Why does DNA replicate?
They need cells before diving
Is DNA replication described as conservative or semi-conservative? Why?
Semi-conservative
Each new strand is made of an old and new strand
What 2 enzymes are used during DNA replication
Helixase and Polymerase
What does each enzyme do?
Unwinds and separates
When does DNA replication occur in the cell?
Cell division
Where does DNA replication occur in the cell?
Cell nucleus
Cytosine, Guanine, Thymine and Adenine are referred to as phosphates
False. They're referred to as bases
The DNA is in the shape of helix
True
A nucleotide is made up of a sugar, phosphate, and two nitrogen bonds
False. It's only made up of sugar, phosphate, and ONE nitrogen base
Replication is performed prior to cell division
True.
Adenine always pair with Guanine
False. It always pairs with Thymine
Complementary base pairing matches up complementary sugars
False.
The sides of the DNA molecule are made up of repeating nitrogen bases and sugars
False. It's made up of nitrogen bases and phosphate
The letters that make up the DNA molecule code for genes
True.
Replication results in two strand of DNA, each of which has half of the original strand
True.
Covalent bonds hold nitrogen bases together, forming the rights of the DNA ladder
False. Hydrogen hold nitrogen bases together, forming the rights of the DNA ladder
Steps of the DNA replication
...
1)
Helicase begins to break the hydrogen bonds between nitrogen bases
2)
DNA polymerase attach the free-floating nucleotides to the exposed nitrogen bases
3)
Free floating nucleotides pair up with exposed nitrogen bases
4)
Two new molecules of DNA are created
5)
Cells start into the mitosis phase of the cell
Which enzyme unwinds or unzips the parent strand?
Helixase
What enzyme connects the new bases to the old bases in the DNA template?
Polymerase
What enzyme connects the new nucleotides together and proofreads them?
Polymerase