Codons
DNA vs. RNA
Mutations
Transcription & Translation Practice
Codon Practice
100
What is a codon?
A codon is a group of 3 nucleotides.
100
Identify the base pairings of DNA and RNA.
DNA:
A-T
C-G
RNA:
A-U
C-G
100
What is the definition of a mutation?
a mutation is a change in the sequence of DNA nucleotides.
100
Provide the complementary DNA strand to the following strand below.
CGCTAA
GCGATT
100
Based on your Codon chart, name this strand of RNA.
5'-AUGGCAAGA-3'
What is Met-Ala-Arg
200
What is the name of the start codon?
What is Met(Methionine)?
200
Identify this RNA structure as mRNA, tRNA, or rRNA.
This structure is a tRNA.
200
Identify the mutation as a point or frameshift.
The mutation is a frameshift.
200
What does tRNA Stand for?
Transfer RNA.
200
Name the following Amino Acid sequence using your codon chart.
UGG
Tryptophan (Trp)
300
How many Amino Acids does "Arg" code for?
6
300
What kind of bond hold the nucleotides together creating the double helix structure?
What is a Hydrogen Bond?
300
Identify the type of mutation.
What is a substitution mutation.
300
Transcribe the strand below.
AGGCGCATA
UCCGCUAU
300
Identify the 3 STOP codons and give their Amino Acid sequence.
UAA,UAG,UGA
400
What are the amino acid sequences for Histidine?
CAU, CAC
400
What type of ribonucleic acid is like a protein synthesis factory? mRNA, tRNA, rRNA?
What is rRNA.
400
What is the difference between a Point and a Frameshift mutation.
Point is a substitution and Frameshift is deletion or insertion.
400
Translate the strand below.
AUGGGCUGA
Met-Gly-Stop
400
If a codon of mRNA codes for U instead of T, what would change in this strand (A-T-G-G-C-C-T-G-G-A-C-T-T-C-A)?
(A-U-G-G-C-C-U-G-G-A-C-U-U-C-A)
500
How many Codons are there?
20
500
Provide 2 differences between DNA and RNA
1. double vs single strand
2. Base pairings- T goes away; U replaces T
3. DNA- Nucleus
RNA- Ribosomes
500
When nucleotides are removed and the sequence shifts, what kind of mutation is this?
Deletion/ Frameshift
500
Transcribe the sequence below.
AAGCGCATAGGA
UUCGCGUAUCCU
500
Given the DNA sequence 5'-CACGTATGC-3', provide the protein names using your codon chart.
3'-GUGCAUACG-5'
Val-His-Thr