Chicken response

What occurd during the lab was we took off the skin and looked at the muscle. Then we took the muscle off and saw the ligaments. After that we saw the cartilage connecting the two bones. Then we cut open the bone and saw the bone marrow. In the lab we observed how similar the chicken wing and the human arm are. We saw how everything was connected to something. Like how the muscle tissue is connected to the bone. We also learned that when one muscle is contracted then the other is relaxed. Like when the tricep was being pulled (contracted) the bicep was relaxed and vice versa. We learned that ligaments connect to muscles together. Also that cartilage is inbetween to bones to prevent damage of them rubbing together.

Iodine Lab

We poured 100 ml. of water inside the plastic bag. Then got one spoonful of starch into the bag. We filled the beaker half way with water and put iodine inside. We put the bag inside the beaker and waited. After 15 min. the starch didn't change at all. We put in more iodine and waited another 5-10 min. Then we checked the bag again and the bottom of the starch was purple. The whole purpose of the lab was to show that the cell membrane (bag) lets certain things through (iodine). We were showing that iodine can go through the "cell membrane" and change the starch. So in the end we learned that cell membranes are semi permeable.