Today is Science Solutions Tuesday. In this blog, I will be describing DNA, and what it looks like. DNA is what we are currently learning in Mrs. Poole's science class. DNA is like a blueprint, of who you are. It is the shape of a double helix. It almost looks like a twisted ladder. DNA was mainly discovered by Rosalind Franklin, but other scientest had helped too. DNA is a really interesting thing to look at. Every living thing has cells, and DNA. DNA consists of bases, phosphates, and sugars. When DNA replicates it splits down the middle. From that same strand of DNA, there is always another identical pair inside it. When the DNA replicates the other strand is the same exact kind as the one before. Simply without DNA, no life is possible.
In summary, without DNA, there is no life. As I explained above, all living things have to have some form of DNA, within themselfs,in order to survive. As you may recall, there is DNA in animals, plants, and humans. Life is a miracle, in more so in humans, becuase we are able to survive, and specificly, a gift for humans on this earth. Also, in reading previous articles, not only do we need DNA, we also need RNA, to form life.
Today is Science Solution Tuesday. In this blog, I will be explaing mitosis. Mitosis is a process in which a cell has to complete in order to mutate in to two cells. There is five stages in all. Sometimes it takes a cell a while to complete a certain stage. After the cells are done with all five stages, they form daughter cells. I will blog more about daughter cells later. The steps in mitosis are profase, anaphase, telophase, interphase, and metaphase. The first stage a cell goes thought is interphase is when the cells are going to get ready for prophase. In prophase, the cells cromatin is all over the place and getting ready to divide. The next phase ismetaphase. Metaphase is when the cells meet up to the cells equator. This is when the nucleus is deciding whos going to go to the next cell. The nuclus is the brain that sepreats the chromatin, so that both cells have an equal amount. The next phase is anaphase. Anaphase is when the cells are slowly turning into two cells. This is like it is almost gonna pop their bubble, so they can be free. The next phase is telophase. This is when the cells stretch to the end and are ready to come out. The last step is cytokinesis. Cytokineses is when a cell wall starts to form to break the barrier. There you have it once the cell wall is formed you have two new cells!
This is the process of mitosis. We are currently learning this in my science class.
Today I will be blogging about bacteria, plant, and animal cells, and what they all have in common. First of all the first thing they have in common is that they are all cells. They all have at least two or more cells in them. Bacteria does not have alot of things in common with animal cells. Plant cells and animal cells both have nucles, golgi complex, vacuole, chromatin,etc. Those two really have some of the same things in them, but animal cells don't have chloroplasts, like plant cells do. Bacteria is like a germ. It is small and could move anywhere it wants to. This is a problem, because bacteria could make you sick. Unlike animal cells and plant cells, bacteria could be made of nasty things, such as diseases.
I have learned most of this lesson from my science teacher. Like I have said in my previous Science Soulotion blog, we have learned this lesson a while back. This is what I know about animal cells, plant cells, and bacteria. If you really think of it, bacteria dose not really share anything in common with plant, and animal cells. Each and every one of these cells has its own job.
Today is Science Solutions. In this blog, I will be blogging about if Mrs. Poole and all the other 7th grade science teachers should keep on doing the cell cake. The cell cake is a project on how well we can denomonstrate what and were are the cells parts, like nucleus, vacuole, golgi complex, and so on. You have to construct a cake that looks like a cell y using items like candy, frosting, and so on. You can decide on whether you want to do an animal cell or plant. We do this project on teams, so what ever grade you get is what the whole group gets.
I really think that this project will help students learn more about the cells parts, and what it does. At the beginning of the cell project, I did not no anything really about the cell. I only knew that it was the basic need for all living things and that you need cells to live. With this project I could tell you how each cell works and what its job is.
I really hope that this cell project will carry on and that other people may learn from this experience, because I am sure that I learned alot about cells. I really like this project and really, really, really hope that it will carry on.
Todays blog will be about the three most important cell parts in a cell. All of these are my opinion on which they might be. The three most important cell parts that I think are the vacuole, the nucleus, and the cell wall. The vacuole is important, because it can hold water and other items. It could also act like a big bag for carrying waste. The nucleus acts like the brains of the cell. It looks like a ball in the middle of the cell. The cell wall acts like a protective barrier for the cell. It takes care of the cell from any bad items that may cause bad things to happen. It kind of also acts like a gate to keep the cell protected. All of these parts has an important role in the cell. They all work for different things.
This is what I chose as the three most important cell parts. If you want to learn more about a cells parts, then read about it and research it. I hope you learned a little bit more about the nucleus vacuole, and the cell wall. We are currently learning this in my science class.
One of the science teachers at Computech has baby rats. In todays blog, I will be blgging about the rats and how they grow and how they react to things near them. Imagine that there is a baby rat. When you first see it they are all pink. They look funny, and they are small. The baby rats could fit in the palm of your hand. Then in about a week or so they start to open their eyes. Rats dont open their eyes until later on after they are born, because they haven't fully developed there pupils. Then they start to become a little more relaxed to the real world.
