Lecture #8 Respiration and big picture (might skip)

Question 1

What overall reactions occur in the Cytoplasm

Answer 1

-Lumen provides ATP through proton synthesis and ATP is used in the PCR cycle
-Lumen provides NADPH which feeds into PCR cycle to be oxidized

-PCR produces G3P and has a reversible reaction with DHAP = both can equal to Trisphosphate or (TP)

Multiple routes for TP:
1. Converted into PPP by getting rid of Pi and adding GluIP -> broken down into two elements NADPH and CO2
2. Converted into Gkucose, which is converted into starch with the added help of Hexose P
3. Exits out of the cyotplasm in exchange for a Pi to take its place

photosynthesis, starch formation, sucrose synthesis, and transport.

Question 2

What occurs in Mitochondria

Answer 2

1. Pyruvate goes through symporter with H+ and oxidized into CO2 and NADH.
2. However, CO2 + COA converts to Acetyl COA.
3. Acetyl COA + OAA, which is used in the Krebs cycle.
   - NADH is pumped out of the plasma membrane and H+ pumped into the intermembrane space.

Question 3

What occurs in the cytosol

Answer 3

1. TP converted to PPP -> broken down into CO2 and NADPH
2. Glycolysis: TP through a series of oxidation reactions:
   TP + NADP+ -> NADPH + BPG
   BPG + ADP + Pi -> ATP + 3 PGA -> PEP -> (Broken down) into malate and oxidized and converted to Pyruvate.
3. Gluconeogenesis
   - TP (reversable reaction and loss of Pi) Fru 1,6P
   - Fru 1,6P (loss of Pi) -> Suc 6P
   - Suc 6p (loss of Pi) -> Sucrose
   REVERSE REACTION
   Sucrose -> Fru + UDP Glu
   Fru + ATP -> Fru 6p and convertes to FRu 1,6P….
4. Fermentation
   Pyruvate goes under fermentation