Category Archives: Science 9

How do Cells Multiply

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For the final project of science 9 we have learned about cellular   reproduction and mitosis and meiosis.

Sexual Reproduction:

Sexual reproduction is a a type of reproduction that involves a complex life cycle. The cells have a single set of chromosomes and a diploid phase composed of cells with a double set of chromosomes. During sexual reproduction the male sperm may be placed inside the female’s body for internal fertilization. The sperm and eggs may be released into the environment for external fertilization. Examples

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Asexual Reproduction:

Asexual reproduction is a type of reproduction by which offspring arise from a single organism and they inherit the genes of that parent. It does not involve the fusion of gametes and almost never changes the number of chromosomes.

Types of asexual reproduction:

Binary Fission: Single cell organisms splitting into identical properties.

Fragmentation: part of an organism breaks off due to injury.

Budding: Detach to from a separate organism.

Vegetative Reproduction: Special cells in plants that develop into structures that from new plants.

Spore Formation: single cells that can grow into a whole new organism.

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Mitosis

Mitosis is a part of the cell cycle where replicated chromosomes are separated into two new nuclei. The cell division gives rise to genetically identical cells in which the number of chromosomes is maintained.

Examples:

In unicellular organisms such as bacteria, mitosis helps in asexual reproduction. Another example of the no nuclear organism is Amoeba. An amoeba uses cell division for the production of new individuals.

Meiosis 

Meiosis is a special type of cell division used by sexually reproducing organisms to produce sperm or egg cells. It involves two rounds of division that ultimately result in four cells with only one copy of each chromosome.

What is the difference between Meiosis and Mitosis?

Image result for examples of mitosis

What is the difference between external and internal fertilization? 

external fertilization: This type of fertilization is common with animals that live in water and with plants that live in moist environments.

internal fertilization: This type of fertilization is common with birds, mammals, and flowering and cone-forming plants.

Image result for external fertilization

How does the embryo develop? 

Embryonic development takes place during the first eight weeks after fertilization. During this time the embryo develops. Its cells divide constantly and tissues and organs form. During the first week the single fertilized cell develops into a mass of many cells. This mass of cells then hollows out and is called a blastula.

What happens during fetal development?

After the first eight weeks of development the embryo is called a fetus. During fetal development the organs and parts of the body continue to develop. The body adds a great deal of weight. At birth the human baby is made up of trillions of cells.

 

 

Modeling Mitosis

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Prophase: Nucleolus disappears and spindle fibers form

Metaphase: Chromosomes align on equator of cell.

Anaphase: Spindle fibers pull sister chromatids to opposite pole of cell

Telophase: Spindle fibers disappears and a nuclear membrane forms around each set of chromosomes.

Edible DNA

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1. What is DNA?  DNA  is a molecule that contains organism to develop, live and reproduce.

2. What DNA does? DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions. DNA sequences must be converted into messages that can be used to produce proteins.

3. How it copies itself? DNA replication is the process by which DNA makes a copy of itself during cell division.

 

 

 

 

 

 

 

Explore The Fields

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Explore the Fields
By: Markus Jack
My big question: How can understanding making television remotes help Tim with his everyday life?

What is Huntington’s disease?
Huntington’s disease is a hereditary illness with physical, cognitive and emotional symptoms. Huntington’s disease is caused by a mutation in the gene that makes the protein called Huntington. Huntington’s disease causes cells to manufacture a harmful protein called mutant Huntington. The mutant Huntington protein causes certain parts of the brain to die. As the brain cells die symptoms will appear in each of the three components physical, cognitive and emotional.

Why would a remote help someone with Huntington’s Disease?

A simplified remote would make it easier for someone with Huntington’s’ disease to watch television. This simplified remote control has large buttons and offers basic features making it quick and easy to use. This remote control is compatible with all new generation televisions. The Videotron remote would be a very good idea for Tim because it is simple and very affordable. I think this could really help Tim with watching Television and even with his everyday life because who doesn’t love watching TV for their entertainment. This remote can be found with more information and can be purchased on the website called Videotron. http://www.videotron.com/residential/television/terminals-and-accessories/remotes/simplified-remote

What is the difference between a Videotron remote and a regular remote?
The differences between the Videotron remote and a regular remote is the Videotron remote is more simplistic, easier to use, has less buttons, has larger buttons, less expensive and lighter to hold. Therefore, the Videotron remote would be a good choice to buy for someone with Huntington’s disease as it has so many positive benefits.I see Tim benefiting from using the Videotron remote over using a regular remote.

