Flashcards in Cellular Respiration Deck (69)
Which processes of cellular respiration produce CO2?
The Krebs cycle (citric acid cycle)
What all is produced in glycolysis
4 ATP but a net gain of 2
Where does glycolysis occur?
What is an example of a catabolic pathway?
It breaks down a glucose molecule into ATP, water, and CO2
What is an example of a anabolic pathway?
What does oxidation gain and lose?
Results in many C-O bonds and a compound with lower potential energy
What does a molecule undergoing reduction lose or gain?
Results in many C-H bonds
Results in a compound with higher potential energy
What is the balanced chemical equation for cellular respiration?
C6H12O6 + 6O2 =
6CO2 + 6H2O + ATP
Does reduction and oxidation always occur together?
One compounds loss is another compounds gain.
Define redox, and how it plays a key role in the flow of energy through living systems.
Redox is the exchange of electrons from molecule to molecule
The reduced firm of a molecule has a high potential energy since electrons that are flowing from one molecule to the next are carrying energy with them
What are the three steps in cellular respiration?
The Krebs cycle
Oxidative phosphorylation (electron transport chain)
What are three aspects of cellular respiration
If no oxygen is available in glycolysis, what happens to the pyruvate?
It enters into anaerobic respiration
What are the products of anaerobic respiration?
Lactate (lactic acid) or ethanol
And carbon dioxide
(No further production of ATP)
If oxygen is present, what kind of respiration does the cell enter?
What is the purpose of glycolysis?
Sugar splitting (split a hexose in half)
Does glycolysis occur in both eukaryotic and prokaryotic cells?
Yas betch Yas
Does the sugar splitting occur in aerobic and anaerobic environments?
Does glycolysis use oxygen? And does is require any organelles?
No to both
What happens in the first stage of glycolysis
Two ATP molecules phosphorylate the glucose to turn it into fructose -1, 6-biphosphate
What happens after the glucose is phosphorylated into fructose?
What is this process called?
The molecule splits into two 3- carbon sugars.
What happens in the third step of glycolysis?
The G3P undergoes oxidation to form a reduced molecule of NAD+ (WHICH IS NADH)
While NADH is being reduced in glycolysis, what else is happening simultaneously?
Released energy is used to add an inorganic phosphate to the remaining 3- carbon compound.
In the last step of glycolysis, what happens after a phosphate is added to the other end of the 3 carbon compound?
This results in a compound with two phosphate groups.
Enzymes then remove the phosphate groups so they can be added to ADP to produce ATP
After the phosphate have been removed from the 3 carbon molecules in glycolysis, what remains?
Summarize glycolysis. 3 steps. The last is the most important with the most going on. If you can't do this, go back
Is glycolysis magic?
No. It happens by a series of enzymes every step of the way
Where does aerobic respiration mostly occur?
In the mitochondria
What is the link reaction
Making acetyl CoA