BIOM 2000 Midterm: MIDTERM 1 REVIEW
5 Oct 2016
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Levels of structural organization: chemical level, atoms and moleculs, carbon, hydrogen, nitrogen, phosphorus and oxygen, hemoglobin c. i. Carrie soxygen to blood: glucose (blood sugar, vitamins, cellular level, combination of molecules, cells b. i. Largest level of organization: all of the systems combined make an organism. The body communicates through neural and hormonal control systems: receptor (sensor + integrator) Sends information to control center: control center. Provides a means for response to the stimulus. Negative feedback: includes most homeostatic control mechanisms, shuts off the original stimulus, or reduces its intensity, works like a household thermostat. 96% of the body is made from four elements: carbon (c, oxygen (o, hydrogen (h, nitrogen (n) Inorganic compounds: lack carbon, tend to be simpler compounds, include water, salts, and some acids and bases. Skeletal structure: most are covalently bonded, include carbohydrates, lipids, proteins, nucleic acids, atp. Water: most abundant inorganic compound in the body.
