BIOL 1201 Lecture Notes - Eukaryote, Subatomic Particle, Plant
Document Summary
A change in genetic makeup of a population over time as a result of natural selection: two traits: 1. Competition for food, resources, mates etc: ex: giraffes with longer necks survived, b/c they were able to reach the food (leaves). Trees became taller, and the necks of the giraffes became longer. More good genes survive; therefore, population changes: order. Life contains order of structural levels with each level building on the levels beneath it. Property that emerges as a result of interactions between components as complexity increases. Anatomy dictates tasks animals perform: ex: plants" leaves = thin and flat to maximize sunlight absorption, hammer shaped to perform specific function; shape is different from a screwdriver. Cells- basic units of function, structure, life: prokaryotic- lack internal cellular membranes (no nucleus or organelles, eukaryotic- membrane-enclosed nucleus and organelles, cell division = basis for reproduction, growth, and repair of multicellular organisms, dna. Ability to maintain structure and regulate internal environment.
