So, for this week's Weekly Science Article Report, please find an article that addresses cells in some way and report back to us about it.
As a reminder:
1) Cite your article
2) Write a brief (no more than 2 sentence) summary of the article.
3) Write a reflection on the article, sharing about what your learned, what surprised you, and what questions you had. You should also add how it connects to what we have been studying in class.
This assignment is due by Friday, April 23.
Posts
21 comments:
In science news for kids i found a artical called Making Light of Sleep. This artical is by the Lab of Mariana.
This artical is about a clock located in your brain. It dosent tell the time it tells when you sleep, eat and when your awake.
I learned that there is a clock inside you telling you when your awake, when your asleep and when you eat. the thing that suprised me was the fact that you have a clock inside you. It suprised me because i thought your brain told you what to do not a clock. what is the point of having a clock inside you if you have a brain?
This article is called Stem Cells by... it did not tell me. I got it from www.newsforkids.com.
This story is about stem cells and how they started are life. Then cells go on to develop into any of the 200 cells in are body.
I learned that we start out as a stem cell. I also learned that there are 200 cells in an adult human body. The thing that suprised me was that the fact that we have some much cells in are body (200). Why do we need all of those cells in are body? What do the cells in are body do? It connects to what we are doing in class because we are studing cells in the human body and that is what im talking about here.
Golgi's job stretches it thin
http://www.sciencenews.org/view/generic/id/48464/title/Golgis_job_stretches_it_thin
This article was about Golgi bodies and why they are shaped the way that they are, the reason is a protein called GOLPH3, a motor protein and a final molecule which was already known to help the Golgi bodies work. The scientists involved also learned that if any of the three molecules resulted in immediate shutdown and deformation of the organelle.
I learned a whole lot of things about Golgi bodies including what I just stated about why they are shaped the way that they are and also the fact that the bubbles that surround the things that are exported out of the cell are actually made of the membrane of the Golgi body. What surprised me was that there are so many ways to say Golgi body: Golgi body, Golgi apparatus, Golgi complex and probably many more. A question that I had was: what are the names of the other unmentioned molecules that give the Golgi body its shape?
My article was The tell-tale bacteria. I got it from http://www.sciencenewsforkids.org/articles/20100407/Note2.asp
My article was mostly about how scientists are trying to use “bacteria finger prints” to fight crime.
This article interested me because I can’t believe I didn’t think of this. It seems so simple; just compare the bacteria on a person’s hand to the bacteria on an item from the crime scene. It also interested me that we are not only looking at a person’s cells but the cells on the person.
This relates to what we are doing at school, because we have recently watched a lecture on how bacteria and humans live in sic. I only have a few questions about this article, if we had a hard time just mapping the DNA of the human body, how can we map the bacteria of our hand? There must be millions of those little guys on there. All I know is that they were able to do it and not just from the hands of one or two people but from the hands of about 270 people. I also want to know when this technology will be launched.
Input out!
1) http://topics.nytimes.com/topics/news/health/diseasesconditionsandhealthtopics/stemcells/index.html
There is an unknown author for this article.
2) This article was mainly about how scientists are doing research on stem cells to one day help cure disease like cancer, Alzheimer's and Parkinson's disease and even paralysis.
3) This article thought me that stem cells are very useful to society and to people. If they can transplant stem cells though the body that would be a major scientific and medical accomplishment. This article tells about what a stem cell does to cure these diseases and how it functions to do that. But if this doesn’t work and it’s already approved by the FDA, what will happen the? Also, what kind of doctor’s or sergeants to do this presager to cure disease
From Stem Cell to Any Cell
Emily Sohn
http://www.sciencenewsforkids.org/articles/20051019/Feature1.asp
Summary: Doctor Gary Friedman explains how stem cells can help a person recover. He also says what they are and how they can help someone that doesn’t need to recover.
