAl capablel ofl movingl froml onel areal inl DNAl tol another



QUESTION
Whatl arel intercalatingl agents?

Answer:
UVl light
Xl ray



QUESTION
Whatl arel thel impactsl ofl intercalatingl agents?

Answer:
causel singlel andl doublel standsl tol breakl inl DNA



QUESTION
DNAl ligase

Answer:
anl enzymel thatl repairsl thel replicationl andl recombinationl ofl DNA



QUESTION