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WorksheetsMolecular Genetics Giant Review
Total questions: 148
Worksheet time: 6hrs 47mins
Which enzyme seals okazaki fragments together on the lagging strand?
Primase
Helicase
Polymerase
Ligase
This enzyme is capable of breaking Hydrogen bonds found between the bases of DNA
Primase
DNA Helicase
DNA Polymerase
Ligase
This enzyme is used to remove short RNA bases
Topoisomerase
DNA Helicase
Exonuclease
Telomerase
The separation of the two single strands of DNA creates a ‘Y’ shape?
enzyme
unzip
A replication fork
This enzyme synthesizes short RNA sequences to guide DNA Polymerase
Primers
DNA Primase
DNA Polymerase
Topoisomerase
Which enzyme is responsible for checking DNA for errors, and fixing it?
DNA Polymerase
DNA Primase
DNA Helicase
RNA Polymerase
Each DNA molecule created contain one NEW strand and one OLD strand
True
False
Okazaki fragments are found on the _______________ strand
Leading
Lagging
This enzyme ONLY works in one direction which is 5'------> 3'
DNA Polymerase
DNA Helicase
Topoisomerase
Telomerase
Okazaki fragments are unified into a single continuous strand by the use of this enzyme
DNA Helicase
DNA Ligase
Topoisomerase
Telomerase
CAT TCA CTG
The picture below shows an enzyme unwinding and unzipping DNA.
What is the name of this enzyme?
DNA Helicase
DNA Ligase
DNA polyermase
RNA Polymerase
Match he nucleotide with its complementary nucleotide. (DNA to DNA).
Adenine -
Thymine
Guanine
Cytosine
Match he nucleotide with its complementary nucleotide. (DNA to DNA).
Cytosine-
Thymine
Guanine
Adenine
Which enzyme is responsible for adding the free nucleotides to the replicating DNA?
DNA Helicase
DNA Ligase
DNA polyermase
RNA Polymerase
Which is the first step?
DNA Helicase unwinds original DNA strand
RNA Primase lays down RNA primer for new nucleotide bases.
DNA polymerase builds new strands by bring in new nucleotide bases.
Ligase knits together fragments on lagging strand
Which is the second step?
DNA Helicase unwinds original DNA strand
RNA Primase lays down RNA primer for new nucleotide bases.
DNA polymerase builds new strands by bring in new nucleotide bases.
Ligase knits together fragments on lagging strand
Which is the third step?
DNA Helicase unwinds original DNA strand
RNA Primase lays down RNA primer for new nucleotide bases.
DNA polymerase builds new strands by bring in new nucleotide bases.
Ligase knits together fragments on lagging strand
Which is the fourth step?
DNA Helicase unwinds original DNA strand
RNA Primase lays down RNA primer for new nucleotide bases.
DNA polymerase builds new strands by bring in new nucleotide bases.
Ligase knits together fragments on lagging strand
Which letter in the picture below depicts the leading strand in DNA replication?
A
C
B
None of the above
Which letter in the picture below depicts the lagging strand in DNA replication?
A
C
B
None of the above
. What are the building blocks of proteins called?
nucleotides
proteins
amino acids
carbohydrates
An mRNA molecule is produced in which step of protein synthesis:
replication
transcription
duplication
translation
what is the complementary tRNA anticodons?
Overall, protein synthesis consists of these steps
DNA synthesis, RNA synthesis and transcription
transcription and translation
DNA synthesis, transcription and translation
ATG GGA ACT CCA
TRANSCRIBE this DNA sequence into RNA: TAC GTT ACT
AUG CAA UGA
ATG CAA TGA
AUG GAT UGA
TAC GTT ACT
Which of the following are differences in the structure between RNA and DNA
DNA uses deoxyribose sugar, RNA uses sugar ribose
DNA pairs Adenine with Uracil, RNA pairs Adenine with Thymine
DNA is a double helix, RNA is a single helix
DNA pairs Adenine with Thymine, RNA pairs Adenine with Uracil
Which organelle is the location where protein is made?
Ribosome
Nucleus
Cytoplasm
Nucleotide
During transcription, this type of ribonucleic acid is responsible for copying the DNA and brining it out of the nucleus.
tRNA
mRNA
rRNA
dRNA
When these bond together, they form a protein
Amino Acids
Peptide Bonds
Ribose
Nucleotides
These building blocks consist of a sugar, phosphate, and nitrogen base.
Ribose
Nucleotide
Gene
Protein
A string of nucleotides that contain the information to make a specific protein
Ribose
Amino Acids
tRNA
Gene
During translation, this type of ribonucleic acid is responsible for delivering amino acids to help make a protein.
mRNA
rRNA
tRNA
dRNA
There are a total of ____ different amino acids
20
1
4
unlimited
How many amino acids are found on one tRNA?
20
4
1
3
Which of the following is the complementary mRNA sequence to this DNA strand: AACTGAA
UUGACUU
TTGACTT
AACTGAA
AACUGAA
GTAGTCA
Which of the following occurs when RNA polymerase attaches a promoter DNA?
elongation of mRNA
termination of mRNA
initiation of a protein
initiation of mRNA
A gene is
the same as a chromosome
the info for making a polypeptide
made of RNA
made of protein
During the process of translation, ____ matches a nucleic acid codon with the proper amino acid.
a ribosome
ATP
polymerase
mRNA
When RNA is being made, the RNA base ____ always pairs with the base ___ in DNA.
U-T
T-G
U-A
A-U
A polypeptide is a sequence of ____________________ held together by a ______________ bond.
amino acids; peptide
fatty acids; ionic
proteins; hydrogen
fatty acids; covalent
What is the role of RNA polymerase in transcription?
Unzips DNA strands and builds mRNA
Unzips RNA Strands
Builds mRNA
Builds DNA
Specific base sequences on a DNA strand that can bind to RNA polymerase to initiate transcription.
primase
promoter
primer
polymerase
Each tRNA molecule can code for only one amino acid.
True
False
After coping the code from DNA, mRNA goes through a process called ________. This is where introns are cut out and exons are put together to form the final mRNA sequence.
translation
transcription
splicing
replication
A single gene can produce many different mRNA molecules to create different proteins for different tissues because of
transcription
translation
duplication
splicing
Which amino acid is made from the RNA codon UUU?
5'-ATGCCAT-3'
Which of the following is a base pair?
Adenine - Cytosine
Cytosine - Thymine
Deoxyribose - Cytosine
Cytosine - Guanine
According to Chargaff's rule, Cytosine always pair with
Adenine
Uracil
Thymine
Guanine
How is the instructions for your traits carried on a DNA molecule?
Sequence of the nitrogen bases
In the Deoxyribose Sugar
In the bond between the phosphate and the sugar
In the phosphate group
Which of the following is not a component of DNA?
Deoxyribose Sugar
Phosphate Group
Carbon Base
Nitrogen Base
According to the Base Pair rule, Cytosine always pairs with
Adenine
Uracil
Thymine
Guanine
The twisted ladder shape of DNA is known as a
Double Helix
Triple Helix
Single Helix
Double felix
How is the instructions for your traits carried on a DNA molecule?
Sequence of the nitrogen bases
In the Deoxyribose Sugar
In the bond between the phosphate and the sugar
In the phosphate group
Which of the following is not a function of DNA?
Stores genetic information
Codes for proteins
Helps determines your traits
Tells your body when to move
