BIOL 1001 Chapter : Chapter 1 Notes
Document Summary
Bio = life logy = the study of. Quality that distinguishes life from non-life (dead and inorganic comp: we define life with a set of characteristics shared by all living organisms. To be alive an organism must: respond to stimuli: composed of cells, maintain homeostasis, convert materials and energy, grow, evolve reproduce. 1mm- complex and organized: living organisms are composed of cells that have a complex, organized structure. The cell is the smallest unit of life: living organisms maintain homeostasis. Homeostasis = to stay the same : enables organisms to cope with changes in their environment, living organisms respond to stimuli. Internal and external stimuli: external stimuli light, sound, touch, chemicals, etc. Energy is acquired from sun by photosynthetic organisms and transferred through organisms that eat other forms of life. The giraffes with longer necks were more likely to survive and reproduce. All identified life forms possess these seven characteristics.
