Biology- Lecture 12 - Chapter 6 Textbook Notes.docx

2 Pages
73 Views
Unlock Document

Department
Biological Sciences
Course
BIOA01H3
Professor
Effiette Sauer
Semester
Fall

Description
Chapter 6 (6.4-6.7): Cellular Respiration Lecture Twelve 6.4a Pyruvate Oxidation  Pyruvate travels from the cytosol to the intermembrane space though large pores in the outer membrane  Then decarboxylation occurs, releasing C2 NAD+ is reduced to NADH and then CoA bonds to the acetyl molecule which transports the molecule into the matrix  2 CO2, 2NADH and 2Acetyl-Coa 6.4b Kreb Cycle  Stage in Cellular Respiration where the remaining carbon atoms from glucoses are converted into CO2  Per one acetyl-CoA o 1 acetyl-CoA + 3 NAD+ + 1 FAD + 1 ADP + 1Pi +2H20  2CO2 + 3NADH + 1 FADH2 + 1 ATP + 3H+ + 1 CoA o Per glucose: 4 CO2 6NADH 2FADH2 2ATP 6H+ 2CoA 6.5a ETC converts NADH to FADH2  Chain facilitates the transfer of electrons from NADH and FADH2 to oxygen through complex 1 NADH dehydrogenase, complex 2 succinate dehydrogenase, complex 3 cytochrome complex, complex 4 cytochrome oxidase, they are shuttled through by mobile carriers 6.4c Chemiosmosis  ETC doesn’t directly produce ATP instead it build a concentration gradient in the intermembrane space  NADH has more potential energy because its electron passes through 3 complexes, FADH skips the first complex  Each time electron goes through a complex it pumps H+ into the inter membrane space, creating electrochemical difference  Proton-motive force: combo of voltage difference and concentration gradient  Chemiosmosis: harnessing the proton-motive force to do work  Oxidative Phosphorylation: oxidation of energy rich molecules by ETC to create ATP  H+ is pumped into ATP synthase to create ATP 6.5d ATP Synthase is a Molecular Molecule  ATP is not a product of electron transport but ATP is synthesized by chemiosmosis which consumes the proton gradient generated by electron transport 6.5e Electron Transport Chain and Chemiosmosis Can Be Uncoupled  Fundamental concept that is important to grasp is that ETC and chemiosmosis are separate
More Less

Related notes for BIOA01H3

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit