DNA
Warm up:
1. Where is DNA located in your cells?
Itinerary:
1. DNA notes with notes sheet
2. Brain pop video – DNA
3. Exit slip – pay attention – will be
graded!!!
DNA
DNA
means
Deoxyribonucleic
Acid
1. DNA is
Hereditary material that makes
up chromosomes
2. DNA is located
In the nucleus of all your cells
3. DNA is composed of
1. Sugar molecule
2. Phosphate group
3. Nitrogenous base
4. How is DNA held
together?
- By hydrogen bonds between
the bases
5. Label and color the parts of DNA:
6. DNA model “twisted ladder”
1. Sides of ladder are made up
of sugars and phosphate
molecules
2.Sides are connected by
nitrogen bases (steps to the
ladder)
3. Double Helix
7. Here is a 3-D diagram of DNA.
Label the parts:
Rungs
Backbone
Steps of ladder
Sides of Ladder
4 Bases
Sugar and Phosphate
8. The names of the
nitrogenous bases are:
1.
2.
3.
4.
Adenine (A)
Thymine (T)
Guanine (G)
Cytosine (C)
9. DNA Replication
1. Every time a cell divides,
copies of DNA are made
2. DNA Replication – copying of
DNA
10. Fill in the proper base:
• Adenine always pairs with
THYMINE. (A = T)
• Cytosine always pairs with
GUANINE. (C = G)
• Thymine always pairs with
ADENINE. (T = A)
• Guanine always pairs with
CYTOSINE. (G = C)
11. How are you going to
remember this?
I remember C looks like G so
they go together
“AT” goes together - spells the
word AT
Build your own DNA!
• Click on the
picture of the
scientist to go
to a site that
lets you
replicate a
DNA molecule!
12. Who figured out the
structure of DNA?
Rosalind Franklin, James
Watson, and Francis Crick
13. Genes
1. DNA contains genes and
codes for proteins
2. Genes - sections of DNA that
controls specific human
characteristics such as
height and hair color
Genes are
located on
chromosomes
Write a paragraph explaining
what you learned in class, how
this relates to what you have
already learned, and any
questions you have about this
subject. Make sure it is AT
LEAST 5 sentences!!