Reflection: I learned that some organs are actually harder to fix then others. What I really thought was interesting as that scientists have found stem cells in umbilical cord blood. Millions and millions of babies are born a year, each with a umbilical cord attached, this would mean a lot of stem cells. What I thought was pretty cool was that scientists can actually make stem cells out of a persons own cells.
One of the main things that surprised me is that among the easier to fix organs was the heart, since its pretty complex. Another thing that kind of surprised me this that if you take and old man and add some stem cells you get a really active person.
The question I have after reading this is: “How do the scientists make a persons cells become stem cells?”
This has to do with what we are doing in school because, we are studying cells and for a while we have talked about stem cells and what they are.
Title: Brain Cells take a Break
Author: Stephen Ornes
URL:http://www.sciencenewsforkids.org/articles/20090715/Feature1.asp
Ever wonder whats going on in your brain when you are asleep? This article talks about what brain cells do when you're catching some Zs.
Scientist used an EEG as a tool to see the activity in your brain. When a person hears something when they're asleep, a squiggle called a k-complex shows up. A K-complex shows up when there is a significant change in brain activity. All of this activity is conducted by Neurons, a type of brain cell. With the EEG, they can see when these Neurons take a break, and when they are working.
I liked this article because it helped me understand how the brain works when you are not. I believe that with the EEG, scientist can dig deeper and find out more about the brain and the world of dreaming.
I thought this tied into cells. Since Brain cells are a type of cell, they have different functions, yet similar to other cells. Brain cells have different functions that are essential to living in the human body.
What else can we learn about Neurons/the Brain using the EEG?
What is the job of a Neuron?
How will this information scientist found be useful in sleeping?
Title: Brain Cells take a Break
Author: Stephen Ornes
URL:http://www.sciencenewsforkids.org/articles/20090715/Feature1.asp
Ever wonder whats going on in your brain when you are asleep? This article talks about what brain cells do when you're catching some Zs.
Scientist used an EEG as a tool to see the activity in your brain. When a person hears something when they're asleep, a squiggle called a k-complex shows up. A K-complex shows up when there is a significant change in brain activity. All of this activity is conducted by Neurons, a type of brain cell. With the EEG, they can see when these Neurons take a break, and when they are working.
I liked this article because it helped me understand how the brain works when you are not. I believe that with the EEG, scientist can dig deeper and find out more about the brain and the world of dreaming.
I thought this tied into cells. Since Brain cells are a type of cell, they have different functions, yet similar to other cells. Brain cells have different functions that are essential to living in the human body.
What else can we learn about Neurons/the Brain using the EEG?
What is the job of a Neuron?
How will this information scientist found be useful in sleeping?
Article: Scientist turns skin cells into heart cell
Link: http://www.upi.com/Science_News/2010/03/02/Scientist-turns-skin-cells-into-heart-cell/UPI-92641267560798/
What my article was about was how a scientist has a theory that he can take regular skin cells and turn them into heart cells( almost like stem cells)
What I liked about this article was that it was easy to read and that they got rite to the point. What I didn’t like was that they didn’t really explain how it would work just really briefly. What I thought was interesting is that you can be able to train a cells that a already has a job and then give it another job, which is unlike stem cells those are cells that have no job to begin with. Also I thought that if it work it would be able to solve many types of different heart diseases and also that you could use more skin cells than you have stem cells, also the scientist said this would reduce heart attacks.
One of the questions that I have that I already stated before was how this work would. and also could this work with any other cells not just skin cells that could fix heart cells.
Article: Scientist turns skin cells into heart cell
Link: http://www.upi.com/Science_News/2010/03/02/Scientist-turns-skin-cells-into-heart-cell/UPI-92641267560798/
What my article was about was how a scientist has a theory that he can take regular skin cells and turn them into heart cells( almost like stem cells)
What I liked about this article was that it was easy to read and that they got rite to the point. What I didn’t like was that they didn’t really explain how it would work just really briefly. What I thought was interesting is that you can be able to train a cells that a already has a job and then give it another job, which is unlike stem cells those are cells that have no job to begin with. Also I thought that if it work it would be able to solve many types of different heart diseases and also that you could use more skin cells than you have stem cells, also the scientist said this would reduce heart attacks.
