DNA, RNA, Protein Synthesis Practice

Check out this review link... it should help you to review for the test on Tuesday! Be sure to log in using your name.

http://www.quia.com/quiz/891796.html

DNA Workshop!

Check out the DNA Workshop!  Complete the activity and email me the following:
1.  What color is the backbone of the RNA molecule?
2.  What three amino acids are formed at the end of the protein synthesis activity?

Have Fun!

You Can Clone Something!

Today's class got interesting toward the end, but let's start with the beginning. We turned in Unit Packet pages 7-14. There were there little picture handouts to pick up as you came in. Homework from the weekend was read 12.3. So to make sure we read it, we took a mini quiz reviewing info covered. Next, we labeled the pictures:

A Simple Pic of DNA Replication
<---- 1. Parent DNA 2. H bond breaks, "unzipping" the DNA 3. New DNA strands form with help from DNA polymerase 4. Two new DNA molecules



A More Detailed Pic of DNA Replication
<---- 1. New Strand 2. Replication Fork 3. DNA polymerase 4. Original Strand 5. Nitrogen Bases












A DNA Molecule Up Close ^^^^^

1. Chromosome 2. Nucleosome 3. Coils
4. Supercoils 5. Histones 6. DNA

Then, we took some notes:

DNA replicates during S-phase of interphase
>2 copies needed for mitosis

Results in 2 identical DNA molecules

Semi-conservative replication
>each new molecule contains one old strand and one new strand

The remainder of class was where it got interesting because we talked about...CLONING! We talked about how people are trying to clone a woolly mammoth, animals, and humans and why? We were going to watch a movie about the Human Genome but we didn't have time so we will watch it tomorrow. Mrs. Stein said she only had about 5 cancer papers left to grade and we might get them back tomorrow! FIN

Homework:
>Tribune Article due 11/23
>Read 13.1 with Double Bubble Map "DNA vs. RNA" due tomorrow
>Read 13.1 with Flow Map "Protein Synthesis" due Wednesday

The next scribe will be Andrew

DNA activity - friday 11/12/10

Agenda:

- star & wish/attendence

-DNA demo

-DNA models (UP 11-14)

^ will be collected on monday

HW:

-read 12.3

-UP 9-10

-tribune article (11/23)

On friday in class we did a DNA activity. First Mrs. Stein explained our task and then assigned us new lab groups. She told us that we were going to build a model of DNA and show how replications occurs. First we answered some questions and then started our first activity. A diffferent colored tube represented a different kind of nucleotide. Yellow - Guanine, Orange-Adenine, Green -Thymine, and Blue-Cytosine. A white tube stood for phosphate, a white rod stood for hydrogen bond, and a lack pentagon stood for deoxyribose. We assembeled these together to make a DNA model. Mrs. Stein then came around, and if it was correct she initialed our packet. We then moved on to the second activity which was to show how DNA replicates. The DNA untwists and "unzips" into two halfs between the base pairs. Then new nuceotides are added and there are two identical DNA strands. We then asnwered some more questions and before we knew it, the bell rang and class was over.

The next scribe will be Chloe

"It's In Your DNA!" NEW UNIT!

Today in class we started off by handing in our 12.2 notes. Then we got a current grade report which had our test score on it. After, we took a look at them, Mrs. Stein explained out Tribune Article assignment. It is located in the UP packet pages 3-4. The purpose of the assignment is to pretend we invented the structure of DNA and write a newspaper article on hoe it all happened. After she was done explaining, we started our new unit on DNA. We got into a group of 3-4 people and discussed by writing a paragraph with 7 words. They were nucleotide, nitrogen base, DNA, double-helix, phosphate, structure, and genes. My groups went something like this:

-DNA is genetic material that transfers genes and is in a cell. The structure of DNA strands is a double-helix discovered by Watson and Crick. DNA consists of nucleotides which are adenine, thymine, guanine, and cytosine. They are held together by phosphate groups and nitrogen bars.

We then picked up two pictures that looked like this:
                                    

-Then using those pictures, we went into talking about the basic structure of DNA.

  



Notes we took in class:
     -DNA stands for Deoxyribonucleic Acid.
     -Nucleotides are subunits of DNA.
           *All nucleotides have a:
               -Nitrogen Base
               -Phosphate group
               -Sugar (deoxyribose)

     -Types of Bases:                                      
           *Purines
               -Guanine      
           *Pyrimidines                        
               -Thymine
               -Cytosine

     -Order of Nitrogen Bases: Give instructions for making protein.

     -Base Pairing:
           *A pairs with T
           *G pairs with D
           *Bond using hydrogen bonds
           *Back-bone is made of deoxyribose phosphate.

We finished off class by watching a Bill Nye Video, as a recap of all the things we had just talked about!

Homework:
 -Tribune Article- 11/23
 -UP 7-8- Due: Friday
 -HW Pass- Today was the last day!
 -Read UP 11-14

 The next scribe will be Natalie!