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Worksheet+6+-+Answer+Key - 6CO 2 12H 2 O C 6 H 12 O 6 6O 2...

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Bio 93 Pooja Patel Worksheet 6 – Lecture 12 [email protected] Lecture 12 – Photosynthesis Energy flow: Sun Producers Primary Consumers Secondary Consumers Decomposers Autotrophs: make organic compounds Chemotrophs: obtain energy from sulfur, ammonia Phototrophs: obtain energy from light (do photosynthesis) o Land Plants: carbon dioxide, water o Oceans Eukaryotes: unicellular and multi-cellular algae Prokaryotes: cyanobacteria, sulfur bacteria Chloroplasts o Site of photosynthesis o Location: mesophyll cells in leaf interior o Structure: Double membrane Stroma: fluid surrounding grana in chloroplasts Thylakoids: membrane bound compartment in chloroplast; where light reactions occur Requirements for Photosynthesis o CO 2 : enters through stomata o H 2 O: absorbed through roots o Light Energy: captured by pigments in thylakoid membrane Redox Reaction for photosynthesis:
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Unformatted text preview: 6CO 2 +12H 2 O C 6 H 12 O 6 + 6O 2 + 6H 2 O o CO 2 will be reduced (Hs added - with electrons) o Water will be oxidized (Hs removed - with electrons) • NADP + is the electron transporter in photosynthesis (as opposed to NAD + in cell respiration) • Transfers electrons from light reaction to dark reactions • Chloroplasts use chemiosmosis to make energy (ATP) o Transform light energy into chemical energy (ATP) Step 1 of 2: Light Reactions • Chlorophyll molecules in thylakoid membrane absorb light • Different colored pigments captured different wavelengths of light • In: Bio 93 Pooja Patel Worksheet 6 – Lecture 12 [email protected] o H 2 O o Light • Out: o O 2 o NADPH o ATP Step 2 of 2: Dark Reactions (Calvin Cycle) • In: o CO 2 o ATP o NADPH • • Out: o ADP + P i o NADP + o G3P o RuBP...
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Worksheet+6+-+Answer+Key - 6CO 2 12H 2 O C 6 H 12 O 6 6O 2...

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