Astudent cut a small piece of beef liver, placed it in a test tube, and added 2 ml of hyrdogen peroxide. the temperature of the peroxide was 37oc and the ph was 7.0. the reaction generated a gas that the student measured as the height of the foam in the test tube. in this case, the liver plus hydrogen peroxide generated 10 cm of foam (gas bubbles).
the student repeated the experiment but this time she boiled the liver for 2 minutes before adding the hydrogen peroxide. the boiled liver plus hydrogen peroxide did not generate any gas.
finally, the student placed a third piece of liver and the 2 ml of hydrogen peroxide in an ice bath for 2 minutes before combining the two in a new test tube. in this case, the liver plus hydrogen peroxide produced 4 cm of foam.
the enzyme in this experiment is catalase. it can be found in all living cells. it decomposes hydrogen peroxide, which is toxic to cells.
question:
1. what was the substrate in this experiment?
2. how does this experiment illustrate the specificity of the enzyme catalase? describe another situation to further confirm your answer.
3. hypothesize why the second experiment did not produce any reaction (gas bubbles).
Solved
Show answers
More tips
- D Dating, Love, Relationships Why do we feel shame?...
- S Style and Beauty How to Properly Apply Eye Makeup: Tips from a Professional Makeup Artist...
- A Animals and plants How ants survive winter: exploring the secrets of their winter life...
- F Food and Cooking Discover How to Properly Prepare Dough for Rasstegai...
- P Philosophy Unidentified Flying Object - What is the Nature of this Phenomenon?...
- F Family and Home Protect Your Home or Apartment from Pesky Ants...
- O Other What is a Disk Emulsifier and How Does it Work?...
- F Family and Home What does a newborn need?...
- F Family and Home Choosing the Right Car Seat for Your Child: Tips and Recommendations...
- F Food and Cooking How to Get Reconfirmation of Registration?...
Answers on questions: Biology
- B Biology Which of the following is not a functional group that can bond with carbon? a.sodium b. hydroxol c. phosphate d. carbonyl...
- B Biology Briefly describe the steps of protein synthesis...
- B Biology Sia fractured her leg while playing. Doctor plastered her leg and advised her to take calcium tablets and milk regularly. He also asked her to get plenty of sunlight....
- B Biology Am nevoie de un proiect/referat despre evolutionism...
- B Biology Can you help me with these questions about the movie “Osmosis Jason” 5. How is the cold medicine, Drix, supposed to help the city of Frank? 6. What does this tell you...
- B Biology Learning task 2 List 3 elements that are found in food (fruits, vegetables, drinks, etc.)needed by the human body for nourishment, indicate its roles and functions....
- E English Just as there are apps that claim to reduce stress or curb addiction, there are also apps that claim to address various problems associated with the deluge of 21st-century...
- P Physics Please I m a bit confused....
- W World Languages Suffix of मानवीय plzzz...
- M Mathematics Can someone help me with questions 1, 5, and 6. It’s about similar figures and scale drawings. It’s due tomorrow!!!...
Ответ: