Bio 1.1.3 Explain how instructions in DNA lead to cell differentiation and result in cells specialized to perform specific functions in multicellular organisms.
1. Compare a variety of specialized cells and understand how the functions of these cells vary. Match these cells with their functions: Nerve cells 1. Vascular tissue in plants that carries water. Muscle cells 2. Vascular cells that carry oxygen and nutrients and fight disease. Blood cells 3. Cells which send impulses back and forth to the brain and spinal cord. Sperm cells 4. Vascular tissue in plants that carries food. Xylem 5. The male gamete. Phloem Cells which flex and extend (contract) to allow movement.
2. Multicellular organisms begin as ¬¬¬¬_______________ masses of…show more content… During the process of differentiation, are all parts of the DNA activated?
Which parts of the DNA are activated and what do they determine?
4. Do all cells in an organism contain the same DNA?
5. Do all cells initially have the potential to become any type of cell?
6. What is the process in which the cell becomes specialized for its particular job? (choose one)
a. Crossing over b. Differentiation c. Natural selection
7. Can cell differentiation be reversed?
8. Do all of the cells of a multicellular organism have exactly the same chromosomes?
9. Know this: Different parts of the genetic instructions are used in different types of cells, influenced by the cell's environment and past history.
10. Can chemical signals be released by one cell to influence the development and activity of another cell?
Give an example.
11. What is the name for cells which have not yet differentiated into various cell types? (choose one) a. Blood cells b. Bone marrow cells c. Stem cells
12. List 3 types of Adult Stem Cells.
13. How are Embryonic stem cells different from Adult Stem Cells?
Bio 1.2.1 Explain how homeostasis is maintained in a cell and within an organism in various environments (including temperature and