Is Videotron a good company to order from?
Here are some of the reviews from happy customers who were working with Videotron. Almost all of their reviews were positive and happy with their service they received. Below are quotes from three of the happy customers.
1. “Solid service, good customer support”
2. “Reasonably fast, reliable service”
3. “Stable, always online”

How do you wire a remote?
Once you purchase a Videortron remote you need to learn how to wire it to your television. Here is a video to show you how to wire and program your television remote.
https://ca.video.search.yahoo.com/yhs/search

To answer my big question: How can understanding making television remotes help Tim with his everyday life?

As you can see from the information above understanding how television remotes can help someone with Huntington’s disease, like Tim, with their everyday life. There are many benefits of purchasing and using a Videotron remote to help Tim watch television in his daily life. If you are thinking of getting a new remote, I suggest you get one from Videotron because they are inexpensive and very easy to use.

Information Fluency:
1. I found this project pretty easy to find information about. There was some really cool websites I found to help Tim with his everyday life.
2. In order to complete this project I had to find out some questions. 1. What is Huntington’s disease? 2. Why would a simplified remote help a person with Huntington’s disease? 3. What is the difference between a Videotron remote and a regular remote? 4. Is Videotron a good company to order from? 5. How do you wire a remote?.
3. I think I couldn’t of done better on this project because I took me along time to finish and I worked as hard as I could on this project.
4. I have evidence that my information is true because I have links on my project and videos to show my information is true.

Adaptive Technology Proposal

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1. We Skyped Tim who has Huntington’s  disease. We Skyped Tim because he wants to know how we can help him make life easier for him. When I first saw him I thought he would be worse than he was. He wasn’t perfect. We had a bunch if questions for him to help him. He gave us some ideas to talk about to help him. He said that the biggest thing was the TV remote. He said that  there was too many buttons on the remote. So we came up with and idea to make the controller only a couple of buttons. He was with someone on the Skype chat. It was his daughter Nikola to help him here all of the questions we had. It was a very exciting and memorable experience. I enjoyed every second of it.

2. The idea that our group came up with was the TV remote with only a few buttons on it. We chose this one to focus on because he uses the TV so much that it would be a very useful thing to have. We were thinking to have a button for the power, a button for for the channels, a button for the volume and a button for the numbers on the remote. I think we could do a lot of it on our own but we might have some trouble putting it together. We could get somebody in power tech in our school is somebody how can do these types of things. We also came up with som other ideas like a pen holder which he could use to help him draw and a pen ball to help him write. We chose these things because he talked a lot about them in the Skype chat.

3. For my group to make the TV remote we would need an old tv remote with some new wiring. It doesn’t really say a lot about my topic other than some pictures. I think it would help if i knew how to wire the remote together. Also it would help if I knew how to draw because i could design the remote for Tim. You can also buy simple remotes online but i am not sure if they would work.

4. I think in my blog post I could work on my information about the TV remote. Although their wasn’t much information just a lot of pictures. Also I think I could work on my summary for the skype chat because I had to much information in it.

Science Safety Story

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Science Safety

Finally my first Science class of the year! I have been waiting for this moment all Summer. I sit down in a chair beside my best friend. Then our teacher came in and told us that we were going to be doing a lab on the first day. I got so nervous. He said that we should know all the equipment names and how they are used. I looked to my best friend beside me and both of us started sweating. As we started our teacher said that we should get to our lab and find a triple beam balance and I was thinking to myself how should I know what that is. Then our teacher asked if anybody knew what that was and nobody put their hand up so he decided to call on me. I said I didn’t know what it was so I said isn’t it used to measure mass and grams. He said that’s correct. I felt so proud of myself.

After we weighed some objects our teacher said since we were behaving so well that he would give us another bonus lab. Everyone was so excited but this one he said was dangerous and if we weren’t careful we could seriously hurt ourselves. So our teacher told us to get our safety goggles on which is used to protect your eyes if some chemical were to splash in to them. We got out our Bunson Burners, which is a pice of equipment that produces a single open gas flame. We put that on our ring stand which is used to keep your Bunson Burners at rest so they don’t go on the table and burn the table. After we started the flame, a female student went too close to ours and because she didn’t have her hair tied back, it caught on fire and she was running around. Everyone in class was yelling at her to go under the emergency shower so she did and her hair was a disgusting black. After we finished the lab, the glass beaker was still hot so we had to use beaker tongs which is used for handling hot beakers. The next day in science class some kids asked if I wanted to play catch with a beaker and I said no because I didn’t want to get in trouble and they were making fun of me because I didn’t want to get in trouble. After they ended up breaking it and they had to pay for the whole thing. Science safety is something you always need to be aware of.

This WHMIS symbol is flammable

 

This WHMIS symbol means it is biohazardnes.