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MCB 2050 Yankulov EXAM ACTUAL EXAM ALL QUESTIONS AND CORRECT ANSWERS LATEST UPDATE THIS YEAR-JUST RELEASED.pdf 1

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Tap on AVAILABLE IN BUNDLE / PACKAGE DEAL to unlock free bonus exams — save more while getting everything you need! You’ll be glad you did! The MCB 2050 Yankulov EXAM ACTUAL EXAM ALL QUESTIONS AND CORRECT ANSWERS LATEST UPDATE THIS YEAR–JUST RELEASED.pdf delivers a fully updated and comprehensive study resource designed to help candidates confidently prepare for the MCB 2050 course exam authored or instructed by Yankulov. This in-depth exam guide covers all essential topics assessed on the exam, including molecular and cellular biology principles, cell structure and function, genetics, gene regulation, protein synthesis, enzyme activity, cellular metabolism, signal transduction, and experimental techniques in molecular biology. Emphasis is placed on both theoretical understanding and practical application to ensure candidates are fully prepared for both conceptual and analytical questions. The complete question set mirrors the structure and rigor of the actual MCB 2050 Yankulov exam, featuring scenario-based, problem-solving, and application-focused questions. Each question is paired with a verified correct answer to clarify key concepts, reinforce understanding, and strengthen critical thinking and reasoning skills in molecular and cellular biology. Ideal for undergraduate biology students, laboratory researchers, and certification candidates, this resource provides structured review, targeted practice, and the confidence needed to successfully pass the MCB 2050 Yankulov Exam while demonstrating mastery of essential molecular and cellular biology concepts.

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MCB 2050
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In order to use a promoter plasmid to study the regulatory d) promoter region; upstream of the reporter gene
elements of a gene of interest, the _________ of your gene of
interest is inserted into the reporter plasmid _________.
a) open reading frame; upstream of the reporter gene
b) exons; upstream of the plasmid reporter
c) coding region; downstream of the plasmid reporter
d) promoter region; upstream of the reporter gene
e) structural region; downstream of the reporter gene


Which element within the eukaryotic promoter has the most GC box
significant impact of transcription when deleted?
Relative promoter activity after deletion....
TATA box- 38%
-40 to -70 region- 95%
GC box- 14%
CAAT box- 50%
-110 to -130 region- 114%


Sex determination in Drosophila embryos and post b) Alternate splicing
transcriptional regulation of the sxl, tra, and dsx transcripts are
an example of:
a) Non-disjunction
b) Alternate splicing
c) Gene expression
d) Transcriptional regulation


Which of the following RNA molecule binds perfectly to b) siRNA
mRNA leading to it's rapid degradation?
Question 2 options:
a) miRNA
b) siRNA
c) tRNA
d) rRNA

,In eukaryotic cells, control of gene expression occurs at d) mRNA stability
multiple levels. Poly-A tail length represents an aspect of
which level of control?
a) mRNA splicing
b) Post translational control
c) Transcriptional control
d) mRNA stability


The functional Sxl protein acts on which of the following pre- a) tra and c) sxl
mRNA transcripts to regulate sex determination in Drosphila
embryos? Select all that apply.
a) tra
b) Tra2
c) sxl
d) dsx


Complete the following sentences regarding the sex a) tra 1-3 splice transcript, c) dsx 3-5 splice transcript, b) dsx 3-4 splice transcript
determination in Drosophila embryos with the appropriate
selection from the list provided. Note some matches may be
used more than once.


Functional Slx protein acts on the tra pre-mRNA transcript to
produce the _____________ .


In the absence of functional Sxl protein the ____________ is
produced in Drosophila.


The presence of Tra protein leads to the production of the
___________ .


a) tra 1-3 splice transcript
b) dsx 3-4 splice transcript
c) dsx 3-5 splice transcript
d) slx 2-4 splice transcript

, Which of the following statements regarding miRNA and a) Both siRNA and miRNA act to inhibit or reduce translation of target mRNA. and d)
siRNA mediated post transcriptional regulation are correct. siRNA bind perfectly to the target mRNA while miRNA bind imperfectly.
Select all that apply.
a) Both siRNA and miRNA act to inhibit or reduce translation of
target mRNA.
b) RISC only associates with siRNA to aid in the destruction of
target mRNA.
c) Both siRNA and miRNA lead to the rapid destruction of
bound target mRNA.
d) siRNA bind perfectly to the target mRNA while miRNA bind
imperfectly.


What is one thing that distinguishes reverse transcriptase PCR b) The use of mRNA rather than DNA as an original template.
(RT-PCR) from quantitative PCR (qPCR)?
a) The ability to exponentially amplify DNA copy number.
b) The use of mRNA rather than DNA as an original template.
c) The use of temperature resistant taq DNA polymerase.
d) The use of DNA primers to replicate specific sequences.


The process of quantitative PCR (qPCR) utilizes ___________ in c) Fluorescently labeled dsDNA
order to monitor and quantify the amplification of the target
DNA.
a) Taq DNA polymerase
b) Fluorescently labeled ddNTPs
c) Fluorescently labeled dsDNA
d) Reverse Transcriptase


Which of the following reagents are used in a qPCR reaction? a, c, d, e, g
Select all that apply.
a) Reverse transcriptase
b) taq DNA polymerase
c) ddNTPs
d) DNA primers
e) Fluorescent dsDNA binding dye
f) Fluorescently labeled dNTPs
g) dNTPs

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