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Biology DNA

Terms in this set (60)

Four Nitrogen Bases
Adonine, Guanine, Cytosine and Thymine
Cytosine forms a hydrogen bond with?
Guanine
Adonine forms a hydrogen bond with?
Thymine
What is DNA's job?
To carry the genetic information of an organism
What is replication?
The production of a new copy of an organism's genetic information which is passed on to a new cell
What is a double helix?
The double coiled shape of DNA
What are the two Nucleic Acids?
DNA and RNA
Define Nucleotides?
building units composed of DNA. Consists of the four base groups, a deoxyribose sugar and a phosphate group
Define Deoxyribose?
A five carbon sugar
Define Phosphate Group?
A group composed of one phosphorus atom surrounded by four oxygen atoms
Define Nitrogenous Base?
A carbon ring structure that contains one or more atoms of nitrogen
List the steps of copying DNA?
1) separation of the strands
2) base pairing
3) bonding of the bases
4) results of replication
Why is the structure of a DNA molecule described as a zipper?
Because like a zipper being held together by the teeth, the two chains of nucleotides are held together by nitrogenous bases
What does DNA stand for?
Deoxyribonucleic Acid
Who was Johann Miescher?
A Swiss physician who identified DNA; thought it was a simple molecule containing only four parts
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