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Homework Post #1

Anton van Leeuwenhoek
Inventor of the microscope or over acredited scientist?

An article I read recently for this wiki post writes about how Anton van Leeuwenhoek, the scientist who is given the credit for making the first microscope, was a very unlikely scientist. He didn't have any university education o
external image tool_1_leuw-scope.jpg
external image tool_1_leuw-scope.jpg
r otherwise. All he had taken was his childhood schooling but because he was such a curious fellow he ended up making various types of microscopes. Although, he was not the first person to make a microscope because years before he was born was the first time anyone had seen cells. Cells can not be seen with the naked eye and therefore was seen through a microscope by a man named Robert Hooke. The reason people give Anton van Leeuwenhoek credit for the invention of the microscope is because his microscopes could magnify by 200X whereas Robert Hooke's could only by 20X or 30X. I personally would give credit to Robert Hooke because he technically did build the first microscope even if it was not very strong. However Leeuwenhoek did contribute a lot to the field of science by making more powerful microscopes and doctumenting what he saw for the world to know.



Citation:
Ford, B. J. 1991 The Leeuwenhoek Legacy. Biopress, Bristol, and Farrand Press, London. <http://www.ucmp.berkeley.edu/history/leeuwenhoek.html>

Homework Post #2

What is Apoptosis?
Apoptosis.gif
Apoptosis.gif

To sum it up, apoptosis is cell suicide. It is when cells die because they are programmed to. Putting it simply, enzymes breakdown the key parts of the cell from the inside and the cell shrinks. Then when chromatin in the nucleus breaksdown, the nucleus get smaller making a shape like s horseshoe. The cell shrinks even more and then phagocytic cell are in charge of getting rid of the dead cells parts. Although there are different ways that they cell can get the command to start Apoptosis, the result is the same. For example, if a cell was diseased a killer T cell would be the comand that makes the diseased cell start Apoptosis.

Citation:
Dash, P. (n.d.). Apoptosis. Retrieved from http://www.sgul.ac.uk/depts/immunology/~dash/apoptosis/
Picture retrieved from http://www.microbiologybytes.com/virology/kalmakoff/baculo/baculohostinteract.html

Personal Post #1

How do Potatoes Turn Green?
potato.jpg
potato.jpg

While making my lovely cell Bible I happened apon some information that I thought to be very interesting. It was during the prosses of trying to find something for my 'Other' catagory of Leucoplast that I happened apon a book on goole saying why potatoes turn green. Leucoplast is a pigment, found in plants like potatoes, that give the plant it's white color. Leucoplast store mainly starch but some other things as well. When a potato is growing it should be totally covered by soil but when part of it is not, chlorophyll forms in the leucoplast and therefore turns that part of the plant green. I thought that was really cool how a plant can addapt to things like that. Now on the top of weither or not green potatoes are poisinous, the book didn't say. But when ever I happen apon a green potato chip or two, I first think of Author and then gobble it down.

Citation:
Hooker, W. J. (1981). Compendium of potato diseases. Retrieved from here

Personal Post #2

Organs Growing in Labs?
Organs can now be 'grown' in labs by taking away all the cells of the organ but keeping the proteins. The proteins are like a mold for the cells so that they can just attach to the proteins and become the exact heart, lung, or whatever else that is needed. They need to have the proteins because without them, the cells wouldn't be able to make all the complicated sections of each organ. But where do they get the organs to strip of their cells and then add mine, you may ask. The first lab grown heard was a rat heart, obviously too small for a human. They could use deseased human hearts but they are talking about using pig organs because they are the same size and complexticy. This is a really interesting topic and to get a better understanding of it I would recommend watching the movie I have put up. (Even if it is really long!)


