ÅH SECTl0f'¡ 5.5 Date Perlod Name ' MULTICELLULAR LIFE Study Guide KEY CONCEPT Cells work together to carry out tissue organ system complex functions. 0rgan cell differentiation VOCABULARY stem cell MAIN IDEA: Multicellular organisms depend on interactlons among different cell types. Complete the diagram below that represents organization in multicellular organisms, Gells make up 4. +> tissues make organs up make up organ systems List two examples of tissues found in plants photosynthesis tissue; conductive tissue(e.g. xylem); protective tissue 5. List two examples of organ systems found in plants. shoot system; root system 6. How does an organism benefit from organ systems that work together and communicate? These systems help organisms carry out complex, specialized functions and maintain homeostasis. > c G o_ c ()o .c E MAIN IDEA: 7. What is the process by which unspecialized cells develop into specialized cells? cell differentiation c Ío -o : o) l 8. o) = oo Do different types of cells have different DNA? Explain, No. All cells have the same DNA, but different types of cells express different sets of genes. 0) E Specialized cells perform specific functions. 9. What role does cell location play within a developing embryo? The location helps determine how the cell will differentiate o =o) oo (.) Unit 2 Resource Book McDougal Littell Biology Study Guide 8t I)atc Pcriod Na¡nc STUDY GUIDE, CONTINUED MAIN IDEA: Stem cells can develop into different cell types. Complete the concept map below about stem cell classification, Stem cells can be SS ed by potential e,g e origin e,g adult e,g. e totipotent pluripotent multipotent emryonic 1O, List the three identifuing characteristics of stem cells. divide and renew themselves for long periods of time; remain undifferentiated in form; develop into a variety of specialized cell types. 11. List one advantage of using adult stem cells and one advantage of using embryonic stem cells, Adult stem cells could avoid rejection issues and does not raise as many ethical concerns. Embryonic stem cells can develop into virtually any type of cell and can be grown indefinitely in culture. c I E Vocabulary Gheck O .E 12. What is cell differentiation? The process by which an unpecialized cell becomes specialized. 5 c o co) f 13. Write the following words in order from the largest structure to the smallest structure: cell, organ, organ system, tissue Organ system, organ, tissue, cell -o õ : P õo) a o ôo @ I o) 'tr o- oo 82 Study Guide Unit 2 Resource Book McDougal Littell Biology