The Great Chicken Wing

In science we saw and video and in person a chicken wing dissection. My teacher took a meaty chicken wing. We saw the skin which is an epithelial tissue. The epithelial tissue is a type of tissue that protects the rest of the body. An example would be the skin. Below the skin we saw the muscle. The muscle tissue is what makes our body move. The muscle is pink, smooth and is connected to the connective tissue. The connective tissue is our bones. The ribs, femur, fibula, and the foot bones are all connective tissue. Inside the bones there is blood which also connective tissue. Inside the bone we can see the bone marrow. This is how the chicken made blood. The last was the nerve tissue. The nerve tissue cannot be seen in the chicken wing but it was there. That is all four types of tissue: epithelial, muscle, nerve, and connective tissues.

Science Diffusion Conclusion

In science there was a lab that I explained already below. This is the conclusion of the lab. The purpose of the lab was to see how the cell works in an animal. The solution in the bag was corn starch; in a beaker was diffusion iodine. The iodine was in water which lowered the concentration. The bag was permeable, and the corn starch could not come out. The corn starch or carbohydrates was white, and the solution was brown. Osmosis is the change of concentration in a solution when you add water or take away water. The hypertonic iodine which means that it was more concentrated, leaked through the bag and changed the color of the corn starch, which is less concentrated or hypotonic, changes color when it revealed by the indicator, the iodine. The iodine is more concentrated then the corn starch but it is still less concentrated the original iodine. What happen was that when water was added to the iodine is lowered the concentrated, this process is called dilution. The prediction of it staying white was incorrect.
During this lab the class had many implications. The implications of the lab were to figure the ways how the permeable bag is like a cell and to see how it lets the iodine in but doesn’t let the corn starch go anywhere. In the beginning, the class took about two spoons fills and put it the the permeable bag. Later, the class poured 500 ml in a beaker. Iodine was added which lower the concentration. The bag was put in the beaker. After 15 minutes the class did analyses on the bag. The color had changed.
There are many examples of diffusion. One example is a campfire. If there was a campfire the the smoke would spread a wide amount of area. Another example of diffusion is when somebody is baking cookies; the smell of the cookies fills the house. A third reason is when a person is smoking a cigarette the smell and puff of smoke hovers around the person. Last but not least is the way ink spreads in a cup of water. Let’s say there a cup of water and you drop ink in the cup. The ink spreads around and changes the color of the water in the cup.

Diffusion lab

In Science we tried to see how the membranes work in a cell. When they’re a corn starch in a bag and preamble bag, we put the bag in a beaker with iodine. Iodine will detect sugar, cornstarch, and will turn it into a purple color. At first nothing happened but after 15 the corn starch in the bag changed color. It was brown and dark brown, meaning that the iodine had reached the cornstarch. This is similar to a cell membrane when it decides what stays in and what stays out. The bag being the membrane and the sugar in the bag being the organelles shows how the membrane works. The lab was exciting, and fun. (Caution the iodine is poisonous if it touches the eye or if drank. can be found in stores such as target)