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WorksheetsDNA
Total questions: 27
Worksheet time: 14mins
A building block of DNA or RNA, consisting of a sugar, a nitrogenous base and a phosphate group.
DNA
Nucleotide
mRNA
Nitrogen Base
A type of weak chemical bond formed between the nitrogenous bases on opposite strands of DNA.
Hydrogen
Oxygen
Carbon
Nitrogen
In a DNA strand, what nitrogen base bonds with cytosine?
adenine
thymine
guanine
uracil
Based on the replication, what will be the outcome for any resulting protein from this DNA segment?
A deletion mutation occurred, therefore there will be a frameshift and a change in the amino acid.
An insertion mutation occurred, therefore there will be a frameshift and a change in the amino acid.
No mutation occurred, therefore there will be no change in the strand or the amino acid.
A substitution mutation occurred, therefore there will be no shift in the frame but there could be a change in the amino acid.
the nucleotide that hydrogen bonds with the nucleotide adenine in DNA.
Cytosine
Thymine
Guanine
Uracil
What portion of DNA is shown with the bracket and the arrow?
The backbone of DNA made of phosphates and deoxyribose sugar
The complementary nitrogen bases
The bond between a deoxyribose molecule and a nitrogen base
The hydrogen bond between the complementary nitrogen bases
During replication, the DNA unzips and then free nucleotides are able to pair with the original strand creating two identical copies of DNA. Because the original DNA strand is reused, DNA replication can be described as what?
self-replicating
semi-automatic
mutational
semi-conservative
the nucleotide that hydrogen bonds with the nucleotide guanine in DNA or in RNA.
Cytosine
Thymine
Uracil
Adenine
the sugar included in a nucleotide building block of RNA.
Deoxy Ribose
Ribose
Deoxy
Sequence
the process of making mRNA from DNA.
Translation
Sequence
Replication
Transcription
If one side of a DNA molecule is ATT CGC, which of the following will be on the complementary strand?
TAA GCC
TAA GGC
ATT CGC
TAA GCG
The process carried out in the ribosomes where the information encoded in mRNA is used to produce a protein.
Translation
Transcription
Replication
Semi-conservative
What is true of both DNA and RNA?
They are used to put together carbohydrates
They contain sugar, phosphates, and nitrogen bases
They contain uracil
They are made of a single strand of nucleotides
Which of the following is being created from the original strand of DNA?
Transfer RNA
Messenger RNA
New DNA
Polypeptide
A building block of proteins that are added to the protein chain within a ribosome based upon the information encoded in the mRNA base sequence.
Amino Acids
Central Dogma
Nucleotide
Transfer RNA
a change in the nucleotide base sequence of a gene or DNA molecule.
Replication
Mutation
Transcription
Translation
A mutation is least likely to affect a cell when which of the following occurs?
A mutation reverses the order of bases in a DNA strand.
A mutation allows the total number of bases in a DNA sequence to remain the same.
A mutation replaces a base with its complementary base.
A mutation produces a codon that codes for the same amino acid as the original codon.
If an mRNA strand is CCG UAU, what would the amino acid sequence be?
Proline, Argenine
Proline, Tyrosine
Argenine, Histidine
Leucine, Serine
A scientist puts nucleotide chains of UUUUUU in a test tube under conditions allowing protein synthesis to occur. Soon the test tube is full of polypeptide chains composed of only the amino acid phenylalanine. What does the experiment indicate?
UUU codes for the amino acid phenylalanine
The amino acid phenylalanine is made of uracil
Protein synthesis cannot function in a test tube
Most proteins contain only one type of amino acid
The concept that genetic information encoded in DNA is transcribed to mRNA. Then the mRNA moves to the ribosome where the information is translated into the amino acid sequnce of a protein (DNA->RNA->Protein).
Central Dogma
Transcription
Translation
Replication
A partial sequence of bases from a normal hemoglobin gene and a sequence that results in sickle-cell anemia are shown below.
What type of mutation is depicted in this sequence?
Substitution
Deletion
Insertion
Frameshift
The surgar included in a nucleotide building block of DNA.
Deoxyribose
Ribose
Phosphorus
Nitrogen Base
Use the diagram below to answer the question.
Which processes occur in the nucleus?
3 and 4
1 and 2
4 and 5
2 and 3
What is structure X in figure 12-2?
a protein.
a RNA molecule.
an amino acid.
a nucleotide
When does DNA replication happen, in both eukaryotes and prokaryotes?
in the nucleus.
only to telomeres.
before cell division.
around the histones.
A mistake during DNA replication leads to a mutation in the nucleotide sequence shown below.
What kind of mutation will result from the mistake made during DNA replication in the nucleotide sequence above?
A subsitution resulting in no effect on the resulting protein.
A subsitution resulting in a different protein being produced.
An insertion resulting in a frame shift and a different protein being produced
An insertion resulting in no effect on the resulting protein.
A salmon's DNA contains 29.5% adenine. Use Chargaff's Rule to determine the percentages (%) of cytosine, guanine, and thymine found in salmon.
59% cytosine, 59% guanine, and 29.5% thymine20.5%
cytosine, 20.5% guanine, and 29.5% thymine29.5%
cytosine, 29.5% guanine, and 29.5% thymine41%
cytosine, 41% guanine, and 20.%% thymine
