BIO 143 Study Guide - Fall 2018, Comprehensive Midterm Notes - Protein, Dna, Chromosome
12 Oct 2018
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Science is a human endeavor: scientific theories. Evolution: the unifying theory of biology: categorizing life. Scientists have several hypotheses as to how life on earth first arose, but are. Actively maintain organized complexity composed of cells; maintain homeostasis) Homeostasis: organisms must keep the conditions within their bodies constant; maintain homeostatic. For example, maintain proper body temperature via sweating, dousing oneself with cool water; metabolizing more food in cold weather; basking in the sun adjusting the thermostat, etc. Living things respond to stimuli: organisms sense and respond to internal and external environmental stimuli. Sensory organs and muscular systems in animals detect external stimuli such as light, sound, touch, etc. Internal stimuli in animals are perceived by receptors for stretch, temperature, pain, and various chemicals. Plants and bacteria also respond to stimuli (i. e. , plants to light and bacteria to appropriate nutrient medium) Living things acquire and use energy: materials and energy are required to maintain organization, grow, and reproduce.
