Biology

? 2017 Pearson Education, Inc. Lecture Presentations byNicole Tunbridge and Kathleen Fitzpatrick Chapter 10 Photosynthesis 1 The Process That Feeds the Biosphere Plants and other photosynthetic organisms contain organelles called chloroplasts Photosynthesis is the process that converts solar energy into chemical energy within chloroplasts Directly or indirectly, photosynthesis nourishes almost the entire living world Photosynthesis occurs in plants, algae, certain other unicellular eukaryotes, and some prokaryotes ? 2017 Pearson Education, Inc. 2 Autotrophs are ?self-feeders? that sustain themselves without eating anything derived from other organisms Autotrophs are the producers of the biosphere, producing organic molecules from CO2 and other inorganic molecules

? 2017 Pearson Education, Inc. Lecture Presentations byNicole Tunbridge and Kathleen Fitzpatrick Chapter 8An Introduction to Metabolism 1 The Energy of Life The living cell is a miniature chemical factory where thousands of reactions occur Cellular respiration extracts energy stored in sugars and other fuels Cells apply this energy to perform work Some organisms even convert energy to light, as in bioluminescence ? 2017 Pearson Education, Inc. 2 Concept 8.1: An organism?s metabolism transforms matter and energy, subject to the laws of thermodynamics Metabolism is the totality of an organism?s chemical reactions Metabolism is an emergent property of life that arises from orderly interactions between molecules ? 2017 Pearson Education, Inc. Enzyme 1 Reaction 1 Starting molecule