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WorksheetsDNA mRNA Review
Total questions: 43
Worksheet time: 30mins
Nitrogen bases make up what, on a strand of DNA?
The deoxyribose sugar
The phosphate
The rungs of the ladder
The two outside portions of the ladder
Guanine, cytosine, adenine, and thymine are
sides of the ladder in DNA
phosphate molecules
nitrogen bases
Strands of tightly wound DNA are known as _______.
Phosphates
Nucleotides
Chromosomes
Sugars
Cystosine is always paired with ______________.
Adenine
Thymine
Guanine
It doesn't match with anything
Which is NOT a nitrogen base found in DNA?
Adenine
Thymine
Guanine
Uracil
What breaks the bond between nitrogen bases during DNA REPLICATION?
Cytoplasm
Hormone
RNA
Enzyme
How would you describe the physical appearance of a DNA molecule?
Double helix
Triple helix
Long, thin rod
Straight ladder
How do the nitrogen bases pair up during DNA REPLICATION?
Guanine-Cytosine and Adenine-Uracil
Guanine-Cytosine and Adenine-Thymine
Guanine-Adenine and Cytosine-Thymine
Guanine-Adenine and Cytosine-Uracil
What breaks the bond between nitrogen bases during DNA REPLICATION?
Cytoplasm
Hormone
RNA
Enzyme
DNA REPLICATION occurs...
during prophase
during cytokinesis
during metaphase
during interphase
What is the complementary pair for the DNA code:
C-T-A-T-G-G
G-A-T-A-C-C
C-T-A-T-G-G
A-T-G-A-T-G
G-T-A-C-T-C
Deoxyribose sugar and phosphate make up what part of a DNA molecule?
Guanine and Adenine
The sides of the ladder
The rungs of the ladder
Nitrate and Ribose
DNA is located where?
on the ribosomes
floating in the cytoplasm
outside the cell
Inside the nucleus, on chromosomes
Define a gene.
a section of DNA that codes for a trait
what a ribosome makes
a fashion statement that you can buy at the mall
the nuclear membrane pore
Ribose sugar is part of...
Thymine
DNA
RNA
Adenine
The smaller pieces of DNA (consist of 3 parts) are called?
phosphates
amino acids
nucleotides
bases
How does a DNA molecule differ from the parent molecule, after DNA replication?
it is half the old strand, and half a brand new strand
it's pink instead of yellow
it's longer
it has 6 nitrogen bases instead of 4
When a nitrogen base is copied incorrectly during DNA replication, what happens?
Nothing
Creates a positive mutation
Causes a negative mutation
All of the above
Translate the mRNA molecule for this gene:
C-A-T-G-T-A-A-A-C
T-C-G-A-T-U-U-C-C
G-G-G-A-T-C-U-U-T
G-U-A-C-A-U-U-U-G
G-T-A-C-A-T-T-T-G
What do ribosomes do for the cell?
Make proteins for the cell
Package and deliver items in the cell
Produce energy for the cell
Controls what exits/enters the cell
What is made of a phosphate, a deoxyribose sugar, and a nitrogen base?
ribosomes
a trait
a nucleotide
a nuclear membrane pore
What is the difference between mRNA and DNA?
DNA is a double helix, mRNA is a single strand
DNA has deoxyribose sugar, and mRNA has ribose sugar
DNA uses Thymine, and mRNA uses Uracil
All of the above
Match the nucleotide with its complementary nucleotide. (DNA to DNA).
Adenine -
Thymine
Guanine
Cytosine
In replication, C pairs with
U
G
A
T
If a strand of DNA had bases in the following order - ATCCGTC, what would be the transcribed mRNA sequence?
TAGGCAG
UAGGCAG
TUGGCUG
None of the above are correct
AATCATGGA
Which RNA bases would pair with CCG TAA in transcription?
AUG CUU
GGC AUU
GCU ACC
GCA ATT
Match the nucleotide with its complementary nucleotide. (DNA to DNA).
Adenine -
Thymine
Guanine
Cytosine
