Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
What is the krebs cycle?
|
is a series of enzyme-catalysed chemical reactions, which is of central importance in all living cells that use oxygen as part of cellular respiration.
|
|
Very first thing that has to happen?
|
The pyruvate created from glycolysis has to move into the mitochondrian (in eukaryoitc cells).
|
|
What are co-enzymes? Why are they important?
|
- non-protein
- many are vitamin derived - functional group or electron carriers - many are made from nucleic acids Important in step three of the process. |
|
Co-enzyme A/?
|
Important in third step. made from vitamin B5.
|
|
Once pyruvate is converted into Acetyl-coA, what is the first major step of the Krebs?
|
Acetyl-coa turns into the 6 carbon citrate`
|
|
Second major step?
|
NADH and a CO2 is ripped off as it becomes a 5 carbon, and the same things again as it becomes a 4 carbon.
*Going between the 5 and 4 carbon creates one ATP. |
|
What is FADH2?
|
Flavin adenine diphosphate. An electron carrier, somewhat like NADH, but the e- it carries has less potential energy than those in NADH.
|
|
What's important to remember about all electron carriers?
|
Partially made up of nucleic acids.
|
|
Part 3?
|
The four carbon goes into the final four carbon state (oxolacetate), and then the cycle repeats with the donation of two more carbons from incoming acetyl-coa.
|
|
Potential energy output of Krebs cycle?
|
From 1 glucose -- 2 Krebs cycles
8 NADH 2 FADH2 2 ATP ** 2 of the NADH are from the conversion of pyruvate to acetyl-coA. |
|
Most energy harvested is conserved by what?
|
NADH
|
|
Most ATP will be generated when?
|
once NADH and FADH2 feed their electrons
into the electron transport chain & oxidative phosphorylation |
|
Finish this sentence:
2 carbons enter (Acetyl-CoA) cycle and |
2 different carbons leave as CO2
|
|
Starting with citrate, what are the 8 forms the Krebs cycle takes?
|
Citrate, Isocitrate, Alpha Ketroglutarate, Succinyl CoA, Succinate, Fumarate, Malate, Oxoloacetate.
|