Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Topic Two: Synthetic Biology 101. Activity: What is Biotechnology? Who, What, When, Where, Why, and How. This lesson was taken and adapted from the Children’s Museum of Indianapolis website. http://www.childrensmuseum.org/themuseum/biotech/biotech.htm Objectives Students will be able to read about biotechnology and deliver a presentation discussing the who, the what, the where, the why, and the how of this field. Key Terms Biotechnology, genetic engineering, yeast, bacteria, enzyme Time 1-3 days Materials and equipment Computer with internet access, poster board, markers, and tape. Procedure 1. Have students read about biotechnology from the following website: http://www.childrensmuseum.org/themuseum/biotech /biotech.htm 2. Ask students to take notes on the reading. A note taking system that would be great for this activity would be Cornell notes or split page notes where one side is the main idea or concept in the reading and the other side is a question that is developed for the main topic. You can do an internet search and learn about the Cornell note taking system and apply it to your class as a literacy strategy. 3. Next have students conduct the biotechnology webquest: http://www.childrensmuseum.org/themuseum/biotech /webquest/index.htm This one day webquest will help students explore biotechnology and its impact on our future from a bug's point of view! All the information on what the students need is in the webquest. 4. Once students are done with their notes and their web 16 quest put students into pairs. Have them come up with a poster that explains who, what, when, where, why, and how as it pertains to biotechnology. Make sure students are as detailed as possible by using the information presented in the reading. Wrap-up/ 1. Go over the information as a whole class. Discussion 2. Make a class poster using all the information gathered from all the pairs to have a complete description of who, what, when, where, why, and how. 3. Have the class make a list of questions that describe ideas or concept they or a student in this class might not understand. 4. Compile a vocabulary work list from the reading and have students find definitions. Follow-up Activities and Assessment. Brain storm with your students how they can come up with a creative presentation like a skit, an interview, or news cast presenting the information they learned. Assessment: Have student make a brochure that can be given out to their parents or other students presenting the information they learned. Bing in different example of brochures for students to use as a model. These can include pictures, visuals, and text that can be generated by computer or by hand. 17 Topic Two: Synthetic Biology 101. Activity: What is Synthetic Biology? Who, What, When, Where, Why, and How. The reading used in this lesson was taken, changed, and adapted to a 7th grade reading level. The information was taken from the following two websites:1. http://scitation.aip.org/IET-STB, 2. http://www.wisegeek.com/what-is-syntheticbiology.htm Objectives Students will be able to read about synthetic biology and deliver a presentation discussing the who, the what, the where, and the why of this newly emerging field. Key Terms Synthetic biology Time 1-2 days Materials and equipment Poster board, markers, and tape. Procedure 1. Have students read the synthetic biology reading underlined any words they do not understand. 2. Ask students to take notes on the reading. A note taking system that would be great for this activity would be Cornell notes or split page notes where one side is the main idea or concept in the reading and the other side is a question that is developed for the main topic. You can do an internet search and learn about the Cornell note taking system and apply it to your class as a literacy strategy. 3. Once students are done with their notes put students into pairs. Have them come up with a poster that explains who, what, when, where, why, and how as it pertains to synthetic biology. Make sure students are as detailed as possible by using the information presented in the reading. Wrapup/Discussion 1. Go over the information as a whole class. 2. Make a class poster using all the information gathered from all the pairs to have a complete 18 description of who, what, when, where, why, and how. 3. Have the class make a list of questions that describe ideas or concept they or a student in this class might not understand. 4. Compile a vocabulary work list from the reading and have students find definitions. Follow-up Activities and Assessment Brain storm with your students how they can come up with a creative presentation like a skit, an interview, or news cast presenting the information they learned. Assessment: Have student make a brochure that can be given out to their parents or other students presenting the information they learned. Bing in different example of brochures for students to use as a model. These can include pictures, visuals, and text that can be generated by computer or by hand. 19 Topic Two: Synthetic Biology 101: Student Handout. Activity: What is Synthetic Biology? Who, What, When, Where, and Why. Synthetic biology is form of biological study that involves creating an overall understanding of a concept by combining several areas of research. The term synthetic biology has long been used to describe an approach to biology that attempts to integrate (or "synthesize") different areas of research in order to create more understanding of life. More recently the term has been used in a different way, signaling a new area of research that combines science and engineering in order to design and build ("synthesize") novel biological functions