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BCH 371 - Final Exam questions well answered
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BCH 371 - Final Exam questions well answered
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BCH 371 - Final ExamThese/this amino acid/s contain sulfur
a. methionine
b. cysteine
c. serine
d. both a and b
d. both a and c - correct answer ✔✔d. both a and b
Replication ends at
a. origin
b. Ter sites
c. tus sites
d. tata box - correct answer ✔✔b. ter sites
what will be the pH of an HCL soltion that has OH= concentrati9on of 10-12 M?
a. pH 2
b. pH 12
c. pH 10
d. pH 1 - correct answer ✔✔a. pH 2
If a protein has a net negative charge at a given pH then what type of chromatography will you use to
separate it from other contaminant proteins?
a. anion exchange chromatography
b. size exclusion chromatography
c. cation exchange chromatography
d. affinity chromatography - correct answer ✔✔c. cation exchange chromatography
,What type of inhibition is this? - correct answer ✔✔
16s RNA are present in which of the following ribosomal subunits?
a. 30s
b. 50s
c. 60s
d. 40s - correct answer ✔✔a. 30s
Below molecule is:
a. N2-methylguanosine
b. N4-methylguanosine
c. N6-methyladenosine
d. 5-methyladenosine - correct answer ✔✔b. N4-methylguanosine
Which of the following is TRUE for DNA POL 1?
a. pol 1 can do nick translation
b. pol 1 is ideal for replication
c. pol 1 has the highest processivity
d. pol 1 does not have proofreading activity - correct answer ✔✔a. pol 1 can do nick translation
which of the following organisms can survive in presence of oxygen but prefers not having it around?
a. obligate aerobes
b. facultative anaerobes
c. anaerobes
d. obligate anaerobes - correct answer ✔✔b. facultative anaerobes
ethanol fermentation in yeast stars with pyruvate and goes through __________ intermediate and then
to ethanol.
a. ketone
, b. aldehyde
c. alcohol
d. ether - correct answer ✔✔b. aldehyde
this is the only citric acid cycle reaction that produces FADH2 which can enter electron transport chain
through complex 2.
a. succinate to fumarate
b. fumarate to malate
c. malate to oxaloacetate
d. succinyl CoA to succinate - correct answer ✔✔succinate to fumarate
Nucleotides in one DNA strand are held together by _______ bonds
a. phosphodiester
b. glycosidie
c. hydrogen bonds
d. peptide bonds - correct answer ✔✔a. phosphodiester
which of the following amino acid participates in acid-base catalysis
a. cysteine
b. glutamine
c. asparagine
d. leucine - correct answer ✔✔b. glutamine
maximum gene expression for lac operon will occur by __________.
a. glucose high, cAMP low, lactose absent
b. glucose low camp low, lactose absent
c. glucose low, camp high, lactose present
d. glucose high, camp high, lactose present - correct answer ✔✔c. glucose low, camp high, lactose
present
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