Exam 2 Review Flashcards
(19 cards)
Where does glycolysis occur?
in the cytosol
cellular respiration occurs where?
in the mitochondria
The Mitochondria breaks glucose molecules down into?
CO2 and H2O
Glycolysis produces?
2 Pyrubic molecules per glucose
How is H+ EC gradient generated in mitochondria?
through respiratory electron transport in mitochondria
Where does the citric acid cycle occur?
in the mitochondrial matrix
The citric acid cycle produces what kind of power and in what form?
Reducing power in the form of NADH
Define chemiosmotic coupling
generating EC gradient and harnessing EC gradients to do work
What does the respiratory electron transport chain do?
generates H+ electro chemical gradient that drives ATP synthesis
NADH donates how many electrons to respiratory e- transport?
2 e-
what does the gradient do?
moves H+ across gradient, total of 10 pumped out
what components are needed to make H2O?
2 H+ and 0.5 O2
How many H+ pumped out per NADH oxidation?
10 H+
Glycolysis in 3 steps
1- Input of energy = 2 ATP’s to convert glucose to fructose
2- Cleavage of 6 Carbon to two 3 carbon sugars G3P
3- Energy capture per G3P get 2 ATP and 1 NADH. Total yield * 2. End w 2 Pyruvate
Glycolysis Energy Yield
Glucose -> 2 ATP used to have => 2 NADH & 2 ATP and 2 Pyruvate
How does glycolysis link to citric acid cycle?
Pyruvate enters Mitochondrial matrix and w CoA makes NADH and CO2 to now become Acetyl CoA
What is special about Acetyle CoA
contains high energy bond
What is the Citric Acid Cycle Inputs and Outputs?
Input an Acetyl CoA, and Output 3 NADH, 1 FADH2, 1 GTP and 2 CO2
What are the Citric Acid Cycle steps?
Step 1 = Acetyl CoA 2C, Step 2= 6C, Step 3= 6C, NADH, CO2, Step 4= 5C, NADH, CO2, Step 5= 4C, GTP, Step 6= 4C, FADH2, Step 7= 4C, Step 8= 4C, NADH
