Human Biology 1: Life and Science

Notes

Exploring Human Biology and Science Nermin Eissa, Ph.D. College of Health Sciences Abu Dhabi University Fall-2026 Learning Outcomes: • Comprehend the basic characteristics common to all living organisms. • Describe the levels of organization of life. • Classification of living organisms. • Determine the general process of the scientific method. Activity: https://edpuzzle.com/media/5f4cef8267b9f93f724ffb1e ©2020 McGraw-Hill Education 2 LIFE IS ORGANIZED Levels of biological organization: • Atoms join together to form molecules. • Cell—smallest structural and functional unit of an organism. • Some organisms are single-celled; some, like humans, are multicellular (composed of many cells). • Tissue—group of similar cells that perform a particular function. ©2020 McGraw-Hill Education 3 LEVELS OF BIOLOGICAL ORGANIZATION ©2020 McGraw-Hill Education Access the text alternative for these images 4 LIFE IS ORGANIZED2 • Organ—composed of several tissue types. • Organ system—group of organs that work together for a common purpose. • Organism—collection of organ systems. • Species—a group of interbreeding organisms. • Population—the members of one species in a particular area. • Community—inter...