

Understanding DNA Mutations and Codons
Interactive Video
•
Science
•
9th Grade
•
Practice Problem
•
Hard
Areej Sualeh
FREE Resource
9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a DNA sequence is ATGC, what would be the corresponding RNA sequence?
TACG
UACG
AUGC
AUCG
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Using the provided codon wheel, what amino acid does the RNA codon CUA code for?
Leucine (Leu)
Proline (Pro)
Histidine (His)
Arginine (Arg)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of a stop codon during protein synthesis?
To initiate the translation process.
To signal the end of the amino acid chain.
To change the type of amino acid being added.
To repair errors in the RNA sequence.
4.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Are you enjoying the video lesson?
Yes
No
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When a single nucleotide base in a DNA sequence is replaced by a different base, what type of mutation has occurred?
Frameshift mutation
Deletion mutation
Insertion mutation
Substitution mutation
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of mutation occurs when a single nucleotide substitution in the DNA sequence leads to a premature stop codon in the mRNA?
Missense mutation
Nonsense mutation
Silent mutation
Frameshift mutation
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If an 'A' nucleotide is inserted into the DNA sequence TTC GCT ATT after the first 'C', what would be the second amino acid coded for in the resulting mRNA sequence?
Arginine
Serine
Isoleucine
Lysine
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