BIOL 111 Lecture Notes - Lecture 1: Cellular Respiration, Spontaneous Generation, Cell Membrane

• School: McGill University
• Department: Biology
• Course: BIOL 111
• Professor: Rudiger Krahe

Document Summary

Bios (life) + logos (reason) = the science of life. There are 6 general things (note how breathing is not a requirement: reproduction, energy use, consists of cells. Cell theory: all organisms are made of cells and all cells come from pre-existing cells. Cell: a highly organized compartment that is bound by a thin, flexible structure called a plasma membrane and that contains concentrate chemicals in an aqueous (watery) solution. Previous to louis pasteur"s broth experiment, there were two warring theories: Cells are produced only when pre-existing cells grow and divide: contains dna/rna. Organisms possess hereditary or genetic information, encoded in genes: can evolve. Theory of natural selection: species change through time because individuals with certain heritable traits produce more offspring than other individuals (fitness: can respond to environmental change. For many biologists, to be living requires the doing of the big three: energy transformation (organisms use energy to do work)