Font size
WorksheetsDNA and RNA-CSHR 1001
Total questions: 19
Worksheet time: 10mins
Match the appropriate nitrogenous base pairs in DNA
A-U
C-G
A-G
C-T
A-T
C-G
A-U
C-T
What is the complementary strand for the DNA sequence AACC?
Match the appropriate nitrogenous bases to their kind (purine/pyrimidine)
purines: C, U, T
pyrimidines: A, G
purines: A, T
pyrimidines: C, U, G
purines: A, U
pyrimidines: G, C, T
purines: A, G
pyrimidines: C, U, T
The new DNA strand that grows continuously in the 5' to 3' direction is called the _____________
Leading strand
Lagging Strand
What protects genetic information contained at the ends of eukaryotic chromosomes?
DNA pol I
Histones
Telomeres
DNA ligase
Which bond links two nucleotides together?
phosphodiester bond
hydrogen bond
covalent bond
ionic bond
What is the directionality of DNA?
DNA/RNA is synthesized in the 5' to 3' direction
DNA/RNA is synthesized in the 3' to 5' direction
Nitrogenous Bases are joined by which type of bond
Phosphodiester Bonds
Polar Bonds
Ionic Bonds
Hydrogen Bonds
Match the proteins involved in initiating replication:
(1) synthesizes a short, temporary RNA primer on each DNA strand
(2) recognizes RNA primer and adds nucleotides to the 3' OH end of nucleotide (also proof reads and repairs any mistakes)
(3) replaces RNA primers with corresponding nucleotides
(4) seals gaps between Okazaki fragments
(1) DNA primase
(2) DNA polymerase III
(3) DNA polymerase I
(4) DNA ligase
(1) DNA primase
(2) DNA polymerase I
(3) DNA polymerase III
(4) DNA ligase
(1) DNA ligase
(2) DNA polymerase I
(3) DNA polymerase III
(4) DNA primase
(1) DNA ligase
(2) DNA polymerase III
(3) DNA polymerase I
(4) DNA primase
How do cells make new copies of their DNA?
semi-conservative replication
conservative replication
dispersive replication
Which protein binds to the replication fork and continues to break hydrogen bonds between 2 strands?
topoisomerase
DNA helicase
DNA polymerase III
DNA ligase
Which letter in the picture represents Okazaki fragments
A-lagging strand
B lagging strand
C-replication fork
C-leading strand.
Match the proteins involved in preparing for DNA replication:
(1) breaks hydrogen bonds between DNA strands
(2) prevent separated strands from rejoining
(3) relieves torsional strain on the double helix as it unravels
(1) DNA helicase
(2) topoisomerase
(3) SSB proteins
(1) DNA helicase
(2) SSB proteins
(3) topoisomerase
(1) SSB proteins
(2) topoisomerase
(3) DNA helicase
(1) topoisomerase
(2) DNA helicase
(3) SSB proteins
Which strand is copied faster
Leading
Lagging
Problem: DNA polymerase III cannot add to the final sequence of DNA to the 5' end of the lagging strand. What's the solution? (1 word)
(a)
Charge of the DNA molecule
Negative
Positive
Prokaryotic RNA replication occurs through multiple replication orgins
True
False
A molecule of DNA contains all of the following except
Nitrogenous Bases
Sugar
Sulfur
Phosphate
Which of these bases do not exists in RNA
A
T
G
U
