Chapter6Sum07

Chapter6Sum07 - Energy-Releasing Steps ATP PGAL PGAL ATP...

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Unformatted text preview: Energy-Releasing Steps ATP PGAL PGAL ATP NADH NADH ATP ATP 2 ATP invested ENERGY-RELEASING STEPS OF GLYCOLYSIS 2 ATP invested NAD + P i NAD + P i 3-phosphoglycerate 3-phosphoglycerate 2-phosphoglycerate 2-phosphoglycerate PEP PEP ADP ADP 1,3-bisphosphoglycerate 1,3-bisphosphoglycerate P P P P P P P P P P pyruvate pyruvate to second set of reactions substrate-level phosphorylation substrate-level phosphorylation H 2 O H 2 O ADP ADP Photosynthesis – Chapter 6 How do plants protect themselves from the sun? On land, plants such as oak trees and cacti are the predominant producers Oak tree Cactus In aquatic environments, algae and photosynthetic bacteria are the main food producers Kelp, a large alga Photosynthetic bacteria in a pond Ancients thought plants ate soil Van Helmont in 1600’s showed no loss in soil weight as a seedling grew By 1700’s it became known that plants needed something from the atmosphere Photosynthesis Plants need??? Water CO 2 Sunlight Soil What is released during Photosynthesis? John Priestly’s observation in 1772: After some time, the candle burned out. After a waiting period, a candle could be burned again (without introducing outside air) A mouse could survive in the jar too, it did NOT suffocate! A candle could be burned in a jar with a small plant Where does the oxygen come from? p.92b LIGHT REACTIONS: Light dependent. Convert light energy to chemical energy. (Photo) DARK REACTIONS: Light independent and use chemical energy to synthesize organic compounds such as glucose. p.93b Light reaction overview: p.93c Light-independent reaction overview: An overview of photosynthesis Figure 7.5 Light Chloroplast LIGHT REACTIONS (in grana) CALVIN CYCLE (in stroma) E l e c t r o n s H 2 O O 2 CO 2 NADP + ADP + P Sugar ATP NADPH • Photosynthesis is the process by which autotrophic organisms use light energy to make sugar and oxygen gas from carbon dioxide and water AN OVERVIEW OF PHOTOSYNTHESIS Carbon dioxide Water Glucose Oxygen gas PHOTOSYNTHESIS A leaf is a solar collector that traps energy and then photosynthesizes Leaf Anatomy Cuticle Stomata Vascular bundles The location and structure of chloroplasts...
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Chapter6Sum07 - Energy-Releasing Steps ATP PGAL PGAL ATP...

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