DNA Worksheet
Mr. Brinkman Name_____________________
Period_____
1 DNA stands for __________________________________________.
2 DNA is located in the _______________ of the cell, and makes up the
_________________ found there. DNA is often called the
_____________________ of an organism as it controls the development of the organism much like this does for the design and construction of a building.
3 RNA stands for ________________________________________________.
RNA moves genetic information from _____ in the nucleus, to the cytoplasm of the cell and is involved in many cellular activities like the building of
______________.
4 DNA and RNA are both called ________________ ________________.
5 RNA contains a 5 Carbon sugar called _____________________________.
6 The single stranded nucleic acid is _____.
7 The double stranded nucleic acid is_____.
8 A DNA molecule is made up of long chains of nucleotides. A DNA nucleotide consists of a ____________, a ______________, and a nitrogenous base.
9 In DNA, the four bases are _____________, _____________, ______________, and _____________. These bases are called complimentary bases as Adenine
(A) bonds only with ___________( ) and Guanine (G) bonds only with
__________( ).
10 The double-stranded DNA structure is called a ___________ _____________.

11 The sides of the DNA “ladder” are made up of ______________ and
_______________.
12 The rungs of the DNA “ladder” are made up of the
______________________________.
13 An RNA molecule is made up of long chains of nucleotides. An RNA nucleotide consists of a _______________, a _______________, and a nitrogenous base.
14 In RNA, the bases are _____________( ), _____________( ),
______________( ) and _____________( ). These bases are called complimentary bases as Adenine bonds only with _____________( ) and
Guanine bonds only with _____________( ).
15 The process by which DNA makes a copy of itself is ______________. This process occurs during the ___________________ of the cell cycle. The DNA
__________ ___________ unwinds, breaks apart at the ______________ exposing two chains (strands) of nucleotides. These chains are the sides of the original DNA molecule. Nucleotides with complimentary ________________ bond to the exposed strands, forming two double-sided DNA ladders, each containing on of the original _____ strands.
I. Please draw a DNA fork of 3 – 4 split rungs. Draw two nucleotides and indicate where they would fit on either exposed strand. Again, be sure to label all the
molecules!