In week one, the rat is barley alive, and it is starting to feel its surroundings. In week two, the rats develope ears, and are very sensitive to hearing noises and sound. By week three, the baby rats now explore the food in their bowl and start to eat it. In week four the rats are fully developed, but you still have to becareful while handeling them. At week one, they were barly born, compare them to week four, they have grown alot. Even though they may seem that they are strong enough to be played with hard, their not. You still have to care for your rat, so that it could still be alive.
For more information about baby rats, please check out theses websites http://ratgrowth.homestead.com/, and http://ratguide.com/breeding/baby_development/birth_to_weaning.php.
Todays blog will be about my favorite activity in quarter one about science, and what I learned. My favorite activity in quarter one was "Frog Legs". Frog legs is an activity were you make two paper frogs, but one is made out of cardstock, and the other is made out of regular paper. The object in this activity is to measure how far the two frogs leap, and at the end you are supposed to get the average for both, and see which one leaped farther. We measured their leaps with a yard and meter stick. After we made the frogs leap ten times and averaged their score we have to finish the questions on the back page.One of the questions was, "Which frog did you think was going to leap further?" The frog that I said was the cardstock frog would leap further, because it was a little bit more heavier, which kind of gave it more bounce. My
prediction was correct. Everytime you want to make an expirement, you have to ask a meaningful question first, or you'll never know if you prediction would be right.
I learned how tho use a meter and yard stick, and how to make an oragami frog. I think what it was supossed to teach you, how to use a meter and yard stick, and how to follow the steps for a good expirement. Now when someone tells me to measure something it meters, I would be able to measure it, and get the correct results. I am glad that I have been
taught to measure this way, because who knows maybe I might be a construction worker, and that would be on less thing to learn, because I have already learned it.
So, your probably wondering how to get the mass of an irregular object? If yes I will show you step by step on how to.
First, you are going to need a graduated cylinder. Make sure it has marks on it so you know how much water is in it. Next, you are going to count how many increments it goes up by. Increments are the lines that shows you how much they go up by, for example it would have said, say 50 then you see a line and then it says 60 you can assume that the middle line will be 55. Then, you are going to fill up the cylinder with a reasonable amount of water, make sure to graph how much water is in it. Then, put the graduated cylinder on a flat suface, this is very important. If you don't put it on a flat surface all your calculations will be wrong. Wait until the water is flat and you can see it at an eye level. Never pick it up just leave it on that flat surface. Next, take your object and place it inside the cylindar carefully. Once again, before you start making measurments make sure that the water is flat not wavy then you can measure it. When you measure it make sure that you have the number of fluid that was in the cylinder before the amount is now when you measured it. Then you subtract. For example if I had 50 increments of water before I put in the object then I would take that number and subtract it by how many increments are in the water now. So, the water went up to 70 increments I now just simply subtract 70 by 50, and get 20. So, that objects volume is 20.
I hoped this really helped you and remember all these steps!
In science yesterday, we learned all about measuring,and that science requires alot of measuring. We learned how to measure in cetimeters,meters, millimeters,and cubic centimeters. To practice measuring we measured all the things that were placed out, so that we can measure them. There was all sorts of things to measure such as: paperclip box,a string,pencils,and even more items. Then we did this activity with paper frogs. We had to make two different kinds of frogs out of two different kinds of paper. We had to make a hypothosis on which frog would jump farther,the paper frog or the cardstock frog. We had to average out the distance between the both frogs.That was another way we practiced measuring with a yard stick.
Then we practiced another type of measuring. We practiced measuring volume. It was easier than I expected to be,because we already know how to measure,so volume was just another sorce. We went all over the classroom to measure things in volume.We measured little boxes,big boxes, medium boxes,wide, etc. It was fun,because we got to interact educationaly.
Hereditary is something you inherit from your family. As we have learned in science, our body is made up of DNA. DNA is our genetic make up. It is like a blue print of your traits and characteristics. You can inheriate many things from your parents and grandparents, even other blood relatives. You can inheriate physical features and illnesses. For example, I have light brown hair and my mom does too. Here's another example, my uncle has green-blue eyes and so does my grandpa, but not my grandma. This is just how hereditary works. My grandma has straight hair, and so do I. Its a weird thing and you can inherit almost anything. Heres another example, my dad's vision is near-sided, my vision is near-sided as well. A parent can also pass down illnesses to their children. For example my grandma has diabetes and high blood pressure. So, when my mom goes to the doctor, her doctor is always checking her sugar levels. She tells her that since her mother has diabetes she has a high probability of developing this disease I've even heard on the news, that if one of your relatives has cancer, you are at risk of possibly having cancer.
Unfourtunatly, we can not pick and choose what we would like to inherit from our family. We have to learn to deal and make the most of what is handed to us. Since science is always changing, mabey the will come up with something in the future were parents could pick and choose the traits they want for their child. I think the thing we can do now is try to lead a healthy life, so that our health wont be so bad. As far as physical traits, we just have to learn to love ourselves the way we are.
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