Cycling of P&S, Redox reactions, Electron transport chains, Introduction to photosynthesis Flashcards

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1
Q

What is Phosphorous important for?

A

Nucleotides (ATP), Nucleic Acid polymers (DNA/RNA), Phospholipids (Plasma Membrane)

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2
Q

What is the cycle of phosphorous?

A
  1. Plants incorporate P from sediment
  2. Animals eat plants
  3. Plants/animals die and decomposers return P to
    sediment
  4. Plants incorporate it again & the cycle begins again
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3
Q

What is Sulfur important for?

A

Found in certain amino acids (proteins), critical for protein folding

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4
Q

What is the cycle of sulfur?

A
  1. Plants incorporate S from sediment
  2. Animals eat plants
  3. Plants/animals die and decomposers return S to the
    sediment
  4. Plants incorporate it again & the cycle begins again
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5
Q

When do Redox Reactions occur?

A

when molecules gain or lose electrons

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6
Q

OIL RIG

A

Oxidation Is Loss (The loss of electrons, Reduction Is Gain (The gain of electrons)

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7
Q

Reduction/Oxidation rxns are _______.

A

coupled

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8
Q

Electron Transport Chain (ETC)

A

A chain of redox reactions results in a “flow” of
electrons

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9
Q

Electron carriers

A

Accept electrons (become reduced) and donate electrons (become oxidized)

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10
Q

irst EC in an ETC has the ________ affinity for e- ’s

A

lowest

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11
Q

The last EC in an ETC has the ______ affinity for e- ’s

A

most

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12
Q

What powers the production of glucose?

A

Light Energy

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13
Q

What is the efficiency of the energy transfer of light energy to glucose?

A

30%

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14
Q

Thylakoid membranes

A

contain the pigments (chlorophylls) that capture light energy

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15
Q

Stroma

A

is where glucose is made

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16
Q

Light Reactions (light dependent rxns)

A

Occur at the thylakoid membrane

17
Q

What do light reactions require?

A

Light, H2O

18
Q

What do light reactions produce?

A

ATP, NADPH, O2

19
Q

Dark Reaction (light independent rxns, also called the
Benson Cycle)

A

Occur in the storma

20
Q

What do dark reactions require?

A

CO2, ATP, NADPH

21
Q

What do dark reactions produce?

A

Glucose, ATP, NADP+