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WorksheetsDNA/RNA/PS
Total questions: 53
Worksheet time: 42mins
Name
Class
Date
1.
In an analysis of the nucleotide composition of DNA, which of the following will be found?
a)
A = C
b)
A + C = G + T
c)
A = G and C = T
d)
G + C = A + T
2.
In transcription, there is a promoter sequence located within the DNA that acts as the starting point for mRNA polymerase to transcribe DNA into mRNA. Part of this promoter sequence includes a short sequence known as the TATA box, which is said to be highly conserved. What is the evolutionary significance of this?
a)
The sequence evolves rapidly.
b)
The sequence has a high degree of mutation.
c)
The sequence is transcribed at the end of every gene.
d)
Mutations in this sequence are selected against.
3.
In transcription, there is a promoter sequence located within the DNA that acts as the starting point for mRNA polymerase to transcribe DNA into mRNA. Part of this promoter sequence includes a short sequence known as the TATA box, which is said to be highly conserved. What is the evolutionary significance of this?
a)
The sequence evolves rapidly.
b)
The sequence has a high degree of mutation.
c)
The sequence is transcribed at the end of every gene.
d)
Mutations in this sequence are selected against.
4.
What amino acid sequence will be generated based on the following mRNA codon sequence? AUG - GUA - AGU
a)
met - val - ser
b)
met - ser - val
c)
met - glu - ser
d)
met - val - gly
5.
A mutation occurs in the gene encoding the protein responsible for making DNA polymerase. What will be the result?
a)
DNA
will not unwind properly during the replication process.
b)
RNA
nucleotides will not be properly matched up to their DNA complements during
transcription.
c)
mRNA
will not be correctly edited in eukaryote cells undergoing transcription.
d)
DNA nucleotides will not be properly matched up to their
complements during replication.
6.
DNA is said to be an antiparallel molecule. What does this mean?
a)
The twisting nature of DNA creates nonparallel strands.
b)
The 5' to 3' direction of one strand runs counter to the 5' to 3' direction of the other strand.
c)
One strand is positively charged and the other is negatively charged.
d)
One strand contains only purines and the other contains only pyrimidines.
7.
Replicate the following strand of DNA:
AATCATGGA
AATCATGGA
a)
AATCATGGA
b)
TTAGTACCT
c)
UUAGUACCU
d)
GGATAUCUA
8.
The enzyme that unzips the DNA to prepare for replication
a)
helicase
b)
replicase
c)
polymerase
d)
synthase
9.
DNA replication results in two DNA molecules,
a)
each one with two original strands
b)
each one with two new strands
c)
each one with one new strand and one original strand
d)
one with two new strands and the other with two original strands
10.
order of replication
a)
3, 2, 1, 4
b)
2, 1, 4, 3
c)
2, 3, 1, 4
d)
3, 4, 1, 2
11.
The bonds that hold the two strands of DNA together come from...
a)
the attraction of phosphate groups
b)
strong bonds between bases and sugars
c)
carbon to carbon bonds in the sugar
d)
weak hydrogen bonds between the bases
12.
After analyzing a sample of DNA, a scientist recorded the data shown in the table. What percentage of the DNA sample is cytosine?
a)
22%
b)
25%
c)
28%
d)
56%
13.
This enzyme joins Okazaki fragments together.
a)
Polymerase
b)
Ligase
c)
Telomerase
d)
Helicase
14.
DNA is built in the
a)
3'-3' direction
b)
5'-5' direction
c)
3'-5' direction
d)
5'-3' direction
15.
The ___________________ strand builds continuously.
a)
Lagging
b)
Ligase
c)
Leading
d)
Telomeres
16.
What is a codon?
a)
It is a three letter section of bases that are read by ribosomes to stamp amino acids into a protein
b)
They are the codes on the DNA (hence "code-on"
c)
It is a type of mutation that occurs when there has been a substitution, deletion or insertion.
d)
It is a made up word for this quiz.
17.
If the percentage of DNA is made of 30% Thymine, what is the correct percentage of Guanine?
a)
30
b)
15
c)
20
d)
60
18.
The DNA nucleotide is composed of three parts. Which two components make up the nucleotide backbone?
a)
ribose sugar and base
b)
ribose sugar and phosphate group
c)
nitrogen base and deoxyribose sugar
d)
deoxyribose sugar and phosphate group
19.
Why is DNA important?
a)
it is very small and very complicated
b)
it's in everything
c)
it serves as the blueprint for traits of all living things
d)
because we eat it every day for energy
20.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
21.
Describes the twisted ladder-like shape of a DNA molecule
a)
Nitrogen Base
b)
Hexagon
c)
Double Helix
22.
The method of DNA replication is known as:
a)
Semi-conservative
b)
Conservative
c)
Dispersive
d)
Complementary
23.
