Biology 1010 1st Edition Lecture 1Outline of Current Lecture I. Biology Is The ScientificII. Life Can Be Studied At Many LevelsCurrent LectureI. Biology Is The Scientific - Biologists recognize life through a series of properties shared by all living things.- Biologists examine something to be living only if it displays all of these characteristics.1) Reproduction: all organisms reproduce their own kind2) Growth (unicellular/ multicellular organisms): information carried by genes controls the pattern of growth in all organisms-Cells: all living organisms consist of cells (fundamental unit of life)3) Ability to obtain and use energy: every organism takes in energy, converts it to useful forms, and expels energy-Energy: the ability to do work (obtained through food, harnessing sunlight {plants})-Metabolism: involves all chemical reactions that convert energy into usable forms (sum total of all chemical reactions needed)-Order: each living thing has a complex but well-ordered structure4) Homeostasis: maintaining of a relatively constant internal environment-All organisms respond to changes I the environment. Many of these responses help to keep an organism’s internal environment within narrow limits.5) Sense and response to stimuli: organisms respond to stimuli in many ways-move towards a food source-moves away from a threatening predator -Evolution: individuals with traits that help them survive and reproduce pass the genes for those traits to offspring, driving the evolution of populationsII. Life Can Be Studied At Many LevelsThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- Biosphere: consists of all life on earth- Ecosystem: consists of the living and non-living components- Community: consists of all the interacting populations in an ecosystem- Population: is a group of interacting individuals of one species- Organism: is an individual living being- Organ system: is a group of organs that work together- Organ: consists of multiple tissues that cooperate to perform a specific task- Tissue: is an integrated group of similar cells that work together- Cell: is the fundamental unit of life- Organelle: is a component of the cell that performs a specific function- Molecule: a group of atoms bonded together- Atom: the fundamental unit of
View Full Document
Unlocking...