Digestion Lab
In science class, we did a lab that helped us understand how digestion works. We had four test tubes labled A, B, C, and D. We put three pieces of cut up egg white in each test tube. In test tube A, we put in 10 mL of meat tenderizer (A.k.a pepsin) and there was no immediate reaction. In test tube B we put in 5 ml of pepsin, and 5 mL of water and again, we didn't see an immediate reaction. In test tube C, we put in 10 mL of hydrochloric acid, and we could see the liquid bubbling, and small holes already forming in the egg white. In test tube D, we put 5mL of pepsin, and 5 mL of hydrochloric acid, we also didn't see an immediate reaction. We used strips of blue litmus paper to see how acidic the solution was. In test tube A, our litmus paper stayed blue. In test tube B, it stayed blue, but was wet. In test tube C, our litmus paper turned an orange/pink color, because it was acidic, and in test tube D, it also turned orande/pink because it was acidic. The next day, we looked at our test tubes again, and there were some major diffrences. In test tube A, the egg white was almost all disintegrated, but in test tube B, there wasn't a reaction. In test tube C, the eggwhite was almost all gone because the acid had broken it down, but in test tube D, there wasn't a reaction. We used the litmus paper
again, and the paper stayed blue for test tubes A and B. The litmus paper turned orange/pink again for test tube C , but not for test tube D. The first day the litmus paper changed but now it didn't because the acid probably wasn't there anymore. This lab was a good way to show how the digestive system worked, because the hydrochloric acid in our stomachs works the same way.
In science class, we did a lab that helped us understand how digestion works. We had four test tubes labled A, B, C, and D. We put three pieces of cut up egg white in each test tube. In test tube A, we put in 10 mL of meat tenderizer (A.k.a pepsin) and there was no immediate reaction. In test tube B we put in 5 ml of pepsin, and 5 mL of water and again, we didn't see an immediate reaction. In test tube C, we put in 10 mL of hydrochloric acid, and we could see the liquid bubbling, and small holes already forming in the egg white. In test tube D, we put 5mL of pepsin, and 5 mL of hydrochloric acid, we also didn't see an immediate reaction. We used strips of blue litmus paper to see how acidic the solution was. In test tube A, our litmus paper stayed blue. In test tube B, it stayed blue, but was wet. In test tube C, our litmus paper turned an orange/pink color, because it was acidic, and in test tube D, it also turned orande/pink because it was acidic. The next day, we looked at our test tubes again, and there were some major diffrences. In test tube A, the egg white was almost all disintegrated, but in test tube B, there wasn't a reaction. In test tube C, the eggwhite was almost all gone because the acid had broken it down, but in test tube D, there wasn't a reaction. We used the litmus paper
again, and the paper stayed blue for test tubes A and B. The litmus paper turned orange/pink again for test tube C , but not for test tube D. The first day the litmus paper changed but now it didn't because the acid probably wasn't there anymore. This lab was a good way to show how the digestive system worked, because the hydrochloric acid in our stomachs works the same way. 
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