BIOL 101 DNA QUESTIONS AND ANSWERS EXAM LATEST
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The structure of DNA has been described as a twisted ladder. The rungs of this
ladder consist of
Pairs of bases
The two scientists who came up with the structure of DNA were
Watson and Crick
DNA polymerase is responsible for
constructing a new strand during DNA replication
A mutation in which of the following can be passed on to offspring
a germ cell
In DNA replication, which statement about the 2 resulting DNA molecules is
correct?
Each one has one original strand and one new strand
What are the letters that designate the 4 bases present in DNA?
A, C, T, G
If the base sequence on a portion of one strand of DNA is ACCGT what is the
sequence on the opposite strand?
TGGCA
DNA replication occurs before the process of _______ in somatic cells and the
process of ________ in germ cells.
mitosis, meiosis
When do mutations occur?
during DNA replication
At the DNA level, what is the simplest mutation that can occur and how has the
DNA changed?
point mutation, one nucleotide or base (A,G,T or C) is changed to another
How many amino acids would be coded for by the following DNA base sequence?
AAGTCCTGGAAT
4
What is the approximate number of amino acids that are coded for by DNA?
20
Which of the following is the molecule that ferries amino acids to the site of
protein construction?
tRNA
At the cellular level, a gene has instructions for making
a particular protein
If a portion of a gene (DNA) has the base sequence AGGTC, what is the base
sequence for the mRNA made from this DNA segment?
UCCAG, remember RNA uses U instead of T
The process of constructing a strand of mRNA from a gene section of DNA is
called
transcription
The process of taking mRNA and turning it into a protein is called
UPDATE.Buy Quality Materials!
The structure of DNA has been described as a twisted ladder. The rungs of this
ladder consist of
Pairs of bases
The two scientists who came up with the structure of DNA were
Watson and Crick
DNA polymerase is responsible for
constructing a new strand during DNA replication
A mutation in which of the following can be passed on to offspring
a germ cell
In DNA replication, which statement about the 2 resulting DNA molecules is
correct?
Each one has one original strand and one new strand
What are the letters that designate the 4 bases present in DNA?
A, C, T, G
If the base sequence on a portion of one strand of DNA is ACCGT what is the
sequence on the opposite strand?
TGGCA
DNA replication occurs before the process of _______ in somatic cells and the
process of ________ in germ cells.
mitosis, meiosis
When do mutations occur?
during DNA replication
At the DNA level, what is the simplest mutation that can occur and how has the
DNA changed?
point mutation, one nucleotide or base (A,G,T or C) is changed to another
How many amino acids would be coded for by the following DNA base sequence?
AAGTCCTGGAAT
4
What is the approximate number of amino acids that are coded for by DNA?
20
Which of the following is the molecule that ferries amino acids to the site of
protein construction?
tRNA
At the cellular level, a gene has instructions for making
a particular protein
If a portion of a gene (DNA) has the base sequence AGGTC, what is the base
sequence for the mRNA made from this DNA segment?
UCCAG, remember RNA uses U instead of T
The process of constructing a strand of mRNA from a gene section of DNA is
called
transcription
The process of taking mRNA and turning it into a protein is called