and systems. Synthetic biology has come to represent a form of science that combines science with engineering. In this way, new biological systems and functions can be designed and built. Synthetic biology refers to both: o the design and fabrication(making) of biological components and systems that do not already exist in the natural world o the re-design and fabrication of existing biological systems. The term synthetic biology was first used in 1978, after Daniel Nathans, Werber Arber, and Hamilton O. Smith won the Nobel Prize in Physiology or Medicine. The prize was awarded after the Nathans, Arber, and Smith discovered restriction enzymes and determined how to apply them to problems found in molecular genetics. This allowed scientists to reconstruct recombinant deoxyribonucleic acid (DNA) molecules, as well as to analyze individual genes. This example of synthetic biology made it possible for scientists to describe and analyze the way that genes are arranged arrangements. This also allowed scientists to learn how to arrange these genes by hand. Synthetic biology is commonly used in the study of genetics. With synthetic biology, researchers can create a DNA model and place it inside living cells in order to observe the outcome. This helps researchers test their theories and predict genetic outcomes. Systems biology studies complex biological systems as small parts of an integrated whole by using tools of modeling, simulation, and comparison to experiment. The focus is usually on natural systems with some kind of influence on medicine. However, synthetic biology studies how to build artificial biological systems using many of the same tools and experimental techniques used in systems biology. This is done to build and create biological machines for engineering uses. So this work is an engineering application of biological science, not just an attempt to do more science. The focus is often on ways of taking parts of natural 20 biological systems, characterizing and simplifying them, and using them as a component of a highly unnatural, engineered, biological system. Since biological systems are actually physical systems comprised of chemicals, synthetic biology has led to the field of synthetic chemistry. Now synthetic biology and synthetic chemistry can go hand-in-hand because natural chemicals are used to design and to create new chemicals. So the main goal of synthetic biology is to design and build biological systems that can be engineered to process information. Another goal is to as to change chemicals, create materials, provide food, produce energy, maintain and improve human health, and maintain and improve the environment. This can all be done by manipulating the communication that happens inside the cell of organisms. Synthetic biology does, however, have its challenges. Many are concerned about the potential misuse of synthetic biology by terrorist countries. In past human history the same metals created to build sewing needles and plows, for example, were later used to created spears and swords. Nuclear physics created radiation treatments for cancer, but also resulted in nuclear weapons. People that oppose synthetic biology fear that, although it may be able to find a cure for malaria, the same field can also be used to create a biological weapon for which there is no cure. Biologists are interested in synthetic biology because it provides a great perspective from which to consider, analyze, and ultimately understand the living world. Being able to design and build a system is also one very practical measure of understanding. Physicists, chemists and others are interested in synthetic biology as an approach with which to probe the behavior of molecules and their activity inside living cells. Engineers are interested in synthetic biology because the living world provides a seemingly rich yet largely unexplored medium for controlling and processing information, materials, and energy. Learning how to effectively harness the power of the living world will be a major engineering undertaking. Fast and cheap DNA sequencing and synthesis would allow for rapid design, fabrication, and testing of systems. Synthetic Biology is a new interdisciplinary endeavor which involves the recruitment of engineering principles to biology. Simple biological elements can be adopted as reusable, components, which are well characterized and can be used for the construction of more complex devices and systems.. New students and workers are coming into the field from very diverse areas, and need to come to grips with the nitty-gritty of unfamiliar biological systems, engineering tools and computer sciences. There is a demand for specialized coverage of this new field, including educational and review materials. Synthetic Biology will aim to support this growing new community. 21 Topic Two: Synthetic Biology 101 Activity: Synthetic Biology 101 Trading Cards Adapted by a lesson A Lesson Plan from The Department of Education of The National D-Day Museum. http://www.ddaymuseum.org/pdf/edu_lp_tradingcards.pdf Objectives Student will research important concepts related to synthetic biology and create a trading card using a drawing computer program. Key Terms DNA, RNA, Nucleus, Cell Cycle, Transcription, Translation, Proteins, Ribosome, Enzymes, mRNA, tRNA, Genes , Gel Electrophoresis, PCR, Restriction Enzymes, Ligation, Transformation, Cloning, Plasmids, Micropipette, Plates, ligation, yeast, bacteria, Synthetic biology Time 1-2 days Materials and equipment Computer and internet access, card stock, tape, scissors, post-its, and glue. Procedure 1. Explain to your students that they will be researching their notebooks, textbooks and the internet to research an aspect of synthetic biology. You may want to bring in actual baseball or football trading cards and discuss the features of the trading card, such as the photo, title, facts, border, color, etc. to give the students a better understanding of the project. 