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Biology (111) Exam 2

Chapters 2-6

TopicInformation
Chemical Evolution Theory -Leading scientific explanation for the origin of life. - In addition to small molecules, complex carbon-containing substances exist and are required for life. -simple compounds --> chemical reaction --> more complex carbon containing molecules.
Chemical Reactions -Atoms are combined to form molecules. -Molecules are atoms joined by covalent bonds. -Small molecules into bigger molecules. -One substance is broken down into another substance (digestion). -In most cases bonds are broken and formed at the SAME TIME
Chemical Reactions -Atmosphere or underwater. -Water vapor, C02, and Nitrogen --> released into atmosphere by volcanoes. -Molecular hydrogen and carbon monoxide could've been present. -Undersea volcanic activity (deep sea vents ) could've been an option. -NO OXYGEN.
Chemical Reactions
Created by: elanapennello