BSCI 106 Chapter Notes - Chapter 1: Cell Nucleus, Photosynthesis, Positive Feedback
6 Nov 2016
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1. 1: living organisms share common aspects of structure, function, and energy flow. The overwhelming evidence for the common ancestry of life lies in the following characteristics that are shared among living organisms: Are composed of a common set of chemical parts, such as nucleic acids and amino acids, and similar structures, such as cells enclosed within membranes. Depend on intricate interactions among structurally complex parts to maintain the living state. Contain genetic information that uses a nearly universal code to specify how proteins are assembled. Convert molecules obtained from their environments into new biological molecules. Extract energy from the environment and use it to carry out life functions. Replicate their genetic information in the same manner when reproducing themselves. Share structural similarities among a fundamental set of genes. Evolve through gradual changes in their genetic information. Nucleic acids: molecules that could reproduce themselves and also contain the information for the synthesis of large molecules with complex but stable shapes.
