BSC 1011 Chapter Notes - Chapter 1: Positive Feedback, Null Hypothesis, Systems Analysis
Document Summary
Bsc 1011 - textbook chapter 1 - principles of life. Similarity of life allows for generalization from model systems (if one organism"s cell does this, we can assume others do too) Fatty-acid membranes surrounded complex proteins and other molecules. Some organelles were once individual cells /(mitochondria and chloroplasts) Multicellularity allowed for specialization (size and efficiency increased) small molecules larger molecules cells tissues organs organ systems organisms organisms populations community landscape biosphere. A simple biological system consists of components and their processes. Positive feedback : product of a system speeds up an earlier process. Negative feedback : a product of a system slows down an earlier process. Systems analysis : identify parts of biological system & specify processes of interactions. Also finds rates of processes and effects of feedbacks. Genomes encode proteins that govern organism"s structure. Mutations can occur by certain chemicals and radiation. About 2,000 genes in the human genome.
