Current Event: Clash of the Crayfish

"Clash of the Crayfish: Why the Americans Are Winning." ScienceDaily. ScienceDaily, 15 Mar. 2012. Web. 16 Mar. 2012. .

I read about the problem that exists in Yorkshire, there crayfish are slowly being extinct since there is an invader, the American crayfish. Yorkshire is one of the last places were white-clawed crayfish live and now that's also endagered. Since there are new crayfish living with them(the american crayfish) which are much more resistant and which spread the porcelain disease. The local crayfish suffer from this disease since they're not as resistant. From the disease they slowly loose there appetiet and die a couple years later. The white-clawed crayfish are also much more picky about there food, then there American counterparts. The American crayfish is more aggresive than the local one. Scientists are studying the fish and still cannot figure out why the American one is more succesful one then the british one.

I found this article on the science daily site. I chose it since the title the clash of the crayfish was really intriguing and just that was enough to make me want to read this source since the title couldn't have sounded a lot more interesting. I think the science daily site is a trustworthy one since I use it for most of my current events. They always realese new articles and videos on almost all science topics.

I found this article really interesting, since it talked about an endagered specie and how all most the same animal from a different part of the world is more resistant and is expanding it's community while the other one is slowly dying out. This article made me think of how entire species of animals can die out and how people must do more to help them since it is within our power to help other animals.

Mitosis Questions

Part 1: Can you find dividing cells in the onion root tip?

Yes you can find dividing cell in a onion root tip. The best place for finding dividing cells in an onion root tip, is at the tip of the onion. This is because the tip of the onion root always grows and reproudces itself and repairs itself. Cells at the tip always reproduce
What differences can you see when you compare the nucleus of a dividing cell with that of a
non-dividing cell?

The dividing cell can be defined because you can see there is movement of parts of the cell.
The cell is undergoing the procces of mitosis were it separates. When you observe non-dividing cells nothing happens, while in a dividing cell the cell moves and parts get's ready for dividing reproducing and reparing.

Part 4: See what differences you can detect between the division of an animal cell and a plant cell.

The difference between the division of and animal and a plant cell are a bit different. Except the chromosomes in a animal cell undergo different phases of mitosis then plant cells. Animal cells seem to have a shorter mitosis procces than plants do. In the video I watched as soon as they finished the metaphase the animal cells split.

Mitosis Cells

Introduction: Find out the difference between Cytokinesis and Mitosis. How do they go together in order to complete the cell division process?

Part 1: Can you find dividing cells in the onion root tip?

Yes, you can find the dividing cells by finding were the most concentrated cells are, that's the easiest way to decide were the cells are. Dividing cells are in the most concentrated areas since some of them have been divided.

What differences can you see when you compare the nucleus of a dividing cell with that of a
non-dividing cell?

The difference between the nucleus of a dividing cell and a non-dviding cell, is that the dividing cell is going through the proccess of mitosis, the dividing cells can be through be different steps of mitosis. But the nucleus of a dividing cell is moving through the inside and in 24 hours it divide.

First Activity

In the first activity we learned what each procces of mitosis was like and what is each part of mitosis. We learned how many cells each cells contained. We also learned how much each of the stages/phases lasts. We also learned some facts about each phase of mitosis.

Second Activity

Through the second activity we got to see how the onion tip actually looks like and we got to see what divding cells look like when there being divided.

Make the Right Call lab

Analasis

1. For the first trial, when you crossed the B's and b's the result is always the same you get Bb. When you look at the punnet square all of the results are also Bb, which means the punnet square is correct and the results are always the same.

2. For the second trials when one bag contained one big B and small b, and the other bag was only big B's. In this experiment we had seven Bb's and three BB's, This was affected by chance. The punnet square predicts 50% for each.

3. During this third trial there were three different outcomes, one being Bb, the second bb, and the third BB. The punnet square predicted that we are going to have 50% Bb, 25% bb and 25 % of BB. Unlike the punnet square we got the most bb's, 6 out of the ten trials we did.

