Lab Response: Chicken Wing Dissection

This week in science class, our teacher dissected a chicken wing. The purpose of dissecting the chicken wing was to see all of the muscles/tissues that was in the chicken and relating  it to our what is in our body and how they help our body move. While my teacher was dissecting, she would call us up and show us the different types of bones and what they classify into. I think that his was a good way to learn and remember about the different bones/tissues/muscles in the body. I hope that we can do something like this again.

Diffusion Lab Quiz

The purpose of this lab was to observe the diffusion of a substance across a semi-permeable membrane. Diffusion is a process by which molecules move from an area to a higher to lower concentration. Also, the lab had an example of osmosis. One prediction that was made was that the concentration (iodine solution) would go through the plastic baggie and change the color of the starch inside of the baggie. The beaker with the concentration in it was more hypertonic than the baggie, which was more hypotonic. Hypertonic means that it is a solution with a greater concentration than another. Hypotonic is the opposite of hypertonic.  

            This procedure was just like a cell. When the starch and the concentration met, the water and concentration were like nutrients to the cell. The starch is the organelles, and the baggie could act as a cell wall. After we put the baggie filled with starch in the concentration, we had to wait fifteen minutes so we could see how the concentration affected the baggie. In the end of the fifteen minutes, the baggie turned purple, when it was originally white.

            This lab had a lot of connections to everyday life. My first example is if you put a juice mix such as Kool-Aid into a glass of water. This is just like when the iodine came in contact with the starch. My second example is a balloon filled with air. Another example is a fire place when it is filled with fire. My last example is when you bake cookies and the smell goes into the air, this is like the lab because the smell is affecting everyone. 

Lab Response

This lab was a very fun experiment. At the very beginning, we had to put on safety goggles. First we had to fill our plastic baggies with water and starch. After we tied the baggies around, we had to fill our beaker with concentrate and water. Then we put the baggies in the the beaker. At first, the color of the bag was white and the color of the beaker was tan. After fifteen minutes, the bag turned kind of purple. This lab is very fun so far and I hope that we could do something like this again.