REDOX
Glycolysis
Electron carriers and ATP
Random
100
In an oxidation reaction, electrons are gained or lost?
lost
100
What sugar does glycolysis start with?
glucose
100
What is the role of NAD+ in cellular respiration?
Electron carrier
100
What type of phosphorylation is this?
Substrate-level phosphoylation
200
In a reduction reaction, electrons are gained or lost?
gained
200
Where does glycolysis occur?
Cytosol
200
Why aren't electrons transported directly to oxygen?
The reaction would release too much energy at once
200
What pathway breaks down sugars in the absence of oxygen?
Fermenation
300
In the following reaction, what is reduced?
Na + Cl ---> Na+ + Cl-
Cl
300
How is ATP generated in glycolysis?
Substrate-level phosphorylation
300
Which element represents a good source of electrons for cellular respiration?
Hydrogen (H)
300
Is delta G positive or negative for glycolysis?
negative
400
Oxidation and reduction reactions involving a partial loss/gain of electrons are the result of what?
A change of electron sharing in a covalent bond (ex. a polar covalent bond with Oxygen)
400
What are the two major phases of glycolysis?
Energy investment and energy payoff
400
What are the main food sources of electrons associated with hydrogen for ATP synthesis?
fats, carbs
400
Is oxygen needed in glycolysis?
no
500
In cellular respiration, what is the final electron acceptor? In other words, what is reduced?
O2
500
How much ATP is made and used in glycolysis?
4 made, 2 used
500
Why would ATP be used to phosphorylate a substrate? How does this facilitate breaking down of the substrate?
adding a phosphate makes the substrate less stable
add to glucose (glycolysis), keeps the glucose in the cell
500
Glucose is broken down into what molecule during glycolysis?
pyruvate