DNA and RNA Structure
Adenine Pairs with ?
Thymine
Which enzyme opens up the DNA strand
DNA helicase
The process of transcription turns DNA into
a chain of amino acids used to make proteins
This type of RNA is responsible for delivering the amino acid
tRNA
The backbone of DNA is made up of
sugar and phosphates
The short segments of DNA on the lagging strand are called
okazaki fragments
A section of DNA is coded AAC. What is the complementary mRNA code?
UUG
1) An mRNA sequence is formed from the complementary DNA strand
2) A ribosome attaches to the mRNA sequence
3) RNA polymerase attaches to the promoter region of DNA
4) A long chain of amino acids is formed
3124
Name two structural differences between DNA and RNA
RNA is single stranded, RNA has uracil instead of thyamine, RNA does not have a deoxyribose
During replication this strand is used to build DNA continuously ad moves towards the replication fork
The leading strand
During transcription RNA polymerase initially binds to a region called the
promoter
5' AUGCCCUCU 3'
Met - Pro - Ser
What direction is DNA synthesized
5' to 3'
The mRNA complementary base pair for adenine is...
uracil
What is the role of DNA ligase
attaches the okazaki fragments together
The DNA strand used during transcription is called ______ strand
template
The tRNA anticodon for methionine is
UAC
What amino acid will the DNA sequence GGA form?
proline
In a DNA sample, 20% is guanine. What percent is adenine
30%
These are placed down on the DNA strand telling DNA polymerase where to build new DNA. Hint: many of these are used on the lagging strand
RNA primers
This enzyme responsible for transcribing DNA is called
RNA polymerase
What happens during the initiation stage of translation
A ribosome binds to the binds to the mRNA strand
The tRNA anticodon for TRP is?
ACC