Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download ch7iv-Use This 3rd
Document related concepts
Transcript
IV. The Diversity of Cellular Life A. Unicellular Organisms --Single-celled Organisms that do all a living thing would ----They dominate life on earth in terms of numbers B. Multicellular organisms • Multicellular organisms – Made up of many cells – Depend on communication and cooperation between specialized cells ---_______________-cells throughout organism can develop in different ways to perform different tasks Cell specialization • • • • 1. Specialized animal cells – eg. Red blood cells equipped to carry oxygen ;cells specialized to produce proteins produced in pancreas(have many ribosomes and rough ER);muscle cells have actin and myosin cytoskeleton elements for contraction 2. Specialized Plant cells ______________________-are tiny openings on underside of leaves and exchange gases _____________________-regulate gaseous exchanges in stomata,changing shape due to plant’s internal conditions • stomata Guard cells C. Levels of Organization – 1. individual cells – 2. _____________________-group of similar cells w/ particular function – 3. ______________-group of tissues working together – 4. ______________-group of organs working together for particular function • tissue organ Organ system Levels of Organization Section 7- 4 Muscle cell Go to Section: Smooth muscle tissue Stomach Digestive system