4. If you had more trials and instead of 10, 100 I would think this would be a more succesful experiment, since when you have a little trials, luck can take it's part but in a lot more, forecasted statistics are more likely to happen in a real life example.

5. The model compares whith a punnet square in a way that thre is the same chance and probability you will pull out a certain marble, but in a punnet square you have excatly a certain probabilty, while in the model even the less likely one might occur more times due to chance and luck.

Gattaca

16. Limits should be placed on genetic engineering, people can easily manipulate this and use it for there good. Genetic enineerging should not be allowed at all since it can corrupt this world and cause a lot of chaos powerful people can easily start enginnering whoever they want. It should be alowed to get rid of serious diseases but only with the goverments approval since without these diseases the world might become overcrowded.

17. Cloning should be forbidden all together since, people with more and money can soon replace whoever they want, and illegally start controlling entire countries through human cloning. Cloning of animals in order to make food should be permitted but of peope, no. If someone cannot have a child they need to find a different solution since if this is under the wrong hands it can turn into chaos.

13. The predicting of a persons health in the future should be stopped since this information can cause a lot of problems in that persons life, knowing what disease you have beforehand isn't pleasant. Maybe doctors should be the only ones to view this and if there is a cure they should only then inform the person in order to help them otherwise, people might even kill themselves if there is no cure to there particular disease.

Cracking the code of life

Most of the ideas in this movie were new to me, I didn't know that genes and DNA Could tell us so much about us, and that there were so many diseases that were and are caused due to genes and our DNA. The reaction that was sparked after watching this was suprise, I was so suprised how amazing DNA is. Something Scary were the genetic diseases that can only be caused by 4 atoms. I learned how you can tell almost everything about us and our lives from our DNA, I learned that other beings such as fruit flies aren't so much genologically different than us even though we look more complex.

If I could find out if I have a certain diseases and no cure was available, I would not take the test, since you would live the rest of your life knowing that you have this gene diseases and there is no way you can stop it.

If reasearchers had a chance to take my DNA and maybe figure out a cure for a certain disease, I would give them my DNA since you can help save a lot of lives and change the world for the better. Most probably I would want royalties since, you gave a little part of yourself to a different person in order to find a cure, part of the credit goes to you since without you they would have been able to find this cure. If they discovered a gene that might result in a health problem and it is curable I would like to be informed since you can prevent it, but if it's not curable then no, since you would constantly live in fear.

If more is learned there is a risk of genetic discrimination, because of ones gene make up, like today there is discrimination for many things, but you could limit this by controlling who and where you can acecces the genetic makeup of a human being, only authroized scientists can be able to see this.

Guiding Question: How does the concentration affect the darkness of the color of an acid and base?

Hypothesis: I think that the most concentrated one is the darkest one in both the acids and bases
Variables
Controlled: The five drops we add of the indicator to the acids and bases
Manipulated:The concentration of the acids of the acids and bases
Materials
-safety goggles
-notebook
-Windex
-lime

Procedure
1. add 1 drop of lime then 2 drops 3 drops 7 drops and 20 drops to each small test tube
2. Add 5 drops to each of the test tubes
3. record your observations
4. repeat for the base(windex)

Data analysis Observations:

Acid (lime): The one with the most drops of the acid is the most concentrated after the water is added. The most concentrated one becomes the darkest color after the experiment.

Base (Windex): The one with the most drops of the base added to it is again the most concentrated one, even when the water is added to it. Unlike the acid where the most concentrated one is the darkest here the most concentrated one is the lightest one.

VI. Concept Acquisition (CONCLUSION):

(Marko) Our guiding question ask what is the color of the most concentrated acid and base. I predicted that the most one concentrated is the darkest color. This prediction was only half right, the most concentrated acid is the darkest color of all the acid with water added to it, but bases are different. The most concentrated base is the lightest color, which is interesting, this shows us that bases and acids are different and how there Ph’s are different.

VII. Concept Application (FURTHER INQUIRY):

Marko: Are data is pretty reliable and truth worthy, because we measured the amount of drops we added to each of the test tubes. For next time we could try with more acids and bases to verify, and be sure that acids are darker and bases lighter.