Cellular Respiration
Posted: October 14, 2008
Cellular Respiration Lesson
Answer the questions in your notebook (YOU DO NOT NEED TO COPY THE QUESTIONS).
These web sites allow you to observe and learn about respiration in general and the electron transport chain of cellular respiration in more detail.
Go to: http://www.sp.uconn.edu/~terry/images/anim/ETS.html
1. Watch the animation of the Electron Transport chain.
a. As a proton (H+) leaves NADH, the proton moves from which part of the mitochondrion to which other part of the mitochondrion? From the brown side (_____________) to the green side (______________________ _____________).
b. Where does the electron move? Through a series of e______________ c__________________, also called protein carriers.
c. As the first w_______ molecule gets split, the H+ moves from which part of the mitochondrion to which other part of the mitochondrion?
2. According to the Key Points
a. What is the terminal electron acceptor? This explains why we need to breathe _________________; we need it to be the terminal electron acceptor in the electron transport chain.
b. What is produced as this molecule combines with electrons and H+ ? So ___________, along with the CO2 (carbon dioxide) that you exhale, is also a product of respiration.
Go to: http://www.sp.uconn.edu/%7Eterry/images/anim/ATPmito.html
3. Describe Step 1 and Step 2 of ATP synthesis in the mitochondria.
4. In Step 2, the movement of the protons (+) back through channels is coupled to _________ synthesis. This is how ATP is made. ATP is the energy currency in your cells – no ATP, no e _ _ _ _ y.
5. Thinking question (not on the web site). There is a theme in biology: ‘form fits function.’ What that means is that the shape or structure of things is related to how those things do their job. The inside of the mitochondrion has many folds with lots of energy complexes, or protein carriers. How does the form of your mitochondria (lots of folds) improve the function of your mitochondria (to give you energy in the form of ATP). Hint: folds increase the surface area.
Go to: http://www.sp.uconn.edu/~terry/Common/respiration.html
Click on Go and use the tutorial to learn. Make sure you use the Animate button wherever possible; it really helps!!
Click GO 3 times.
6. Where is the machinery of respiration located in prokaryotes and eukaryotes?
Click GO 2 more times.
7. In the beginning of the year, many of you sid that all living things need oxygen to survive. This web site shows you that this is NOT TRUE, because many species of ____________________ can use terminal electron acceptors other than oxygen, such as nitrate, _____________, carbon dioxide, and a few others. This is called ______________________ respiration.
Click GO 1 time, then click on Make ATP, then click on GO 2 times.
8. Proton motion causes ___________________ of the complex, which allows ADP and phosphate (Pi) to be joined into __________.
Click GO again.
9. For every ____ H+ ions that push through the ATP synthase, ____ ATP is made.
Go to: http://www.biology.arizona.edu/biochemistry/problem_sets/metabolism/metabolism.html
Take the quiz. Do only #�s 1, 2, 4, 7, 8, 9, 14, 16, 17. Do not copy the question, but write out the answer.
