lecture 8 - cellular respiration Flashcards
What are the 3 stages of cellular respiration.
glycolysis, pyruvate oxidation & citric acid cycle, oxidative phosphorylation (1. electron transport chain 2.chemiosomosis)
What are the inner membrane folds called and why is it highly folded?
cristae - for larger surface area
Mitochondria have 2 membranes. What is the space in between called?
intermembrane space
How long is the mitochondria?
1-10 micrometers
Name the inputs and outputs in glycolysis.
glucose is converted into 2 pyruvates which generates 2 ATP and 2 NADH (high energy electron carriers)
What occurs in the pyruvate oxidation and citric acid cycle.
Pyruvate is converted into Acetyl CoA which release 2ATP and CO2. Acetyl CoA enters the citric acid cycle which produces 2 ATP, 6NADH & 2FADH2 as well as CO2.
Briefly explain how the proton gradient that drives ATP synthesis is generated?
the electron carriers are oxidised and lose electrons that provides energy to pump protons across the membrane (against their concentration gradient)
Briefly explain how the proton gradient generated by the electron transfer chain drives ATP production.
as the H+ ions move down their concentration gradient, ATP synthase harnesses the energy & phosphorylates an ADP molecule to a phosphate group and makes ATP
What are the overall inputs and outputs of cellular respiration.
input: glucose and oxygen
output: : carbon dioxide and water and ATP
Where is the electron transport chain located.
on the inner membrane
When is water produced.
during the electron transport chain
Which process occurs in the cytosol.
glycolysis