Citation:
Holt, S. (Writer). (2011). Artificial organ regrowth [Web]. Available from http://www.youtube.com/watch?v=lAI5rLnnCBE


Personal Post #3

The Wandering Albatrosswandering-albatross.jpg
My brother was watching Daily Planet today while I was in the living room avoiding homework and they mentionedbird called the wandering albatross. They said that it had the longest wingspan of any bird and I thought that was pretty interesting so I decided to do some more research on it. As you may have guess, the wandering albatross or Diomedea exulans spends a lot of time in the air. It is an absolutely beautiful sea bird and because it's wingspan can measure up to 11 feet long, it is enabled to glide much more efficiently than other birds and in turn it can stay in the air for months at a time. It eats things like octopus, squid, crustaceans and other fish so it's beak has a unique shape to allow it to scoop these things out of the ocean.Gibson's%20Wandering%20Albatross,%20New%20Zealand.jpg


Citation:
Klappenbach, L. (2011). Wandering albatross - diomedea exulans. Retrieved from http://animals.about.com/cs/birds/p/albatross.html

Personal Post #4

One Cool Fish!
So as I was looking for something to do my post on my brother told me about a see-through fish so I YouTubed it and came across a different fish called the Pacific barreleye fish. I thought it was so cool because it has a transparent dome over its eyes to protect them and its eye actually face upwards instead of straight. It can however rotate its eyes to look forward so that it can see other places. At first glance it looks like it had two pairs of eyes because its nostrels are in the same place as eyes would normally go. Scientist think that the barreleye's eyes are protected by its dome because it steals food from things like Jellyfish by swimming up to its tenticles and taking the food they have just killed. This video shows it in action and is deffinitally worth watching!


Citation:
Lovett, R. (2009, February 3). Transparent-headed fish. Retrieved from http://news.nationalgeographic.com/news/2009/02/photogalleries/fish-transparent-head-barreleye-picture/

Personal Post #5

Rosin!rosin.jpg
Ever since I was little I have wanted to learn to play the violin so a couple of years ago my grandparents bought me one for my birthday (It's blue and I love it!). This year I finally found someone to teach me and at my lesson the other day she mentioned how that if you bought a new bow and didn't apply rosin to it, it wouldn't make a noise when you played the violin with it. I thought that was really cool so I decided to do a little more research on what exaclty rosin was. I found out it's pine sap and depending on the time of year the tree is tapped the rosin will change its color and softness. Once the sap has been collected, it is heated and purified, and then the rosin makers takeover. Although, each rosin maker has a different recipe for their rosin and they keep it a well kept secret. After mixing their special ingredients in, they cool the rosin and poor it into moulds to harden.

Rosin works by giving the horse hairs of the violin bow a little grip. This allows the hair to pull the violin string until the string snaps back to its original position. Of course this happens over and over again, very quickly, when the bow is being pulled across the string. The noise you hear is created by this back and forth motion, or vibration, of the violin string. Rosin has to be reapplied to the hairs of the bow every so often, depending on how much you play, so that the hairs don't lose their grip.

Citation:
Unknown, . (2007). Violin rosin. Retrieved from http://www.violinstudent.com/rosin.html


Personal Post #6

Schizophrenia
My sister may be going away to work at a mental hospital this summer so I thought I would do some research about a mental disorder. I know a man with schizophrenia so I thought it would be cool to find out about that one. I didn't realize until watching this video, just how bad life can be for people who have the disorder. Many of the people in this video have voices that are talking to them about death which I really had no idea about. It's so sad that these people have to live with what we would probably call craziness, but they have no control over it and sadly; many of them will die.


Citation:
ABC, (2000). Schizophrenia part 1 - ABC 20/20 coverage [Web]. Available from http://www.youtube.com/watch?v=moP_e-gx5hk

Personal Post #7

The White Spotted Jellyfish
For tonights post I figured doing any old jellyfish would be a good post, but jelly.jpgI wanted to do one that looked cool. After hitting up google images I found a picture of a jellyfish that had these pretty looking dots of it. After doing some research I found out that this type of jelly was the White Spotted Jellyfish. This jelly is found in Australia and actually isn't all that harmful to human. If you got stung by one of these puppies you'd say ouch but you'd be fine! This jelly can grow to be 60 centimeters en length and 45-50 centimeters in diamiter. One thing I found to be really cool about them is that they are filter-feeders!They can filter up to 13,200 gallons of water per day!!! Now sadly this can be a problem because they travel together, so they can consume a lot of the plankton in one area in a day. Obviously without plankton in an area things can go wrong because now the ecosystem is out of order. Another problem is that they can now be found in the Gulf of Mexico so they could potentially end up killing other water creatures that live their. People don't actually know how the White Spotted Jellyfish got there, they just know it could cause a problem.