One of the questions that I have that I already stated before was how this work would. and also could this work with any other cells not just skin cells that could fix heart cells.
“Multi-Celled Animals May Live Oxygen – Free” By Susan Milius
http://sciencenews.org/view/generic/id/58154/title/Multicelled_animals_may_live_oxygen-free
This article was about the loriciferan, a multi-celled creature living under the Mediterranean Sea. Scientists did some experimenting in oxygen-free chambers and the loriciferans survived.
I learned that the loriciferan is adapted to an oxygen-free environment by its having no mitochondria whatsoever. But, it does have added organelles to compensate for the absence, like symbiotic organisms that are rod-shaped. These help harvest energy. What I was surprised about was that the loriciferans have their own phylum already. It shares the phylum with mollusks and arthropods. I do have some questions. What conclusion will this discovery come to? Have scientists found anything like the loriciferan before? Are they planning to? What’s the name of the phylum? What is the loriciferan’s diet? Does the loriciferan have more unusual organelles than the ones said in the article? This article connects with what we’re doing in class in then way that it talked about the organelles of the loriciferan. It also talked about regulation.
www.sciencenewsforkids.org/
From Stem Cell to Any Cell
Emily Sohn
this time i deicide to find an article REALY about cell because last time we did a cell article mine was only kinda about cells so i searched hard a hopefully this is an article all about cells (which i'm pretty sure it is because of the title)
The article i read was about how stems cells could be used in many assortments of ways from repairing tissue/organs to curing disease! Scientist are even more happy when they found out stem cells exist in everyone
I fell like i learnt lots of things about stem cells like younger children's stem cells are much easier to use to repair then adults stem cells because they are still dividing and specializing, and when we get older our stem cells start being abel to diversify less and less, another thing that i learned MANY stem cells are in the umbilical cord of a newborn baby and they could be useful in many ways also lungs and kidneys are the hardest organs to repair or you can get a fully abel to walk old man by taking another persons stem cells
I guess i have some questions my first one would be if i took a baby and a old man and gave the baby the old mans stem cells would the baby soon have a harder time to walk? and if cells are reproducing couldn't adults stem cells be as active as a babies?
I think this connects to our class because we recently watched a video and one part had a guy getting a stem cell surgery!
<3 <3
Y.F.
"Making the Most of a Meal"
By Stephen Ornes
www.sciencenewsforkids.com
In the article the author takes the saying "you are what you eat" (meaning the nutrition in your diet influences your health) and explains how this phrase, unlike in most cases, is true for a very "different" kind of animal, the sea slug Elysia chlorotica.
This article was very interesting, and it familiarized me with plant cells more. The author talks about how the sea slug takes in the algae's "key" tools for using sunlight to make food, which as he explains, is known as photosynthesis. I learned from this paper how scientists and researchers are now figuring out that slugs not only produce but steal a chemical that goes by the name of chlorophyll, which is critical in the food making process. The article later explains how the tiny structures called chloroplasts turn carbon dioxide and water into glucose or sugar using sunlight and a very important chemical called chlorophyll. I later discovered that this funky process that is done by these sea slugs is called photosynthesis. The article mentions algae that gets digested by the sea slugs also uses photosynthesis and when the slug eats it it separates the chloroplast instead of excreting it. I thought this was interesting because the cell acts like a sponge, which allows it to create photosynthesis to make food.
