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Cellular Respiration V. Photosynthesis (Chapter 9 & 10)

CellularRespiration

C6H12O6 + 6 O2

6 CO2 + 6 H2O +

Energy (ATP)

It produces 38ATP in total

It is a catabolic

reaction;exergonic,

decrease in freeenergy

Glycolysis (substrate levelphosphorylation)

Krebs Cycle (Citric Acid Cycle)(Substrate Level Phosphorylation)

Electron Transport Chain/ OxidativePhosphorylation.

1.) Splits glucose into two

molecules ofG3P .

2.) NAD+

reduces with theaddition ofelectrons and along

with an H+ molecule and turns

into NADH .3.) The energy released from

NAD+ combining with

electrons is used to attach two

phosphates to two ADP with

substrate phosphorylation.4.) 2 H2O leaves the G3P and two

phosphates from G3P attachto two ADP making pyruvate

Before pyruvate can go throughthe Krebs cycle, it must change. 2

more NADH are made from theloss ofCO2of the pyruvate(which results in Acetyl coA1)

1.) Acetyl coA enters thematrix

2.) Acetyl coA gives up twoCO2

3.) H combines with electrons

to NAD+ and FAD4.) ADP + P=ATP

It turns twice perglucose

1.) The products of Glycolysis and Krebscycle donate theirelectrons that go

towards oxygen.2.) The H+ left from the products (after

electronsleave-anabolic part) transfer

into the inner membrane space from thematrix against their concentration

gradient. This creates potential energy.[NAD+ and FAD return to cycle]

3.) H+ diffuses through the protein ATP

synthase. (called chemiosmosis)4.) As step three happens, ADP and

organic P are phosphorylate into ATP

Every NADH makes 3 ATPEvery FADH2 makes 2 ATP

Location: Cytosol Location: Mitochondria matrix Location: Mitochondria Inner Membrane(cristae)

What it needs Products What it

needs

Products What it needs Products

-2 ATP

-Glucose

-2 netATP

-2 NADH-2 H2O

-2 Pyruvate

-2 pyruvate

(2 AcetylcoA)

-6 NADH

-2 FADH2-2 ATP

-6 CO2

-10 NADH

-2 from glycolysis-2 from oxidation of

Acetyl coA-6 from Krebs-2 FADH2 from Krebs

-O2 (to attract products)

34 ATP

4 H2O

Photosynthesis Light dependent Cycle Calvins Cycle

1.) Electrons ripped off of H2O to replace electrons lost in CO2 bonds to RuBP (starter molecule) with the help of the

3 carbon sugar H+ and two electrons together reduce the electron carriers1 Acetyl coA is a lipid

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7/29/2019 Cellular Respiration v Photosynthesis

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Cellular Respiration V. Photosynthesis (Chapter 9 & 10)

6 CO2 +

12 H2O+light energy

C6H12O6 +6 O2 +

6 H2O

AnabolicReaction-

consumesenergy,

endergonic,increases energy

Creates glucosefor cellular

respiration

Photosystem II (step 2)

2.) Electrons from photosystem II get excited and move

down to photosystem I to replace electrons lost in

step 3.

3.) Electrons from photosystem I passes throughElectron Transport Chain and add to NADP+alongwith an H+ molecule goes against its concentration

gradient to form NADPH with the help of an enzyme(chemiosmosis)

4.) As step two happens, the energy of electrons moving

to PS I cause H+molecules to move from stroma toThylakoid compartment building potential energy.

5.) H+ molecules diffuse through ATP synthase6.) The movement ofH+builds enough energy to

combine ADP and P to make ATP.

enzyme Rubisco to form G3P.1.) ATP molecules from Light dependent cycle attach to

G3P molecules. (creates ADP)2.) NADPH molecules donate electrons (creates NADP+,

also loses P) creating high energy G3P moleculesThe energy ofelectrons makes G3P

Some G3P is recycled in the cycle, but the rest is convertedinto organic molecules

-It takes 2 G3P to make glucose

What it needs Products What it needs Products

-H2O-Light

-NADPH-ATP

-O2

-NADPH from earlierreaction

-ATP from earlier reaction

-CO2-RuBP

-Glucose(depending on what the cell

needs)

-Proteins -Starches-Lipids -Sugars

Location: thylakoid membranes of the chloroplast Location: stroma of the chloroplast.

Photosystems are pigments

, primarily chlorophyll (chlorophyll a, chlorophyll b, and antenna/accessory pigments)molecules that absorb, reflect, or transmit light 5-carbon intermediate that attaches to CO2

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