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biology- DNA structure and function reading
Terms in this set (26)
DNA is a _____.
DNA stands for ________________.
deoxyribose nucleic acid
DNA is made of_______.
Each nucleotide is made of________,________,and ________
sugar, phosphate, nitrogen base
the four nitrogen bases are ____________,____________,____________, and _____________.
adenine, thymine, guanine, cytosine
Adenine pairs with__________and guanine pairs with __________.
single ring structure
pyrimidines (cytosine, thymine)
double ring structure
purines (adenine, guanine)
DNA is shaped like a __________.
the two molecules that make up the sides of the ladder or the side portion of a DNA molecule are __________ and __________.
the molecules that meet across the middle, forming the steps from the "ladder" are known as _____________.
nitrogen bases are held together by __________.
weak hydrogen bonds
the sugar found in DNA is ______________.
Where does DNA replication occur?
during which phase in the cell cycle does replication occur?
what molecule has the ability to speed up reactions or build up or break down substances?
Which enzyme unzips DNA?
which enzyme replicates DNA molecules build a new strand of DNA?
which enzyme makes primer so that polymerase knows where to start working?
which enzyme "glues" DNA back togther?
what binds the DNA strands to keep them seperated?
in which direction does polymerase build a new strand of DNA?
5' to 3'
what is the name of the fragments created on the lagging strand?
what enzyme has proof reading abilities?
what is the primary function of DNA?
To hold all genetic material that determines which proteins are made
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