Basically, the whole article altogether was pretty surprising, but when I found out how similar an animal like a sea slug can be to a plant, I pretty much fell out of my chair. For example, a plant has genes that contain the "blueprints" and instructions for chlorophyll, which allows them to take in the nutrients and sunlight to create photosynthesis. But the weird thing is, so do sea slugs. This is crazy because the one golden rule in biology and life science is that plants are the only things to make photosynthesis. But sea slugs not only take in the chloroplasts, they also have adopted parts of this genetic information from their food. I also found how chlorophyll got it's name. I discovered how the first part of the word came from the Greek word chloros, meaning "green" (chlorophyll turns the plant green) As cool as this sounds, what really shocked me was how once a slug has chloroplast inside it's cell it can create photosynthesis to make food, which means that they may not have to eat for the rest of their lives! How cool is that, it is like having a mini refrigerator inside your body that pumps food to your stomach!
Some questions I have about the article:
In the article it mentioned something about coral maybe having a situation like these sea slugs do. Are scientists positive that these slugs are the only animals to live that create photosynthesis? I am not sure if this was already mentioned in the article, but do sea slugs have animal cells or plant cells in them? If they perform photosynthesis and are green, they must have plant cells in them. But, what about animal cells? They are classified as animals, aren't they? Also, how many chloroplast cells does it take to make photosynthesis? The article mentioned many things about a man named Sidney K. Pierce. Who exactly discovered these plant animals, and where and when did it happen?
Although this article I chose does not talk about cells in general, it does focus in on a very specific cell, chloroplast. As we have been studying in class over the past few days, a plant cell contains many tiny structures, a few of them being chloroplasts. I thought by choosing this article I could focus on plant cells, because in the past I have only learned about animals and their cells. By choosing plant cells I could learn about two things, one new and one old: chloroplasts (new subject) and photosynthesis (a subject I am familiar with). Because of this article, I can extend my knowledge on an old subject and grow my knowledge on a brand new subject, that can explain many important things that take place in plant cells.
"Do white Blood Cells Make Cancer Deadly?"
By John Pawelek
http://www.scientificamerican.com/article.cfm?id=investigating-cancers-deadly-fusion
My article that I read was about how when White Blood Cells combine with Cancer Cells, it can be very bad.
What I learned from this article was that not only can White Blood Cells fuse with Cancer Cells in lab animals, but can also be possible in Humans too. I also learned that one of the leading cause of death is Metastasis. But,as Pawelek says,"You have to know Metastasis starts, to fight it." I also learned that Cancer Cells spread after fusing with White Blood Cells called Macrophages - Macrophages can roam around and take up most parts of the body, and are naturally resistant to toxic drugs-.
What I had been surprised by, (as I said before)was that not only in lab animals Cancer Cells fuse with White Blood Cells, but can also be possible in Humans too! Also, that such hybrids can help cancer spread!
One question that I have is, why do Cancer Cells need the right genetic changes in the right order to spread successfully?
http://www.cancer.gov/cancertopics/what-is-cancer
What is cancer? By anonymous
This article talks about cancer cells. It is actually a group of diseases that all have to do with cells not working as they should. Cancer occurs when certain cells that don’t perform normal functions rapidly multiply and spread throughout the body. Those cells are created when the DNA of a normal cell is damaged or changed, making it a cancerous cell. It spreads through the veins and multiplies in the bloodstream. Cancer is deadly and there’s no true cure for it yet, although it is being worked on.
I think this article was interesting and well written. I learned a lot about cancer and how it begins. Although its kind of scary to think about cancer, its kind of interesting. I learned a lot about cancer cells and why they become cancer cells.
http://www.cancer.gov/cancertopics/what-is-cancer
What is cancer? By anonymous
This article talks about cancer cells. It is actually a group of diseases that all have to do with cells not working as they should. Cancer occurs when certain cells that don’t perform normal functions rapidly multiply and spread throughout the body. Those cells are created when the DNA of a normal cell is damaged or changed, making it a cancerous cell. It spreads through the veins and multiplies in the bloodstream. Cancer is deadly and there’s no true cure for it yet, although it is being worked on.
I think this article was interesting and well written. I learned a lot about cancer and how it begins. Although its kind of scary to think about cancer, its kind of interesting. I learned a lot about cancer cells and why they become cancer cells.
http://www.NaturalNews.com/027960_cesium_cancer_cure.html This is the link to the article. My article is called Cesium: A Cancer Cure That Slipped Through the Crack by: Paul Fassa.
