Cycling of P&S, Redox reactions, Electron transport chains, Introduction to photosynthesis Flashcards
What is Phosphorous important for?
Nucleotides (ATP), Nucleic Acid polymers (DNA/RNA), Phospholipids (Plasma Membrane)
What is the cycle of phosphorous?
- Plants incorporate P from sediment
- Animals eat plants
- Plants/animals die and decomposers return P to
sediment - Plants incorporate it again & the cycle begins again
What is Sulfur important for?
Found in certain amino acids (proteins), critical for protein folding
What is the cycle of sulfur?
- Plants incorporate S from sediment
- Animals eat plants
- Plants/animals die and decomposers return S to the
sediment - Plants incorporate it again & the cycle begins again
When do Redox Reactions occur?
when molecules gain or lose electrons
OIL RIG
Oxidation Is Loss (The loss of electrons, Reduction Is Gain (The gain of electrons)
Reduction/Oxidation rxns are _______.
coupled
Electron Transport Chain (ETC)
A chain of redox reactions results in a “flow” of
electrons
Electron carriers
Accept electrons (become reduced) and donate electrons (become oxidized)
irst EC in an ETC has the ________ affinity for e- ’s
lowest
The last EC in an ETC has the ______ affinity for e- ’s
most
What powers the production of glucose?
Light Energy
What is the efficiency of the energy transfer of light energy to glucose?
30%
Thylakoid membranes
contain the pigments (chlorophylls) that capture light energy
Stroma
is where glucose is made