DNA Structure
In DNA, C always bonds with _____.
G
When and where does DNA replication occur?
Interphase (S Phase)
In the nucleus (or origin of replication)
Which molecule includes ribose?
RNA
The 3 parts of a nucleotide.
What is phosphate, sugar, base.
The site of protein synthesis.
What is the ribosome?
What is the name for the building blocks of DNA (it contains three molecules).
What is nucleotide? (made up of sugar, phosphate, and base)
Describe the roles of helicase, ligase, and DNA polymerase
helicase: unzipper
DNA polymerase: builds new DNA strands
ligase: glues fragments together
Which molecule is single stranded?
RNA
A collection of DNA that is 32% Cytosine (C) will have this much Guanine (G).
What is 32%?
Which molecule has an anticodon?
tRNA
Double helix
During DNA replication, the complementary DNA strand for ACGTCC would be:
What is TGCAGG?
What are the bases in RNA?
C, G, A, U
Why is DNA replication "semiconservative"?
Some of the original DNA molecule is saved in the new molecule. (some is conserved)
Why does transcription happen in the nucleus?
Must protect master copy of genetic info (DNA). It cannot leave the protection of the nucleus.
What is phosphate and sugar (deoxyribose)?
What direction is the lagging strand built?
5' --> 3'
(leading strand is also built in this direction)
If the DNA sequence is GCAATC, what is the mRNA sequence?
mRNA: CGUUAG?
As a group, perform the DNA song and dance at the front of the room.
:D :D :D
Translate the following mRNA sequence into a protein:
A U A G G A C G U U A A G C A U C A
protein: Ile - Gly - Arg - STOP!
What are the 2 types of bonds in DNA molecules and where are they?
hydrogen bonds between base pairs
chemical bonds in sugar phosphate backbone
On the board, draw a replication fork. Include template strands, new strands, and directionality of ALL strands
hopefully its right!
The location that mRNA goes to with its copy of the DNA message
Where is the ribosome?
A sample of DNA has 28% Cytosine (C) so it will have this amount of Adenine (A).
What is 22%?
Transcribe and translate the following DNA sequence
A T G A G T C A T G A G
protein: Tyr - Ser - Val - Leu