Portage Learning Genetics BIOL 210/ BIOD 210
Module 5 Exams; All Versions Latest Update/ Verified
Institution: Portage Learning
Course Code: BIOL 210/ BIOD 210
Course Title: Genetics
Exam: Module 5
Assessment Type: Examination
Edition: Updated Version
Student Name: _______________________________
Student Id: _________________________________
Instructor: _________________________________
Instructions:
Answer All Questions.
Choose The Correct Answer
QUESTIONS TYPE:
➢ Multiple Choice:
➢ True Or False:
➢ Explain/Describe/ Identification
➢ Fill In The Blank
➢ Short Answer
All The Best!!
,1. Short Answer
Question: Consider The Following DNA Sequence 3'-AAC TAC TGT GTA - 5'
A. Write Out The Complementary RNA Sequence, Including The 5' And 3'.
B. Translation Starts On Which End Of The RNA (5' Or 3')?
C. Identify The Start Codon In The Complementary Sequence You Wrote In Part A.
ANS.
A. 5'-UUG AUG ACA CAU -3'
B. 5'
C. AUG
2. True/False
Question: Transcription Of DNA Into Mrna Does Not Require An RNA Primer.
ANS. True
Explanation: RNA Polymerase Can Initiate Transcription De Novo Without A Primer.
3. Short Answer
Question: Why Must The DNA Within Eukaryotes Be Complexed With Histone Proteins,
But Not In Bacteria? What Happens To These Complexes During DNA Replication?
ANS.
Because The Amount Of DNA In Eukaryotes Is Greater Than In Bacteria, It Must Be
Tightly Stored Using Histone Proteins. During DNA Replication, Histones Relax To
Allow Unwinding Of DNA And Return To Compact Form After Replication.
4. Matching
Question: Match Each Term With The Correct Definition:
,Ribosomes
Shelterin Complex
Codon
Reverse Transcription
Exon
ANS.
Ribosomes: Serves As A Site For Protein Synthesis
Shelterin Complex: Protects Chromosome
Codon: Three Nucleotides That Code For An Amino Acid
Reverse Transcription: Synthesis Of DNA From RNA
Exon: Mrna Sequences That Are Retained And Expressed
5. Short Answer
Question: Define The Wobble Hypothesis And Explain Why It Is Important For The
Degeneracy In Coding.
ANS.
The First Two Letters Of A Codon Are Most Important For Recognition; The Third
Letter Can “Wobble.” This Allows A Single Trna To Recognize Multiple Codons,
Supporting Redundancy In The Genetic Code.
6. Fill-In-The-Blank
Question: The ___ Element Is A ___-Acting Element That Is Located Upstream From
The Site Of Transcription Initiation.
A) Pribnow
B) Cis
C) Enhancer
D) Silencer
ANS.
, Pribnow; Cis
Explanation: The Pribnow Box Is A Cis-Acting Promoter Element In Prokaryotic
Transcription.
7. True/False
Question: A Silencer Element Is Always Located Close To The Gene That It Affects, But
An Enhancer Element Can Be Far Away.
ANS. False
Explanation: Silencers Can Also Act At A Distance, Similar To Enhancers.
8. True/False
Question: Once A Polymerase Is Moving Forward Along A Nucleotide Chain, The
Ability To Stall And Reverse Direction If Things Go Wrong Is Called Proofreading.
ANS. True
Explanation: DNA Polymerase Has A 3'→5' Exonuclease Activity That Allows
Proofreading.
9. Fill-In-The-Blank
Question: In The Process Of RNA ____, Exons Are Joined Together To Make Mature
Mrna And ___ Are Removed From The Pre-Mrna.
A) Splicing
B) Introns
C) Translation
D) Ribozymes
ANS. Splicing; Introns
Explanation: Introns Are Non-Coding Sequences Removed During Splicing To Produce
Mature Mrna.
10. Short Answer
Question: How Does Alternative Splicing Enhance The Diversity Of The Genetic Code?
