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WorksheetsDNA, Replication, Transcription, and Translation
Total questions: 23
Worksheet time: 21mins
Which of the following statements about DNA is not true?.
it contains 2 chains of nucleotides
it contains deoxyribose sugar
it is replicated in preparation for cell division
it never leaves the nucleus
it has the base uracil instead of thymine
Okazaki fragments are used to elongate
)the leading strand toward the replication fork
the lagging strand toward the replication fork
both strands in both directions
)the leading strand away from the replication fork
the lagging strand away from the replication fork
The two strands of a DNA molecule are connected by
hydrogen bonds between the codons and anticodons
hydrogen bonds between the bases of one strand and the bases of another strand
hydrogen bonds between deoxyribose sugar molecules of one strand and deoxyribose molecules of the second strand
covalent bonds between phosphate groups
covalent bonds between the nitrogen bases
Which of the following cannot form a base-pair?
Cytosine DNA nucleotide with a Guanine DNA nucleotide
Adenine DNA nucleotide with a Thymine DNA nucleotide
Adenine DNA nucleotide with a Uracil RNA nucleotide
Cytosine DNA nucleotide with a Guanine RNA nucleotide
Adenine DNA nucleotide with a Thymine RNA nucleotide
Which of the following is true?
A messenger RNA molecule has the form of a double helix
Ribosomes contain RNA nucleotides and amino acids
The uracil nucleotide consists of the uracil nitrogen base, a deoxyribose sugar, and a phosphate group
When tRNA attaches to mRNA during translation, cytosine bonds to guanine and adenine bonds to thymine
In eukaryotes, DNA is manufactured in the nucleus and RNA is manufactured in the cytoplasm
All of the following enzymes are involved in DNA replication EXCEPT
helicase
DNA ligase
DNA polymerase
RNA polymerase
RNA primase
The end products of translation are
polypeptides
amino acids
lipids
RNA
DNA
Which of the following contains the code for a protein?
DNA polymerase
RNA polymerase
rRNA
tRNA
mRNA
The DNA of an elephant and the DNA of a cherry tree will probably differ in all of the following aspects EXCEPT the
kinds of genes for which the DNA codes
kinds of nucleotides utilized in forming DNA
number of DNA molecules
length of DNA molecules
sequence of DNA nucleotides
Protein synthesis consists of all of the following steps EXCEPT
replication
transcription
translation
elongation
initiation
The genetic instructions for forming a polypeptide chain are carried to the ribosome by the
tRNA
rRNA
mRNA
ATP
DNA
The mRNA actively being translated in the cytoplasm would have all of the following EXCEPT
a poly-A-tail
a 5' cap
exons
introns
RNA nucleotides
How many parts are there to a ribosome?
1
2
3
4
Which of the following statements about DNA replication is not true?
The process insures that each new cell will have the same genetic material as the original cell
The process begins at a single location on the DNA molecule called the origin of replication
The process is defined as semiconservative replication
Results in chromosomes that contain 2 DNA molecules called sister chromatids
Which of the following is not true of ribonucleic acid?
contains a hydroxyl group on the 2nd carbon
contains ribose sugar
is double stranded
is produced in the nucleus
contains uracil instead of thymine
DNA and RNA polymerases move in a 3'-5' direction.
True
False
The leading strand is produced continuously, while the lagging strand is produced discontinuously.
True
False
Each unit of a nucleic acid consisting of a sugar, attached phosphate group, and base is
nucleolus
nucleotide
nucleosome
histone
In a nucleic acid, the bases are always attached to the _______________ carbon of the sugar.
5'
4'
3'
2'
1'
During semiconservative replication, the original double helix remains intact and a new double helix forms.
True
False
The elongation of Okazaki fragments during DNA synthesis progresses away from the replication fork.
True
False
If one side of a DNA molecule contains the following sequence of nucleotides, AGTCCG, the complementary sequence on the other side would be:
GCCTGA
AGTCCG
TCAGGC
CTGAAT
During your summer job at Virotech, you isolate a previously unknown virus. Analysis of its genome reveals that it is composed of a double stranded DNA molecule containing 14% T (thymine). Based on this information, what would you predict the %C (cytosine) to be?
14%
28%
36%
72%
