DNA Structure
DNA is composed of _________ strands
2
The enzyme lays downs RNA primers on the DNA strand
Primase
Where is DNA found in a prokaryotic cell?
Cytoplasm
During DNA replication, the original strands are referred to as:
Parent or template strands.
What are the three main parts of a nucleotide?
Phosphate group, nitrogenous base and sugar.
What type of macromolecule is DNA?
Nucleic Acid
This enzyme prevents supercoiling of the DNA strand.
Topoisomerase
Which enzyme is responsible for sealing up the strands of DNA after replication?
DNA Ligase
What kind of bond holds two strands of DNA together(nucleotide base pairs)?
Hydrogen.
A-T
C-G
What are the three types of RNA?
mRNA, tRNA, rRNA
Compared to the direction the replication fork is moving, which direction is the leading strand being made in?
5' to 3'
What is the complementary DNA sequence of CGG ATG
GCC TAC
If a strand of DNA is 20 percent thymine, what are the percent's of the other 3 bases?
A-20
C-30
G-30
True or False: DNA is more stable than RNA.
Which type of RNA is responsible for copying the genetic information from a gene on DNA and bringing it to the ribosome?
What is mRNA
Each new double helix produced by DNA replication contains a parent (template) strand and a new strand. Because of this, DNA replication is considered:
Semiconservative.
What are the two jobs of DNA polymerase?
Add nucleotides
Proofread