BIOCHEMISTRY OF HYDROTHERMAL VENTS 1 Assign the following

BIOCHEMISTRY OF HYDROTHERMAL VENTS 1. Assign the following roles: Director, Secretary, Timekeeper and Analyst. 2. Read the collaborative work rubric and the document. 3. In a flip chart, place in order of occurrence the photosynthesis and chemosynthesis events. On the bottom of each, write the chemical equation. 4. In a separate sheet of paper, answer these questions: • What similarities you notice between photosynthesis and chemosynthesis equations? • Why is chemosynthesis in hydrothermal vents important to both autotrophic and heterotrophic organisms? • How do chemo- and photosynthesis processes affect your life?

ANSWERS 1. Both use carbon dioxide (CO 2) and water (H 2 O) to produce glucose (C 6 H 12 O 6). 2. These equations represent the mechanisms by which autotrophs create their own energy. These processes are important to heterotroph because the heterotroph rely upon autotrophs for energy. 3. This affects ours lives because as heterotrophs, we are ultimately dependent upon autotrophs for nutrition. Besides this, we as humans produce the waste gas, carbon dioxide and in turn, autotrops helps us by removing carbon dioxide.

Producers Consumers AUTOTROPHS MAKE their own food using carbon from molecules and energy from the environment Chemoautotroph: use chemical compounds Photoautotroph: uses sunlight HETEROTROPHS ARE PART OF THE FOOD WEB OBTAIN their energy and carbon from organic compounds produced by other organisms by eating them.