Biology 1406 Chapters 1-4 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTION

7 characteristics of living things - Order, evolutionary adaptation, regulation, reproduction, response to enviorment, growth and development, energy processing Biological organization (largest to smallest) - Biosphere, ecosystem, communities, populations, organisms, organs and organ systems, tissues, cells, organelles, molecules Compare and contrast emergent properties and reductionism - Emergent properties- new properties that arrive w/ each step up in hierarchy of life, complexity increases reductionism- the reduction of complex systems to simpler components Describe the two major dynamic processes of life. What is the ultimate source of energy? - 1. Cycling of Nutrients 2. One-Way Flow Energy (from sunlight to producers to consumers) Sunlight What is the fundamental unit of life? - Cell Distinguish between prokaryotic and eukaryotic - Prokaryotic- simpler, smaller, no nucleus of other membrane bound organelles Eukaryotic- has membrane enclosed organelles, larger, nucleus Describe basic structure and function of DNA - Structure- made up two long double helix chains of nucleotides Function- controls development and maintenance of organisms Positive feedbaxk - Process to create product speeds up Negative feedback - Process to create product lows downKey theme of biology - Evolution