Cellular Respiration Flashcards
(32 cards)
Cellular respiration begins with a pathway called?
Glycolysis
What is cellular Respiration
A process in which the mitochondria cell of plants, animals, act, break down carbohydrates and other energy
What would be the problem if cellular respiration only took one step?
You would only make two ATP - you usually make 36-38.
Where does glycolysis take place?
Cytoplasm
Where do the Krebs cycle and electron transport take place?
Matrix of the mitochondria and cristea of the mitochondria.
What is glycolysis?
The splitting of glucose molecules to produce 2 pyruvate.
What is NADH?
It is an electron carrier.
What is the function of NADH in glycolysis?
It is an electron carrier- it goes to the last stage of cellular respiration, the ETC.
What happens to each of the 3 carbon atoms in pyruvic acid when it is broken down?
They turn into a 2-Carbon acetyl coA molecule.
How is 6-Carbon citric acid produced?
2 carbon molecule (acetyl caA) joins a 4-Carbon starting molecule to make a 6-Carbon intermediate.
When electrons join NAD and FAD during the Krebs cycle, what do they form?
NADH and FADH2
What does the electron transport chain use the high-energy electrons that are passed down the chain?
To reduce oxygen to water and to produce the majority of ATP made in cellular respiration.
What causes the Hydrogen+ ions in the intermembrane space to move through the channels in the membrane and out into the matrix?
The ATP synthase
Stages of Aerobic Respiration?
Glycolysis, Krebs Cycle Prep, Krebs Cycle, Electron Transport Chain.
What is aerobic cellular respiration?
Organisms that live in oxic condition require oxygen to produce ATP
What us Anaerobic Cellular Respiration?
Organisms that live in anoxic conditions do not need oxygen to produce ATP
What us Fermentation?
An anaerobic process. Yeast and bacteria that causes milk to go sour does this.
What energy investments are made in glycolysis?
Initial e energy investment where 2 ATP are added.
Energy payoff where 4 ATP is produced.
Overall leading to a net worth of 2 ATP
If there is no oxygen present what will pyruvate do?
What if there is oxygen.
No oxygen= fermentation
Oxygen= Krebs Cycle
Where does the Krebs Prep Cycle occur?
Mitochondria
List the Krebs Prep Cycle.
3-Pyruvate
Co2 2-Carbon
2-Carbon acetyl coA
Where does the Krebs Cycle occur?
The matrix of the mitochondria
Two main purposes of ETC are, and where does it occur:
- to reduce oxygen to water (gains electrons)
- to produce the majority of ATP made in CR
It occurs in the Cristae
What is the final electron acceptor in the ETC?
Oxygen