Chargraff's Rule says that
a)
Adenine will be equal to Thymine
b)
Cytosine will be equal to Thymine
c)
Uracil will be equal to Guanine
d)
Adenine will be equal to Cytosine
24.
DNA and RNA are what type of biomolecule
a)
Proteins
b)
Lipids
c)
Nucleic Acids
d)
Carbohydrates
25.
The principle Chargaff created that said adenine pairs with thymine and guanine pairs with cytosine is called
a)
base pairing rule
b)
super coiling rule
c)
replication rule
d)
substitution rule
26.
Who was responsible for determining the structure of DNA?
a)
James Watson
b)
Francis Crick
c)
Rosalind Franklin
d)
All of the above
27.
What is the structure of DNA?
a)
A single helix
b)
Nitrogen bases
c)
A double helix
d)
It has no structure
28.
Fill in the complementary bases according to the base-pair rule in DNA: A T C C A G
a)
T U G G T C
b)
T A G G T C
c)
T A C G T G
d)
T A C C A C
29.
The enzyme that attaches free nucleotides to the newly unzipped old strands is called
a)
DNA Polymerase
b)
Lactase
c)
DNA Acitase
d)
Polyatomic Ligase
30.
Transcription is the process where
a)
DNA is replicated
b)
DNA is copied into mRNA
c)
DNA is copied in tRNA
d)
DNA is copied
31.
In comparison to DNA, mRNA is
a)
Shorter
b)
Longer
c)
The same length
d)
Double stranded
32.
Which of the following is not a form of RNA:
a)
tRNA
b)
mRNA
c)
pRNA
33.
Which process is used to copy DNA in the nucleus?
a)
replication
b)
transcription
c)
translation
34.
Which process is used to make mRNA from the DNA in the nucleus?
a)
transcription
b)
translation
c)
replication
35.
Which RNA bases would pair with TACGAA in transcription?
a)
AUGCUU
b)
ATGCTT
c)
GCATCC
d)
GCAUCC
36.
In DNA replication, which enzyme is responsible for building the new DNA strand?
a)
helicase
b)
polymerase
c)
ligase
d)
primase
37.
What is occurring in this picture?
a)
Translation
b)
Replication
c)
Translocation
d)
Transcription
38.
One difference between DNA and RNA is that....
a)
Only RNA has the base URACIL
b)
only RNA contains the base THYMINE
c)
only RNA contains the base CYTOSINE
d)
only RNA contained the base GUANINE
39.
What process is being shown here?
a)
Replication
b)
Translation
c)
Transcription
40.
Where does transcription take place?
a)
nucleus
b)
ribosome
c)
cytoplasm
d)
smooth ER
41.
A triplet of mRNA is called a
a)
codon
b)
anticodon
c)
amino acid
d)
peptide bond
42.
An amino acid is found on one end of a tRNA molecule while a triplet code is found on the other end. It is called a(n)
a)
codon
b)
anticodon
c)
amino acid
d)
peptide bond
43.
Brings the amino acids to the ribosome
a)
mRNA
b)
tRNA
c)
rRNA
d)
DNA
44.
What would be the tRNA anticodon for the mRNA codon CAG?
a)
GTC
b)
GUC
c)
CUG
d)
CAG
45.
Which types of cells can begin the process of translation even before the mRNA has been completely transcribed?
a)
Eukaryotes
b)
Prokaryotes
c)
Both Prokaryotes and Eukaryotes can
d)
No cells can can do this
46.
The job of tRNA is to
a)
carry amino acids to the ribisomes
b)
carry ribisomes to the ER
c)
carry glucose to mitochondria
d)
carry mRNA out of the nucleus
47.
What is the correct amino acid sequence for the mRNA code AUGCCAGUAUGA
a)
Met-Pro-Ala-Val
b)
Met-Pro-Val
c)
Tyr-Gly-His
d)
Tyr-Gly-Arg-His
48.
Translation takes place in the
a)
ribosome
b)
chloroplast
c)
nucleus
d)
mitochondria
49.
What amino acid is represented by the codon UUA?
a)
Phenylalanine
b)
Tyrosine
c)
Leucine
d)
Stop codon
50.
Codes for a single protein
a)
DNA
b)
Gene
c)
Chromosome
d)
Chromatin
51.
A tRNA that carries the amino acid methionine pairs with which type of codon?
a)
serine codon
b)
tRNA codon
c)
start codon
d)
anticodon
52.
The central dogma of biology states that information flows in one direction from
a)
nuclei to RNA to cytoplasm
b)
ribosomes to proteins to DNA
c)
genes to nuclei to ribosomes
d)
DNA to RNA to proteins
53.
New nucleotides are added to the
a)
3' end
b)
5' end
c)
both the 3' and 5' ends
d)
4' end
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