1. HW: IP: DNA Wednesday March 8, 2017 I can: Agenda (10) Catalyst
describe the structure of DNA as it relates to its function
Agenda
(10) Catalyst
(20) Data Tracking
(20) GN: Structure of DNA
(20) Have Your DNA and Eat It Too
(10) IP: DNA
(5) Exit Ticket
Catalyst
Where is DNA located in a eukaryotic cell?
What are the monomers of DNA?
What does the nucleus do?
What is the cell membrane made up of?
What is the outermost layer of plant cells?
HW: IP: DNA

2. HW: IP: DNA Wednesday March 8, 2017 I can: Agenda (10) Catalyst
describe the structure of DNA as it relates to its function
Agenda
(10) Catalyst
(20) GN: Structure of DNA
(10) DNA Extraction Demo
(25) Have Your DNA and Eat It Too
(20) IP: DNA
(5) Exit Ticket
Catalyst
Where is DNA located in a eukaryotic cell?
What are the monomers of DNA?
What does the nucleus do?
What is the cell membrane made up of?
What is the outermost layer of plant cells?
HW: IP: DNA

5. What properties of DNA allows it to do so?
DNA has to be able to:
Store hereditary information in some sort of code.
Be easily and accurately copied, as a copy is passed on every time a cell divides.
What properties of DNA allows it to do so?

6. The unique structure of DNA allows it to be the hereditary molecule and allows it to store instructions for directing cell activities.

7. DNA
DNA stands for deoxyribonucleic acid. It is a long molecule made up of monomers called nucleotides.
Each nucleotide is made of 3 parts:
a 5-carbon sugar
a phosphate group
a nitrogenous base

8. DNA Structure
The structure of DNA is often described as a double helix, or twisted ladder.

9. a single nucleotide
The backbone of DNA is formed by alternating sugar and phosphates held together by a strong bond.
The rungs of the ladder are formed by the four nitrogen bases and are held together by weak hydrogen bonds.

10. Think Box 1:
What does DNA look like?
What forms the “backbone” of DNA?
Where are the weak bonds in DNA?
Where are the strong bonds in DNA?
Why do you think DNA is important?

11. The order of these bases determines the genetic code.
Nitrogenous Bases
DNA contains four nitrogenous bases:
adenine (A)
thymine (T)
cytosine (C)
guanine (G)
The order of these bases determines the genetic code.

12. Base-Pairing Rules
The bases of DNA pair with each other in a predictable way.
A always pairs with T
C always pairs with G
DNA is said to be complementary – each strand can be used as a template for the other half using the base-pairing rules.

13. T A C G A T T G A A T G C T A A C T Guided Practice
One strand of DNA has the base sequence
T A C G A T T G A
What is the complementary strand of DNA?
A T G C T A A C T

14. A A C T G C C T A T T G A C G G A T Guided Practice
What is the DNA sequence complementary to the one shown below?
A A C T G C C T A
T T G A C G G A T

15. Think Box 2:
What determines the message that DNA contains?
What do the base-pairing rules of DNA say? What always bonds with each other?
If one half of DNA reads ATCGATC, what will be the order of letters in the other strand?