- What do electrons do in photosynthesis?
- Why are electron carriers needed for transporting electrons?
- What is the relationship between the electron carriers and the electron transport chain?
- How many electrons does glycolysis produce?
- What are the functions of the high energy electrons in the electron transport chain?
- What is the function of the second electron transport chain?
Oxygen
What do electrons do in photosynthesis?
The energy of light captured by pigment molecules, called chlorophylls, in chloroplasts is used to generate high-energy electrons with great reducing potential. These electrons are used to produce NADPH as well as ATP in a series of reactions called the light reactions because they require light.
Why are electron carriers needed for transporting electrons?
Why are electron carriers needed for transporting electrons from one part of the chloroplast to another? High energy electrons are highly reactive (Their energy can be used to make NADPH & ATP.) High energy electrons move through the electron transport chain.
What is the relationship between the electron carriers and the electron transport chain?
The electron carriers take the electrons to a group of proteins in the inner membrane of the mitochondrion, called the electron transport chain. As electrons move through the electron transport chain, they go from a higher to a lower energy level and are ultimately passed to oxygen (forming water).
How many electrons does glycolysis produce?
Reaction 5 is an oxidation where NAD+ removes 2 hydrogens and 2 electrons to produce NADH and H+. Since this reaction occurs twice, 2 NAD+ coenzymes are used….
| Step | ATP (used -) (produced +) |
|---|---|
| 5 – NADH to E.T.C to FAD = 2 step 5 used twice | 2 x 2 = +4 |
| 6 used twice | 1 x 2 = + 2 |
| 9 used twice | 1 x 2 = + 2 |
| NET | 6 ATP |
What are the functions of the high energy electrons in the electron transport chain?
The electron transport chains are on the inner membrane of the mitochondrion. As the high-energy electrons are transported along the chains, some of their energy is captured. This energy is used to pump hydrogen ions (from NADH and FADH2) across the inner membrane, from the matrix into the intermembrane space.
What is the function of the second electron transport chain?
The electron transport chain is a series of electron transporters embedded in the inner mitochondrial membrane that shuttles electrons from NADH and FADH2 to molecular oxygen. In the process, protons are pumped from the mitochondrial matrix to the intermembrane space, and oxygen is reduced to form water.