Portage Learning; Essential Biology II W/Lab BIOL 102/BIOD 102
Module 1 Exam All Versions Latest Update/ Verified
Institution: Portage Learning
Course Code: BIOL 102/BIOD 102
Course Title: Essential Biology II W/Lab
Exam: Module 1
Assessment Type: Examination
Edition: Updated Version
Student Name: _______________________________
Student Id: _________________________________
Instructor: _________________________________
Instructions:
Answer All Questions.
Choose The Correct Answer
TABLE OF CONTENT
Version Exam 1.1 ----------------------------------------------------------------------------------------------------- 2
Version Exam 1.2 --------------------------------------------------------------------------------------------------- 25
QUESTIONS TYPE:
➢ Multiple Choice:
➢ True Or False:
➢ Explain Or Describe
➢ Fill In The Blank
All The Best!!
,Version Exam 1.1
Question 1. (2 Points)
True Or False: Replication Of DNA Begins At A Single Origin Of Replication And
Then Proceeds The Entire Length Of The Strand, In One Direction.
A. True
B. False
DNA Replication Begins At Origins Of Replication And Proceeds In Both Directions,
Forming Replication Forks.
Question 2. (6 Points)
Match Each Term With The Correct Definition.
Terms:
1. Origin Of Replication
2. Helicase
3. Replication Fork
4. Replication Bubble
5. Single Stranded Binding Protein
,6. Topoisomerase
7. Primase
Definitions:
A. Enzyme That Untwists The Double Helix Of DNA At The Replication Forks.
B. Y-Shaped Area Where The DNA Strand Begins To Untwist.
C. Segment Of A DNA Molecule That Is Unwinding And Undergoing Replication.
D. Act As Wedges To Keep Parent Strands Separated And Stabilized.
E. Enzyme That Functions In DNA Replication, Helping To Relieve Strain In The
Double Helix Ahead Of The Replication Fork.
F. Enzyme That Facilitates The Synthesis Of An RNA Primer By Using The Unwound
DNA Strand As Template.
G. Short Nucleotide Sequence That Encodes For A Start Signal To Initiate The Process
Of DNA Replication.
Correct Answers:
1—G
2—A
3—B
4—C
5—D
6—E
7—F
Each Enzyme Or Structure Plays A Specific Role In Unwinding, Stabilizing, And
Initiating DNA Replication.
, Question 3. (2 Points)
What Enzyme Is Responsible For Relieving The Stress Associated With The Twisting
And Untwisting Of A DNA Strand During Replication?
A. Helicase
B. Topoisomerase
C. DNA Polymerase
D. Primase
Topoisomerase Relieves Torsional Strain Ahead Of The Replication Fork By Cutting
And Rejoining DNA Strands.
Question 4. (2 Points)
As A Replicated DNA Strand Elongates, What Enzyme Is Responsible For Adding
Nucleotides?
A. Helicase
B. DNA Ligase
C. DNA Polymerase
D. RNA Primase
DNA Polymerase Adds Nucleotides To The 3′ End Of The Growing DNA Strand.
Question 5. (3 Points)
Module 1 Exam All Versions Latest Update/ Verified
Institution: Portage Learning
Course Code: BIOL 102/BIOD 102
Course Title: Essential Biology II W/Lab
Exam: Module 1
Assessment Type: Examination
Edition: Updated Version
Student Name: _______________________________
Student Id: _________________________________
Instructor: _________________________________
Instructions:
Answer All Questions.
Choose The Correct Answer
TABLE OF CONTENT
Version Exam 1.1 ----------------------------------------------------------------------------------------------------- 2
Version Exam 1.2 --------------------------------------------------------------------------------------------------- 25
QUESTIONS TYPE:
➢ Multiple Choice:
➢ True Or False:
➢ Explain Or Describe
➢ Fill In The Blank
All The Best!!
,Version Exam 1.1
Question 1. (2 Points)
True Or False: Replication Of DNA Begins At A Single Origin Of Replication And
Then Proceeds The Entire Length Of The Strand, In One Direction.
A. True
B. False
DNA Replication Begins At Origins Of Replication And Proceeds In Both Directions,
Forming Replication Forks.
Question 2. (6 Points)
Match Each Term With The Correct Definition.
Terms:
1. Origin Of Replication
2. Helicase
3. Replication Fork
4. Replication Bubble
5. Single Stranded Binding Protein
,6. Topoisomerase
7. Primase
Definitions:
A. Enzyme That Untwists The Double Helix Of DNA At The Replication Forks.
B. Y-Shaped Area Where The DNA Strand Begins To Untwist.
C. Segment Of A DNA Molecule That Is Unwinding And Undergoing Replication.
D. Act As Wedges To Keep Parent Strands Separated And Stabilized.
E. Enzyme That Functions In DNA Replication, Helping To Relieve Strain In The
Double Helix Ahead Of The Replication Fork.
F. Enzyme That Facilitates The Synthesis Of An RNA Primer By Using The Unwound
DNA Strand As Template.
G. Short Nucleotide Sequence That Encodes For A Start Signal To Initiate The Process
Of DNA Replication.
Correct Answers:
1—G
2—A
3—B
4—C
5—D
6—E
7—F
Each Enzyme Or Structure Plays A Specific Role In Unwinding, Stabilizing, And
Initiating DNA Replication.
, Question 3. (2 Points)
What Enzyme Is Responsible For Relieving The Stress Associated With The Twisting
And Untwisting Of A DNA Strand During Replication?
A. Helicase
B. Topoisomerase
C. DNA Polymerase
D. Primase
Topoisomerase Relieves Torsional Strain Ahead Of The Replication Fork By Cutting
And Rejoining DNA Strands.
Question 4. (2 Points)
As A Replicated DNA Strand Elongates, What Enzyme Is Responsible For Adding
Nucleotides?
A. Helicase
B. DNA Ligase
C. DNA Polymerase
D. RNA Primase
DNA Polymerase Adds Nucleotides To The 3′ End Of The Growing DNA Strand.
Question 5. (3 Points)