Citation:
White spotted jellyfish. (2011). Retrieved from http://www.jellyfishfacts.net/white-spotted-jellyfish.html

Personal Post #8

Nose Bleeds
So the other day I was talking with someone (can't remeber who or what about exactly) but we ended up talking about nose bleeds and they mentioned that they can be caused by stress. I thought that was interesting so I thought I'd do a little wiki post on it. After doing some research I found out that they can be caused by a lot of things but not necessarily stress. Nose bleeds happen when blood vessculs inside the noes brake and bleed. This can be caused by things as simple as a little knock to the noes. Blowing your noes to hard when you have a cold can result in a noes bleed as well. Chemicals that irritate your nose can also cause the blood vessels to pop.nose.gif


Now having training as a lifeguard I was taught to always make sure that when someone gets a nose bleed to have them tilt their head forward. I couldn't remeber why that was so I looked it up and found out there was a very simple reason, you could choke on your blood as it goes down your throut. Also, if it makes it to your stomach it could end up making you vomit.

Citation:
Great Ormond Street Hospital. (2008, April 22). Diabetes and noesbleeds. Retrieved from http://www.childrenfirst.nhs.uk/teens/health/dear_doc/archive/n/nosebleeds.html


Personal Post #9

Shingles
Right before the summer of 2005 when I had just finished school (I say before the summer because Public schools weren't out yet) I started noticing these strange red bumpsbelow my neck, on my upper back and below my armpit. I thought at first that this would be my first major battle with pimples and decided to just forget about it and thought it was just a part of life. After a couple of days these bumps really started bothering me and they had doubled in number. I showed my mom and she had no idea what they were so she whipped out her handy childhood diseases book and started looking for what these things were. She couldn't find anything. We went to the clinic were they told me that I had shingles. They perscribed a jell to put over them and said that it was good that we had caught them before they had spread to far. Later mom said that it had made sence that it hadn't been in the childhood diseases book because children normally don't get it.
shingles.jpg
Shingles are a skin rash caused by the same virus that causes chickenpox. The way I like to describe them is that they are exacly like chickenpox only they have a blister ontop that hurts like crazy when you touch or try to scratch. Normally shingles strike the elderly (over the age of 60), as they occur when the victoms immune system is low and the dormant chicken pocks viruse takes over. The reason I ended up with shingles when I was so young is that I had gotten the flu and a cold at the exact same time and so my immune system was very low.

Citation:
Conrad Stöppler, M. (n.d.). Shingles (herpes zoster). Retrieved from http://www.medicinenet.com/shingles/article.htm

Personal Post #10

Hemp
Hemp, as some of you may know, is a form of plant, Cannabis sativa, often used to make bracelets or nacklaces. It is made out of two layers, an inner layer or core, and an outerlayer. The inner layer is hard and is used to make things like aninal bedding and garden mulch while the soft fibers of the outer layer are used to make clothing and paper products. The hemp we use to make bracelets is made out of the soft outerfibers all woven together just likle we do with lamb wool to make the wool we use to make clothing. The actual hemp plant itself is often confused with the marijuana plant as they have to same leaf struture. Also, they are a part of the same genus but the major difference between the two is how much tetrahydrocannabinal (the stuff that makes you high) they contain.

Hempstalk.jpgindustrial-hemp.jpg
hemp.jpg
Citation

Sheppard, L. M. (n.d.). How is industrial hemp made?. Retrieved from http://www.answers.com/topic/industrial-hemp