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natagold natagold
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11 years ago
1. Describe the normal pathway for chemiosmosis (we used a flow diagram in class):

2.How does DNP decrease ATP production by the mitochondria?

3.How does DNP cause weight loss?

4.How does DNP cause a fever?
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Staff Member
11 years ago
2.How does DNP decrease ATP production by the mitochondria?

3.How does DNP cause weight loss?

4.How does DNP cause a fever?

See if this helps shed some light: https://biology-forums.com/index.php?topic=10674.0

1. Describe the normal pathway for chemiosmosis (we used a flow diagram in class):

This occurs both in cellular respiration and photosynthesis, which one?

The complete breakdown of glucose in the presence of oxygen is called cellular respiration. The last steps of this process occur in mitochondria. The reduced molecules NADH and FADH2 are generated by the Krebs cycle, glycolysis, and pyruvate processing. These molecules pass electrons to an electron transport chain, which uses the energy released to create a proton gradient across the inner mitochondrial membrane. ATP synthase then uses the energy stored in this gradient to make ATP. This process is called oxidative phosphorylation because oxygen is the final electron acceptor and the energy released by reducing oxygen to water is used to phosphorylate ADP and generate ATP.

In plants

The light reactions of photosynthesis generate energy by chemiosmosis. Light energy (photons) are received by the antenna complex of Photosystem 2, which excites a pair of electrons to a higher energy level. These electrons travel down an electron transport chain, causing H+ to diffuse across the thylakoid membrane into the inter-thylakoid space. These H+ are then transported down their concentration gradient through an enzyme called ATP-synthase, creating ATP by phosphorylation of ADP to ATP. The electrons from the initial light reaction reach Photosystem 1, then are raised to a higher energy level by light energy and then received by an electron receptor and reduce NADP+ to NADPH+H. The electrons from Photosystem 2 get replacd by the splitting of water, called "photolysis." Two water molecules must be split in order to gain 4 electrons (as well as O2, the oxygen eudicots require for survival).
- Master of Science in Biology
- Bachelor of Science
natagold Author
wrote...
11 years ago
Thanks
wrote...
Staff Member
11 years ago
Could you update us with the answers you ended up putting?
- Master of Science in Biology
- Bachelor of Science
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