* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Flow of Matter Group Work Project
Survey
Document related concepts
Tissue engineering wikipedia , lookup
Extracellular matrix wikipedia , lookup
Programmed cell death wikipedia , lookup
Endomembrane system wikipedia , lookup
Cell encapsulation wikipedia , lookup
Cell growth wikipedia , lookup
Cellular differentiation wikipedia , lookup
Cytokinesis wikipedia , lookup
Cell culture wikipedia , lookup
Transcript
Modeling the Flow of Matter from Food Cells to Our Cells Put yourself in the frame of mind to openly discuss ideas about science and what might be going on about things that we cannot see. •As a group you will work for the next two weeks to construct a model of your ideas on how matter flows from our food’s cells to our cells. At the end of this unit each of you will construct your own INDIVIDUAL models as the final product of this unit. • Remember to follow the rules of Deliberation: 1. Gather Knowledge to develop shared group knowledge toward solving a common problem. In this phase you’ll want to make sure you: A. Hear everyone’s ideas. B. Support each other to take risks in your thinking. C. Ask each other questions. D. Understand and offer different ideas. 2. Make a Decision on the course of action. In this phase not everyone has to agree on the ideas, but everyone needs to agree on which ideas to try out first. 3. Reflect on your course of action and Revise your ideas if necessary. ______________________________________________________________________________ Your group will need to work on the following ideas. Part 1 Research and decide on a meal (have fun!) that includes food items from or produced by: A. a plant B. an animal C. a bacterium, and D. either a fungus or a protist Example menu: a cheeseburger on a whole wheat bun whole wheat bun contains: • sugar and wheat from plants • milk and butter from an animal • yeast is a fungus burger contains: • muscle from an animal cheddar cheese contains: • milk from an animal product • bacteria ------------------------------------------------------------------------------------------------- Page 1 of 3 Part 2 A. Draw and label a representative cell and its organelles from each type of organism that produced your food. Only one plant cell, one animal cell, and one bacterial cell are required. If you have extra time, try drawing one fungal or protist cell (this is optional and extra credit!). Remember: humans are animals, so our generic animal cell is also the type of cell that our food is headed to in our bodies! Example: whole wheat bun: • sugar and wheat are products of plant cells • yeast fungal cells are used to make the bread rise burger: • beef contains animal cells cheddar cheese: • milk is the product of animal cells • bacterial cells are used to ferment the milk into cheese Make sure to include and label (if present): • • • • • • cell wall extracellular matrix plasma membrane nucleus ribosomes rough and smooth • • • • endoplasmic reticulum Golgi body vacuoles lysosomes plastids (See Lab 02: chloroplasts, amyloplasts, • • • • • • • chromoplasts) mitochondria cytoskeleton cilia flagella nucleoid region capsule pili B. Research and photocopy or print out an electron micrograph of a specific type of cell that shows some cellular structures from an organism that your food came from. Example: whole wheat bun -> research a wheat plant cell whole wheat bun -> research a yeast fungal cell burger -> research a muscle cell cheddar cheese -> research lactococci or lactobacilli bacteria ------------------------------------------------------------------------------------------------- Page 2 of 3 Part 3 On the cell drawings from Part 2, label at least one organelle or cellular structure in each cell type where you would find the following molecules. Be sure to include the following terms where appropriate: • • • • • protein cellulose chitin (optional) starch glycogen1 • • • • • phospholipid triglyceride2 cholesterol DNA RNA 1 – for cool picture of where located in a cell see: http://bio1151b.nicerweb.net/Locked/media/ch05/05_06Polysacchar_Glycogen.jpg 2 – for cool picture of where located in a fat cell (whose job is to store triglycerides) see: http://www.sp.uconn.edu/~terry/images/other/adipocyte.gif ------------------------------------------------------------------------------------------------Part 4 A. Draw a diagram of your ideas on how water, temperature, pH, and digestive enzymes work to break down the biological macromolecules (polymers) from Part 3 into smaller subunits (monomers; see list below). (Remember: polymer + water ---hydrolysis---> monomers). Also include which polymer(s) could not be broken down and are eliminated as waste. Be sure to include the following terms if they apply to your foods: • • • • hydrogen bonds covalent bonds hydrolysis amino acids • • • • monosaccharides nucleotides glycerol fatty acids B. Draw a diagram of your ideas on how these smaller subunits are then reassembled inside of your cells (our generic human animal cell). (Remember: monomers ---dehydration reaction---> polymer + water). Be sure to include the following terms: • • • • • dehydration reaction proteins carbohydrates lipids nucleic acids C. In bullet points include your ideas of why this human cell might need these monomers from our food and what it would do with them. ------------------------------------------------------------------------------------------------Part 5 Assemble together all of your materials and make sure all group members have copies of the information. You will each now use this information to construct individual explanatory models as homework in order to answer the question, “Are we really what we eat?” See the checklist handout to make sure that you include everything that you will need for your model. Page 3 of 3