BIOL 1541L Lecture Notes - Lecture 1: Nervous Tissue, Human Musculoskeletal System, Photosynthesis

• School: University of Arkansas
• Department: Biology
• Course: BIOL 1541L
• Professor: John Shadwick

Document Summary

Section 1. 1 notes: life is organized (the hierarchy of levels, atom: smallest particle of an element. Trees, humans, and other organizations, atoms join together to form molecules. Molecules: 2 or more atoms joining together of the same element. Multicellular organisms, the cell is the smallest structural and functional unit. Tissue: a group of similar cells that perform a particular function. Nervous tissue has millions of nerve cells transmitting signals all over the body: organ: two or more tissues join together. The main organ that receives signals from the nerves is the brain. Ex: trees & humans are a collection of organ systems: levels of biological organizations, species: group of similar organisms capable of producing fertile offspring. Population: group of organisms of the same species in a certain area sharing a common gene pool. Ex: tropical grassland having a population of humans, zebras, and acacia trees. Community: one species interacting with another within the same environment.