Science Grade: 10th SCI.III.1.1 Strand III: Using Scientific Knowledge in Life Science Standard 1: Cells - All students will apply an understanding of cells to the functioning of multi-cellular organisms, including how cells grow, develop, and reproduce. Benchmark 1: Explain how multi-cellular organisms grow, based on how cells grow and reproduce. Constructing and Reflecting: SCI.I.1.1- Ask questions that can be investigated empirically. SCI.I.1.2- Design and conduct scientific investigations. SCI.II.1.1- Justify plans or explanations on a theoretical or empirical basis. Vocabulary Context • • • • • • • • • • • • • • • • • • • • • • • Respiration Protein synthesis Mitosis Meiosis Simple sugars Amino acids Fatty acids Water Minerals Carbohydrates Fats and lipids Nucleic acids Carbon Hydrogen Oxygen Nitrogen Cell theory The growth of plants and animals (e.g. onion) Cancer Growth Reproduction Fertility Paternity Testing Blood Transfusions Resources Knowledge and Skills Students will: • Apply the cell theory: the cell is the basic unit of life and comes from preexisting cells. • Explain mitosis, meiosis, and differentiation, and how they relate to growth in a multi-cellular organism. Coloma Resources: Glenco Biology – Section 6.3 & Chapter 9 Enzyme Lab pg. 164 Other Resources: • • • Explain that respiration provides energy for making cell components. • • Describe how the chemical composition of cells originates from • outside the cell, such as the products of digested food, and are used as the building blocks by the cell to synthesize • more complex chemicals. Show how growth of multi-cellular organisms is the result of an increase in the number of cells, not just a change in their size. ScoPE Unit Plan – Cell Structure http://www.cellsalive.net/ Cell photos http://library.thinkquest.org/3564/ Cell types http://biologylessons.sdsu.edu./classes/lab8/lab8.html Mitosis Pictures • Teacher’s Domain – all Cell Lessons – excellent videos, interactives and images. Awesome site! (go to life science 9-12) • DiscoverySchool – Human Body Lessons for HS. Excellent! • • REMC 11 Videos- Use the following website: www.remc11.k12.mi.us Michigan Teachers Network Resources • • • • Models Microscopes Prepared Slides Diagrams • Textbooks & Supplemental Resources Other Resources:(continued from column at right) Videoconferences Available For more information, see www.remc11.k12.mi.us/dl or call Janine Lim 471-7725x101 or email jlim@remc11.k12.mi.us III.1.HS.1: • Cloning and Stem Cells from Hook’s Discovery and Learning Center • Space Farming from NASA Johnson Space Center (photosynthesis) REMC Materials: • III.1.HS.1 Explain how multi-cellular organisms grow, based on how cells grow and reproduce. Vernier probes available: O2 Gas Sensor, Gas Pressure Sensor Instruction • • • • Give a written description and include a visual (e.g. picture, diagram, etc.) of how size limits the efficiency of cells to move basic molecules for cell growth. Relate how molecules moving in and out of the cell affect the life span of a cell. Corresponds to standard I.1.4 Assessment Optional Assessment • Use shoes to model the phases of mitosis for pairing, aligning, and separating of the chromosomes. • Make a poster or collage to differentiate between the phases of mitosis using yarn and other craft materials. • Vocabulary Quiz on the names and functions of chromosomes, chromatids, etc… Use potato cubes of different sizes soaked in iodine (Lugal’s solution) for a • Microscope Lab Test to Identify the Phases of Mitosis set time. Remove cubes and slice in half to show how far the iodine entered • The teacher will give students a written description and include a visual (e.g., picture, diagram, etc.) of how size the cube. Associate this movement of limits the efficiency of cells to move basic molecules for cell iodine with the movement of essential growth. Students will write a description that relates how materials moving in and out of a cell. molecules moving in and out of the cell affect the ability of a The smaller the cell the more efficient cell to function. (Give students rubric before activity.) the movement of materials is for the Criteria Apprent. Basic Meets Exceeds whole cell. The more efficient the movement of materials is for the whole Accuracy Explains Explains Describes Describes cell the more efficient the cell becomes. of the some the the concepts concept concepts but relationship relationship Corresponds to standard I.1.2 Examine the white fish blastula & the onion root tip under the microscope. Draw and label sketches of the stages of mitosis. (Can be ordered from ER30-8946) Use colored toothpicks to represent chromosomes undergoing meiosis, pipecleaners represent the cell membrane. Students model the reduction division of chromosomes from 46 to 23. but in a not the vague and relationship. incomplete way. between material movement and cell function. with an example or added relevant information. Complete ness of explanation Explains without supporting details. Explains with partial supporting details. Explains with related details from the activity. Explains with details from the activity and relates to basic molecules. Effectiven ess of visuals Explains without a visual. Explains with a visual; missing some components. Explains with an accurate and complete visual. Explains with additional examples of visuals. Explains with partially correct vocabulary and grammar. Explains with appropriate vocabulary and grammar. Explains with extended vocabulary and complex sentences. CorrectExplains ness of with mechanics inappropriate vocabulary or grammar. ** Cell cycle concept map (make rubric) Teacher Notes: Focus Question: Why are multi-cellular organisms made of many small cells instead of one large cell? Mind-Map Comparing Stages of Meiosis and Mitosis - excellent resource for organizing and presenting graphically - Visual Learning Techniques - Graphic Organizers, Mind Maps, and Flowcharts Apply an understanding of cells to the functioning of multicellular organisms including how cells grow, develop and reproduce Although most cells are too small to see with the unaided eye, learning about these units of life is central to our understanding of all organisms. It is through the study of cells that biologists have come to understand and interpret the unity that underlies the great diversity of living things. Biologists sometimes express their understanding of this unity in terms of the Cell Theory: 1) all organisms are composed of cells; 2) all cells arise from preexisting cells; and 3) the cell is the basic living unit of organization of all organisms. Of these three principles, currently in the summer of 2001, none are assigned to the elementary level articulation of the Michigan Curriculum Framework Science Standards and Benchmarks. In middle school the benchmarks address the concept that all organisms are composed of cells and that cells are the basic living unit of organization. With the use of tools such as the hand lens and microscope, common living things can be found to be made up of cells. It becomes increasingly important for the explanation of why and how selected specialized cells are needed by plants and animals since students often think incorrectly that there are only those two types of cells….plant and animal. The specialization of functions that cells perform will dictate their actual form....i.e. comparison of a red blood cell to a striated muscle cell. In high school, students have difficulty discriminating between cell division, growth/enlargement, and differentiation. Living things do not simply get larger due to cells growing larger. Growth of the organism is the result of cell division and resulting increase of number of cells. The actual trigger for cell division is the ratio of surface area of the cell to volume but total growth of the organism is not due to just bigger sized cells. Specialized cells and organelles carry out life functions and can be tied to actual classification of organisms by cell type. Scientifically literate high school students will be able to reason that cells specialize in order to efficiently divide or share the function needed to keep the organism alive. The differences in cell type form basic divisions in the way scientists classify living things.