1. Question of the Day
4-19
ADD 2.5 points before dividing!!! Unit 7 Quest grade = ____%
I feel I was successful or unsuccessful
3. I prepared by…
4. Next time I will prepare by…
5. Goal for next time = ____
 If you met your goal + got an A: You may maintain or improve.
 If you did not meet your goal it stays the same.

2. Chapter 10 – DNA, RNA and Protein Synthesis

4. STRUCTURE and FUNCTION of DNA
Structure – double-helix (looks like a spiral staircase)
Function – carries your genetic information

5. DNA is the “genetic code” life
It controls all aspects of the cell. But how?
By the different proteins that it codes for.
Different proteins have different functions
Enzymes – control / speed up chemical reactions
IE: building ATP or digesting food
Repair, transport, structural proteins

6. What is the genetic code?
Set of rules by which information is transferred from…
DNA into  RNA into  Protein (using amino acids)
Even bacteria and viruses have a genetic code

7. What are Nucleic Acids?
A complex macromolecule that stores information in cells in the form of a code. DNA and RNA.
Composed of monomers of nucleotides

9. What is DNA? Deoxyribonucleic acid
Contains the genetic instructions for development / functioning of living things

10. What is a nucleotide? A monomer that consists of three parts
Sugar (deoxyribose or ribose)
Phosphate
Nitrogen Base (A, C, T, G and U)

11. REVIEW: Monomers and Polymers
Define Monomer –
The smallest unit that makes up a larger molecule
Define Polymer
A large molecule formed by many smaller molecules called monomers
amino acids
monomer of proteins =
mondomer of nucleic acids =
nucleotide

12. REVIEW Do all organisms have DNA? What is a Protein?
YES – All living things have a genetic code
What is a Protein?
A large complex polymer composed of amino acids.

13. REVIEW
Peptide Bond –
Covalent bond (sharing electrons) formed between two amino acids (the bonds in proteins)

14. Question of the Day
4-20
1. Structure of DNA =
2. Function of DNA =

15. On a half sheet of scratch paper
4-20
What two types of nucleic acids do you know of?
What are the 3 parts of a nucleotide?
What process makes proteins from RNA?
What is the monomer of a protein?

16. QUICK TALK cell monomer DNA nucleus mitosis eukaryotes
4-20
cell
monomer
DNA
nucleus
mitosis
eukaryotes
phospholipid bilayer
photosynthesis
mitochondria
chromosome
diffusion
ATP

17. DNA SONGS: http://www.youtube.com/watch?v=d1UPf7lXeO8

18. Question of the Day
4-26
What two types of nucleic acids do you know of?
2. What are the 3 parts of a nucleotide?
Use notes if needed

19. What are the Nitrogen Bases?
Adenine
Guanine
Thymine (DNA only)
Cytosine
Uracil (RNA only)

20. Nitrogen Bases

21. Nitrogen Bases

23. Nitrogen Base Pairing How do the nitrogen bases pair in DNA?
A with T
C with G
RNA  A with U (no Thymine)
What holds the nitrogen bases together?
Hydrogen Bonds

24. Why is the nucleotide sequence important?
All organisms have DNA
The closer the DNA resemblance, the more closely related the organisms are

25. DNA REPLICATION DNA Replication – the process of copying DNA
When do we copy our DNA?
S-phase of Interphase

26. DNA REPLICATION STEP ONE:
Helicase – An enzyme that breaks hydrogen bonds between nitrogen bases “unzipping” the DNA

27. DNA REPLICATION
Replication Fork – location where the DNA is splitting apart

28. DNA REPLICATION STEP TWO: DNA POLYMERASE –
An enzyme that bonds free floating nucleotides together to form a new DNA chain

29. DNA REPLICATION How long does this continue? Why do we copy DNA?
Until the entire chain is copied…forming two new chains
Why do we copy DNA?
So that new cells have the genetic material needed to survive

30. Question of the Day
4-27
RNA and DNA are both examples of ____________  you should be able to answer even if absent yesterday!!!
The enzyme that separates or “unzips” DNA =
Use notes if needed

31. Review DNA

32. REVIEW
Replication fork

33. REVIEW
Peptide Bond –
Bond formed between two amino acids (in a protein)
What holds nitrogenous bases together?
– hydrogen bonds

34. REVIEW True or False? The process of copying DNA = … – DNA replication
The closer the DNA resemblance, the more closely related the organisms are
The process of copying DNA = …
– DNA replication

35. REVIEW
Helicase –
An enzyme that breaks hydrogen bonds between nitrogen bases “unzipping” the DNA

36. REVIEW
Replication Fork –
location where the DNA is splitting apart

37. REVIEW DNA POLYMERASE –
An enzyme that bonds free floating nucleotides together to form a new DNA chain

38. Assignment 4-18 Front of handout – due end of period today
READ pages (my.hrw.com) AND complete #s 1-2, 4-8 on the bottom of page 202 – due beginning of class tomorrow
My.hrw.com
Chapter 10 section 3
Username = dhe5n
Password = p5e8n