In the article it explains that there is a mineral that can get into a cancer cell and destroy it. There is a physicist named Keith Brewer and he had and experiment with 30 patients with different forms of cancer and all 30 survived their cancers from the use of the Cesium therapy.
I learned that Cesium therapy can be used to treat and kill cancer and save many people. What had surprised me is that in another experiment had go on, 50 people had done as many treatments there are other than the Cesium therapy. Half of the people survived their cancer after being treated with Cesium therapy. I would like to know if the Cesium is a lot of money to get? I think this connects to what we have been doing because it talked about how the cell wall of the cancer cell can get penetrated be the Cesium and it can then attack and kill the cancer cell.
Half rooster, half hen
http://sciencenewsforkids.com/articles/20100331/Note2.asp
1. The article i read called half rooster half hen and it was mostly about a hen/rooster that has one half of each chicken has thicker legs and bulging muscles, like a male, or rooster. The other half has thinner legs and darker feathers, like a female, or hen. This article had to do with cells because of their sexual mix, these chickens give scientists a good way to study how a living thing becomes male/female.
2. I thought this article was one of the coolest i have seen all year! One of the things that i thought was really cool is that In the recent study, scientists from the Roslin Institute in Edinburgh, Scotland, say individual cells in a chicken can have their own sexual identities, in both male and female birds. I thought that was really cool because each cell could have there own identities. I thought that was interesting.
I found an article called "Photosynthesis: A New Source of Electrical Energy? Bio-fuel Cell Works in Cactus" (No writer stated). The article was about these French scientists that created a novel bio-fuel cell. They did a few experiments with the cell (Like putting it in a cactus).
I liked the article because it talked in detail about how the scientists performed the experiments with the novel bio-fuel cell. What I didn't like was that they didn't really explain what a novel bio-fuel cell is. Most of the article was about how they made a way to convert solar energy (by photosynthesis) into electrical energy in an environmentally-friendly way. And since it's Earth Day, I thought something environmentally friendly would fit the day. The article fits into what we've been doing in class because it was about using cells and photosynthesis to make energy. (With CACTUS'S! Who doesn't like CACTUS'S?!) :-)
http://www.sciencedaily.com/releases/2010/02/100218092846.htm (Link to site)
Citation: Skin Cells Formed Directly Into Neurons
by Tina Hesman Saey
from science news for kids
Summary: Scientists at Stanford University have discovered a way to turn stem cells into neurons. They have only tested this on mouse cells but if it works on human cells scientists may be able to skip reverting the patients cells to an embryonic (a very early stage in development) state.
Reflection: I learned a lot of stuff about cells converting into neurons. One thing I saw that I thought was cool was the opinions of two scientists. They both said that this is good because the body can now heal itself. The other said that it was bad because that's not something you want happening in your body. I was surprised that this article was about a big breakthrough, but scientists were not sure if it would work because they only tested it on mouse cells. I was surprised by this because usually when you see an article about a scientific breakthrough it has usually been proven already. I would like to know if scientists can use other types of cells to make neurons like stem cells or bacterial cells.
Site: http://www.buzzle.com/articles/smooth-endoplasmic-reticulum.html
Author: Sonia Nair
Summary : This article about what are Endoplasmic Reticulum. And also it tells you about
How there are different kinds of ER.
SO I LEARNED A LOT AND I FOUND OUT ABOUT A FEW THING IT DIDN’T EVEN KNOW
ABOUT. ALSO I LEARNED IT CONTIAN RIBSOMES AND THAT’S ALL.
http://news.bbc.co.uk/earth/hi/earth_news/newsid_8663000/8663139.stm
This article is about the new airport security in the UK. Does this mean that there are going to be more or less jobs?
This article surprises me that the airport security can now see the metals inside your body. It kind of violates the standard of personal space.
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