WorksheetsPractice Quiz 2.2 - Protein Synthesis & Mutations
Total questions: 15
Worksheet time: 45mins
Which numbered processes [1 thru 5] would happen in the nucleus of a cell?
3 and 4
1 and 2
2 and 3
4 and 5
What is being made [synthesized] at process number 3, RNA ---> Polypeptides?
Two complimentary strands of DNA.
A DNA strand.
An RNA strand.
A chain of amino acids.
Look at the image. What processes is happening where arrow 2 is pointing?
DNA Replication
RNA Translation
RNA Transcription
Cell Respiration
Look at the image. What processes is happening where arrow 1 is pointing?
mRNA is being transcribed in the cytoplasm.
Proteins are being used to create RNA in the cytoplasm.
DNA is being replicated in the nucleus.
tRNA is bringing amino acids to the ribosome.
The relationship of cells, DNA, and proteins is best stated as:
DNA is composed of proteins that carry coded information for how cells function.
Cells contain DNA that controls the production of proteins.
Proteins are used to produce cells that link amino acids together into DNA.
Cells are linked together by proteins to make different kinds of DNA molecules.
Protein synthesis [making] in cells is the primary job/function of:
mitochondria.
ribosomes.
choroplasts.
Golgi bodies.
A ___________ is basically a picture of all 23 pairs of your chromosomes.
syndrome
karyotype
chromatid
phenotype
A radiation leak you were exposed to mutated a codon in your DNA from GTT to ATT. What impact would this mutation have on your protein in this case?
[Hint: DNA --> RNA--> Proteins]
This would cause a change in every amino acid after this point.
This will not change any amino acid in the protein.
This would cause the protein to have one different amino acid.
This mutation will cause the protein to be shorter than it was originally.
What is the complementary messenger-RNA [mRNA] sequence for the DNA sequence shown below?
C-A-A-G-G-T
C-A-A-G-G-U
C-A-A-G-G-T
G-T-T-C-C-A
G-U-U-C-C-A
Which chromosome represents an alteration known as a deletion?
1
2
3
4
Below are two sequences of a segment of DNA:
Normal sequence TAG GTC CAC
Mutated sequence TAG GTC CCC
Which type of mutation has occurred?
nonsense
deletion
missense
insertion
In the synthesis of proteins, what is the function of messenger-RNA molecules?
They act as a template for the synthesis of DNA.
They carry information that determines the sequence of amino acids.
They remove amino acids from the nucleus.
They carry specific enzymes for dehydration synthesis.
A sequence of RNA is shown: 5’ UCU UGU CGA 3’. Using the codon chart, what is the sequence of amino acids that is produced when this RNA is translated?
Ser – Cys –Arg
Ser – Trp – Asp
Thr – Asn – Glu
Cys – Phe – Leu
Sometimes a person is born with one or more extra chromosomes in each cell. This usually results in abnormalities because the affected person has:
a reduced number of genes in cell nuclei.
fewer gene mutations than a person with a normal chromosome number.
more genes in each cell than a person with a normal chromosome number.
less DNA in cell nuclei, but more proteins in cell mitochondria.
Below are two sequences of a segment of RNA.
Normal sequence: UGU – CAC – AGG – UGA
Mutated sequence: UGU – CAA – CAG – GUG – A
What type of mutation has occurred?
insertion
deletion
substitution
