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WorksheetsDNA and Gene Expression
Total questions: 28
Worksheet time: 1hrs 26mins
Find the complementary DNA strand to the following DNA template.
5'- ATG TGA CAG -3'
5'- ATG TGA CAG -3'
3'- TAC ACT GTC -5'
3'- UAC ACU GUC-5'
3'- CAT TCA CTG -5'
In eukaryotes, which organelle is DNA usually found in?
cell membrane
vacuole
chloroplast
nucleus
DNA is made up of small units (monomers) called:
amino acids
nucleotides
fatty acids
polysaccharides
DNA is a type of
nucleic acid
lipid
carbohydrate
protein
The process of making a copy of a DNA molecule is called...
DNA replication
DNA recycling
DNA duplication
DNA polymerase
DNA Helicase and DNA Polymerase are alike in that both are
nucleotides
nucleic acids
enzymes
bases
DNA helicase's main function is to
unwind the double helix of DNA
add complementary base pairs to create a new DNA strand
bind DNA fragments together
none of the above
DNA must be replicated before...
cell death
making new cells
digesting food
making proteins
DNA replication is semi-conservative, which means that at the end of replication, each new DNA molecule is composed of...
two new strands of DNA
two original (old) strands of DNA
either two new or two original strands of DNA
one new strand and one original strand of DNA
After DNA is successfully replicated, the 2 resulting DNA molecules should be...
similar
identical
opposites
different
In DNA replication, a new strand of DNA can be created...
only in the 5' --> 3' direction
only in the 3' --> 5' direction
in both directions
always towards the left
The two strands of every DNA molecule are complementary, which means...
opposite directions
parallel
matching base pairs
identical
When DNA is being replicated, which strand can be created continuously (with no breaks)?
the template strand
the leading strand
the lagging strand
the primary strand
Transcription occurs in the (a) of a cell.
Translation happens in the (a) of a cell.
In transcription, the information on DNA is copied onto _____.
mRNA
more DNA
tRNA
amino acids
What is created when mRNA is TRANSLATED by the ribosomes?
mRNA
more DNA
tRNA
amino acids
A group of three nucleotide bases on mRNA is called a (a) .
Transcription of the DNA sequence AAGTTC will produce the mRNA sequence (a) .
Each codon matches with __________.
an amino acid
mRNA
a ribosome
DNA
Which amino acid is coded for by the codon AAC?
(a)
Which amino acids are coded for by the following mRNA codons? GCG - AAG - CUG - UAA
(a)
If a mutation in DNA DOES NOT change the final amino acid, that is called a _______ mutation
silent
nonsense
missense
harmful
What is the central dogma of biology?
The genes in our DNA code for proteins that give us the traits that we have.
There are 20 amino acids.
All organisms have the same exact DNA.
Proteins store genetic information in our cells.
Why does DNA need to be transcribed into mRNA before it can be translated into proteins?
Describe the job of tRNA molecules in translation.
In translation, codons on the mRNA molecule match with the __________ on the tRNA molecules.
anticodons
genes
mutations
ribosomes
