BIO 111 Lecture Notes - Lecture 1: Ph, Homeostasis
Document Summary
Chapter 1 powerpoint: august 23, 2016 class notes not on blackboard powerpoint. Adaptation: evolve over many generations by reproductive success of those best suited to environment. Regulation: maintain internal and external body conditions homeostasis (ex. Stimuli response: modify behavior based on what is occuring in environment. Growth/development: genes regulate patterns of growth and development (gene expression) Energy: chemical energy from nutrients to power cellular work. Figure 1. 3 exploring levels of biological organization. Biosphere: consists of all life on earth and all regions where life can exist. Ecosystems: all living and non-living things in a particular area. Communities: the diverse organisms that inhabit an ecosystem. Populations: all the individuals of a species in a defined area. Organs and organ systems: body parts that carry out a key function in the body; organs that cooperate are organized into systems. Tissues: groups of cells that work together to perform a specialized function. Cells: fundamental unit of structure and function.
