BIOL 305 : biol 305 quiz 1 SG
Document Summary
Atomic composition: chonp - living things are composed primarily of hydrogen, carbon, oxygen, nitrogen and phosphorous. Living things possess dna inherited coded instructions (genes) for forming structures from raw materials. Reproduction and development: formation of offspring by parental organisms, following instructions in dna inherited by ancestors, in fidelity to developmental programs. Inheritance: the passing on of genetic instructions from generation to generation, incorporating variation due to mutations. Cell-based: all living things are composed of cells, which are derived from pre-existing cells all the way back to the time of the first living cell. Metabolism: a constant activity of all living cells - extracting energy and raw materials from the environment and using it to carry out maintenance, growth and reproduction - living things constitute open, non-equilibrium. Homeostasis: living things expend energy in order to maintain a stable internal environment. Irritability: living things are capable of sensing and responding to stimuli from their external and internal environments.