2. Model a brief lesson to the class illustrating how to create a trading card in a draw program. (Tips: use the rectangle tool to draw the border; use the line tool to dissect the page in half; create text boxes for all texts.) 3. There are 25 total concepts that are listed. Allow students to work in pairs and assign them 15-20 concepts to do research on. 22 4. Download the rubric and the sample trading cards from the following website: http://www.nationalww2museum.org/pdf/edu_lp_tradingcards .pdf Change format to fit your needs. Distribute the rubric. Discuss the criteria: an imported or scanned graphic, title, important facts or information, grammar, punctuation, borders, text boxes and returned rubric. 5. Students will research their topic using the internet virtual interactive, their textbooks, and notebooks to create a trading card using a draw program. Please refer to theme one: DNA Process and Techniques excel spreadsheet for a complete list of websites that students can utilize. 6. Students will print out their trading cards and display them in the classroom. The trading cards can also be printed on card stock heavier stock paper and folded and glued shut to resemble more a traditional trading card. Wrap-up/ Discussion 1. When done have students post 5 of their favorite trading cards around the classroom. 2. Give students a small stack of post its. a. Conduct a silent gallery walk of all the trading cards and ask students to write one positive feedback about a trading card on a post-it. Also ask students to write down one improvement about the trading card on a post it. Have students put post-its around the trading cards. b. At the end of the silent gallery tour as the pair of students that worked on the trading cards together to go and review the post-it feed back. c. Discuss as a class the feed back they noticed. d. Also discuss with the class how the trading card lesson helped them to understand the concept better and why. 23 Follow-up Activities and Assessment Students can interview a partner, take a digital photo and create a trading card for him/her. Students can work in pairs and research a topic of interest and create a new trading card series. Assessment: Have the whole class generate a list of test questions spanning from fill in the blank, multiple choice, short answer, and essay questions. Make a class generated test on the content found on the trading cards. Students will take the test they generated as a class and study for it using their trading cards. 24 Topic Two: Synthetic Biology 101. Activity: Characteristics of Living Things and Model Organisms Objectives Students will be able to understand to: To recognize and describe the characteristics of living organisms. To research model organisms to find out why each organism is a good choice for a particular field of study. Key Terms Model organisms, genes, variations, offspring, genome, organisms, characteristics, metabolism, homeostasis, organs, and organ systems. Time 2-3 days Materials and equipment Computers and internet access to the following website: Procedure http://www.exploratorium.edu/imaging_station/activities/cla ssroom/classroom.php 1. This activity utilizes two lessons from the Exploratorium website which will be useful for review and background information before students move into deeper study of synthetic biology. Both lessons are web based with procedures, materials, preparation, going further activities, alternative approaches, and student pages. These activities can be done as a whole class or as individual lessons. 2. The first lesson is called Characteristics of Living Things and can be found using the following link: http://www.exploratorium.edu/imaging_station/activities/cla ssroom/characteristics/ca_characteristics.php 25 Here students will learn to recognize and describe the characteristics of living organisms. 3. The second lesson is called Model Organisms and can be found at the following link: http://www.exploratorium.edu/imaging_station/activities/cla ssroom/model_organisms/ca_model_organisms.php Here students will learn to research model organisms to find out why each organism is a good choice for a particular field of study. 4. Once you have gone through both of these lessons you will be able to refer to the concepts learned as you move through a deeper study of synthetic biology in the lessons ahead. Wrapup/Discussion Put students into small groups and have them make a list of big picture ideas and concepts that these two lessons were trying to convey. Make a class list and discuss what students learned from these lessons. Make sure to post this list on a big piece of poster board so that you can refer to it during the following lessons in the ETP that go further in the study of synthetic biology. Follow-up Activities and Assessment: 1. Make sure students complete the “going further” part of the both lessons. Assessment: 1. Have students put together a power point presentation the most important concepts learned 2. Students can create an iMovie to tell a story explaining the main ideas of the lesson using the images found on the website 26 Topic Two: Synthetic Biology 101. Activity: Introduction to GFP: A Green light for Biology: Making the invisible visible. This lesson was adapted from the Secrets of the Sequence, “A Green Light for Biology,” developed by the Virginia commonwealth university teaching materials. http://www.pubinfo.vcu.edu/secretsofthesequence/lessons/sots_lesson_124_2.pdf Objectives Key Terms