Site: http://www.pbs.org/wgbh/harvest/
Should we Grow GM Crops?
Instructions: Read the page and click YES or NO, reach the next...click YES or NO...etc until you’ve read all the arguments -- You will need to do this 12 times in order for your votes to be tallied. Navigate the site, each of the bold headings below are links within the site
1. What is a GM Crop.
It is a genetically modified crop.
2. List 2 arguments FOR the growing of GM crops
Less pesticides . Scientists say that Genetically modifying foods couldn't be more natural.
3. List 2 arguments AGAINST the growing of GM crops.
It is unnatural.
*Read some of the reader’s responses.
Engineer a Crop
4. Practice this simulation until you get the largest ears of corn. How many times did it take you?
What’s for Dinner?
*Click on the foods on the table to see what research is being done to bioenginner the foods.
5. List two foods and desribe how they are being modified.
Viewpoints
*Read the article titled “Are GM Food Sufficiently Regulated in the US?”
Do you think food should be labeled if it has been genetically modified? Why or Why not?
Yes, because some people might be against it or might be allergic to the chemicals.
Finished? Go to www.yahooligans.com and type "genetic engineering" in the search field. Browse some of the sites that pop up.
(Yahooligans is better than yahoo, the sites tend to be picked for education rather than for scientists and universities, you'll find more understandable and interesting sites on yahooligans than you will with Yahoo)
Write down any of the sites you visited below.
Friday, December 17, 2010
Wednesday, November 24, 2010
Fingerprinting DNA
Fingerprinting DNA
Intro
DNA is unique for everyone. The only exception is if a person has what?
The only exception is if you have and identical twin.
What are DNA fingerprints used for?
It can be used from anything to finding a biological mother or a biological father to help find a suspect of a crime.
It Takes a Lickin’
What “crime” was committed?
Somebody licked Jimmy Sweets holographic NOVA lollipop.
What bodily fluid was removed from the “crime scene” to get DNA?
The bodily fluid that was found saliva because you can lick a lollipop without leaving a bit of saliva.
“DNA Fingerprinting at the NOVA Lab”
What does a restriction enzyme do?
They cut the DNA molecules at different locations like scissors.
What is agarose gel?
Agarose gel is a thick, porous, jello-like substance. It acts as a molecular strainer, allowing smaller pieces of DNA to move through more easily than larger pieces.
What is electrophoresis?
The process of moving molecules with an electric current.
Smaller fragments of DNA move ____________ than longer strands?
Easier
Why do you need to place a nylon membrane over the gel?
The agarose gel is difficult to work with.
Probes attach themselves to __________.
DNA Fragments on the nylon membrane.
Which chemical in your “virtual lab” is radioactive?
The probes are radioactive
Sketch your DNA fingerprint.
It looks like a barcode from a store.
Based on your DNA fingerprint, who licked the lollipop?
Honey
What kinds of things could you do at the DNA workshop?
You can synthesize proteins and replicate DNA.
Read an article about genetics at this site that you might find interesting, or use the "Search" box in the upper right hand corner to search for DNA fingerprinting.
Title of Article ____________________________ Author and Date ______________________________________
Summarize what the article was about. Write this in a paragraph format.
Intro
DNA is unique for everyone. The only exception is if a person has what?
The only exception is if you have and identical twin.
What are DNA fingerprints used for?
It can be used from anything to finding a biological mother or a biological father to help find a suspect of a crime.
It Takes a Lickin’
What “crime” was committed?
Somebody licked Jimmy Sweets holographic NOVA lollipop.
What bodily fluid was removed from the “crime scene” to get DNA?
The bodily fluid that was found saliva because you can lick a lollipop without leaving a bit of saliva.
“DNA Fingerprinting at the NOVA Lab”
What does a restriction enzyme do?
They cut the DNA molecules at different locations like scissors.
What is agarose gel?
Agarose gel is a thick, porous, jello-like substance. It acts as a molecular strainer, allowing smaller pieces of DNA to move through more easily than larger pieces.
What is electrophoresis?
The process of moving molecules with an electric current.
Smaller fragments of DNA move ____________ than longer strands?
Easier
Why do you need to place a nylon membrane over the gel?
The agarose gel is difficult to work with.
Probes attach themselves to __________.
DNA Fragments on the nylon membrane.
Which chemical in your “virtual lab” is radioactive?
The probes are radioactive
Sketch your DNA fingerprint.
It looks like a barcode from a store.
Based on your DNA fingerprint, who licked the lollipop?
Honey
What kinds of things could you do at the DNA workshop?
You can synthesize proteins and replicate DNA.
Read an article about genetics at this site that you might find interesting, or use the "Search" box in the upper right hand corner to search for DNA fingerprinting.
Title of Article ____________________________ Author and Date ______________________________________
Summarize what the article was about. Write this in a paragraph format.