BIOL 1001 Chapter : Chapter 1 Bio Notes
Document Summary
Chapter 1: an introduction to life on earth: what is life, respond to stimuli, reproduction, growing, adapting, organisms share common characteristics that taken together define life. In order to have something alive, it has to have all the included characteristics. Less than one percent of energy of the sun is used to power all life on earth: plants use energy from the sun through photosynthesis, co2 + h2o glucose + o2 (what we take in) Specific segments of dna: basic unit of heredity, mutation occur when changes in genes are mistakenly copied, can result from dna damaged by, ultraviolet rays, toxic chemicals. Figure 1-10: atoms make molecules make cells make tissues make organs make organ systems make multicellular organisms make populations make species make communities make ecosystems make biospheres (the entire earth) Figure 1-11: three domains, prokaryotes- before nucleus * (simple, unicellular, lack organelles, anucleated, bacteria, archaea, eukaryotes (complex, multicellular, unicellular, have nucleus/organelles, animalia, plantae.