Students will be able to understand how the discovery known as Green Fluorescent Protein has revolutionized molecular biology by making Protein molecules found inside the body go from invisible to visible. students will see how following the hand with a visible label greatly improves their perception. GFP: Green Fluorescent Protein, Bioflorescence, bioluminescent, GFP Technology. Time 1 day Materials and equipment Internet Access, projector, 10 glow sticks Procedure Background: In this video segment students see how a simple discovery led to the application of a powerful tool that has revolutionized the field of cellular biology – Green Fluorescent Protein (GFP). This particular protein has the unique property of bioflorescence. In bioflorescence, available light is absorbed and converted into light of another wavelength, producing a different colored light. In the case of GFP, photons of light in the blue wavelength are converted into photons in the green wavelength. By attaching the gene for GFP to other genes that code for proteins, scientists are able to view cellular proteins in real time under a microscope. This technique uses recombinant technology to “attach” the gene for GFP onto another gene that scientists wish to study. Whenever the gene is expressed, GFP is also expressed and bound to the protein of interest. Exposing cells that carry these proteins to blue light results in a glowing green color. Scientists can then trace the pathways a particular 27 protein takes inside a cell, or observe where the protein stays inside of a cell. This segment also explains the difference between bioluminescence and biofluorescence. The segment does not review how DNA can be spliced and recombined, so a brief discussion should precede this segment. The segment illustrates many applications of GFP technology among the examples provided. Students will see glowing jellyfish, glowing cells and the special microscopy needed to visualize these structures. One stunning part of the segment shows the export of proteins from a Golgi apparatus using time-lapse photography. Only the protein of interest is illuminated, but students can clearly see how the Golgi exports the proteins to other parts of the cell using vesicles. 1. Preview the video and make note of the locations at which you will later pause the video for discussion. Find the video at http://www.pubinfo.vcu.edu/secretsofthesequence/. Choose the video Secrets of the Sequence,” Show 124, Episode 2 “A Green Light for Biology” 2. Before viewing ask the following questions: 1) Ask: “Can you name an organism that gives off light?” Fireflies 2) Explain: Special enzymatic reactions (luciferase) create light in fireflies. Certain chemicals glow because they emit photons of light when excited. 3) Ask: “Can you think of some uses for chemicals that can emit light?” Paint used in watch dials, light sticks 4) Explain: Luminescence is the ability of something to produce its own light, Fluorescence, on the other hand, is the ability of something to emit light when exposed to other light. Some minerals, for example, fluoresce when exposed to UV light. 5) Briefly review the concept of proteins and protein expression. Students will need a basic understanding of protein expression to benefit most from this segment. Ask: “Can we see proteins?” No 6) Optional: Show students pictures of stained cells. Ask: “What makes it possible for us to see cell structures more clearly?” Stains and dyes used to highlight structures 28 Wrapup/Discussion Follow-up Activities and assessment 1. During viewing ask the following questions: 1. Pause the video after the computer explanation that describes the difference between bioluminescence and biofluorescence (2.54 minutes into the video). With the students’ help, create a chart on the board summarizing differences between bioluminescence and biofluorescence: Example: Biofluorescence Use incoming light to emit fluorescent light Use GFP (converts blue incoming light to green fluorescent light) Bioluminescence Use lucerferase + O2 → luminescent light Produces own fluorescent light 2. RESUME the video and play to the end. 1. How did scientists use GFP to change the way they view cells? • Why would a scientist want to use GFP instead of stains and dyes that fluoresce? 2) What are some useful applications of GFP in cellular biology? 3) Have students list other examples of genes that have been transferred to other organisms. (This could be an assignment where students research the topic.) 1. Conduct the following demonstration to illustrate how motions can be clarified using fluorescence. Materials: • green glow sticks (at least 2 per class) • a very darkened room Procedure: a) Divide students into two groups. Each group should choose a short word that they will later ‘write in the air’ in the dark. The word is unimportant but you could limit them to a biology topic area. b) Turn the lights off and blacken windows if possible. Immediately have one person in a group “write” the word in the air using his or her hand. The other group should try to 29 guess the letters and the word that is being spelled. The darker the room, the better the effect. c) Then have the same group member hold a glowing glow stick in his/her hand and spell the same word. Hopefully, students will see how following the hand with a visible label greatly improves their perception. 2.Have students use the following web interactive to learn about what makes fireflies glow: http://learn.genetics.utah.edu/units/basics/firefly/ Assessment: Students can write a report about fireflies and/or other bioluminescent and biofluorescencent organisms and describe the process utilizing what they learned in this lesson as part of their report. 30 31