Module 5 Exams; All Versions Latest Update/ Verified
Institution: Portage Learning
Course Code: BIOL 210/ BIOD 210
Course Title: Genetics
Exam: Module 5
Assessment Type: Examination
Edition: Updated Version
Student Name: _______________________________
Student Id: _________________________________
Instructor: _________________________________
Instructions:
Answer All Questions.
Choose The Correct Answer
QUESTIONS TYPE:
➢ Multiple Choice:
➢ True Or False:
➢ Explain/Describe/ Identification
➢ Fill In The Blank
➢ Short Answer
All The Best!!
,1. Short Answer
Question: Consider The Following DNA Sequence 3'-AAC TAC TGT GTA - 5'
A. Write Out The Complementary RNA Sequence, Including The 5' And 3'.
B. Translation Starts On Which End Of The RNA (5' Or 3')?
C. Identify The Start Codon In The Complementary Sequence You Wrote In Part A.
ANS.
A. 5'-UUG AUG ACA CAU -3'
B. 5'
C. AUG
2. True/False
Question: Transcription Of DNA Into Mrna Does Not Require An RNA Primer.
ANS. True
Explanation: RNA Polymerase Can Initiate Transcription De Novo Without A Primer.
3. Short Answer
Question: Why Must The DNA Within Eukaryotes Be Complexed With Histone Proteins,
But Not In Bacteria? What Happens To These Complexes During DNA Replication?
ANS.
Because The Amount Of DNA In Eukaryotes Is Greater Than In Bacteria, It Must Be
Tightly Stored Using Histone Proteins. During DNA Replication, Histones Relax To
Allow Unwinding Of DNA And Return To Compact Form After Replication.
4. Matching
Question: Match Each Term With The Correct Definition:
,Ribosomes
Shelterin Complex
Codon
Reverse Transcription
Exon
ANS.
Ribosomes: Serves As A Site For Protein Synthesis
Shelterin Complex: Protects Chromosome
Codon: Three Nucleotides That Code For An Amino Acid
Reverse Transcription: Synthesis Of DNA From RNA
Exon: Mrna Sequences That Are Retained And Expressed
5. Short Answer
Question: Define The Wobble Hypothesis And Explain Why It Is Important For The
Degeneracy In Coding.
ANS.
The First Two Letters Of A Codon Are Most Important For Recognition; The Third
Letter Can “Wobble.” This Allows A Single Trna To Recognize Multiple Codons,
Supporting Redundancy In The Genetic Code.
6. Fill-In-The-Blank
Question: The ___ Element Is A ___-Acting Element That Is Located Upstream From
The Site Of Transcription Initiation.
A) Pribnow
B) Cis
C) Enhancer
D) Silencer
ANS.
, Pribnow; Cis
Explanation: The Pribnow Box Is A Cis-Acting Promoter Element In Prokaryotic
Transcription.
7. True/False
Question: A Silencer Element Is Always Located Close To The Gene That It Affects, But
An Enhancer Element Can Be Far Away.
ANS. False
Explanation: Silencers Can Also Act At A Distance, Similar To Enhancers.
8. True/False
Question: Once A Polymerase Is Moving Forward Along A Nucleotide Chain, The
Ability To Stall And Reverse Direction If Things Go Wrong Is Called Proofreading.
ANS. True
Explanation: DNA Polymerase Has A 3'→5' Exonuclease Activity That Allows
Proofreading.
9. Fill-In-The-Blank
Question: In The Process Of RNA ____, Exons Are Joined Together To Make Mature
Mrna And ___ Are Removed From The Pre-Mrna.
A) Splicing
B) Introns
C) Translation
D) Ribozymes
ANS. Splicing; Introns
Explanation: Introns Are Non-Coding Sequences Removed During Splicing To Produce
Mature Mrna.
10. Short Answer
Question: How Does Alternative Splicing Enhance The Diversity Of The Genetic Code?
