Classroom PowerPoint and Resources
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Molecular Biology
When we think of something as alive, we often think of the physical organisms or structures we can see with our naked eye or even a microscope. Yet there is a vast array of molecules that are crucial to life, the building blocks of life. These molecules provide energy, help reactions to occur, and even provide one of the most necessary components that nearly all forms of life need. In this unit we will examine these molecules including proteins, carbohydrates and lipids.
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Click links for more information on the following topics:
Condensation & Hydrolysis:
Carbohydrates:Proteins:
Lipids:
Condensation & Hydrolysis:
Carbohydrates:Proteins:
Lipids:
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You will be creating an edible model of the cell membrane. Through this model you should be able to identify properties that make it work. Use the following document for all the requirements of your model.
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Questions for Cell Membrane Demonstration
You will be asked one of these questions. Each person will be asked a question and the exam grade will be based on how well you can explain the concept. You will have to use your model to demonstrate each. You do not know which question you will be asked, so you need to be pre-pair for each question. Downloadable Version
cell_membrane_questions.docx
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Labs on Diffusion and Osmosis
You will be doing a series of labs dealing with diffusion and osmosis and the movement of materials along a membrane. Some of the things you need to be aware of: How do cell membranes help regulate internal cellular makeup? For these labs, the purposes are to observe, measure, and identify factors thatinfluence diffusion and osmosis in model cells.
Concepts:
Diffusion Osmosis
Cell Size Surface area/Volume ratio
Concentration gradient Semipermeable membrane
Hypotonic, hypertonic, isotonic solutions
Background Information:
Explain how cells need materials to be transported in and out of the cell.
Why is the movement of materials in a cell important?
How do materials move in and out a the cell membrane -be specific
Explain diffusion, what is is, how does it work, how do the molecules move, how does it work in the cell membrane? Include figures
Explain Osmosis, what is it, how does it work, explain the different solution concentrations:Hypotonic, Hypertonic, Isotonic, how do these solution concentrations move along a gradient, how do they move in the cell membrane
Include figures.
Experiments:
Explain the different experiments you have done. Explain the materials you have used and what you did to conduct your experiment. Explain your results, your results should also include a data table and a graph if applicable. Explain your results and what you concluded from your results. How are they tied to the information you have above.
Thing to be aware of:
Make sure you refer back to the lab information I have provided for you, It will not be posted on the website, since they are copywritten. I have also included videos on some of the concepts you need to know. Do not procrastinate. Keep up with the paper, and the lab write ups so that that you understand the concepts and are successful in your exams. This will count for several lab grades, and exam grades. It will be turned in as a group, however, everyone in the group needs to know the material to be successful in the exams.
Writing a Scientific Report
Writing a Scientific Report is very important. It explains the research you were doing, what you were trying to discover and what did you discover about your project. Of course science reports are very specific. I have left you a link to the University of North Carolina at Chapel Hill College of Arts and Sciences Writing Center that goes over the proper way of writing a report. It is extensive and you have done some preliminary writing. I want you to use this link to help you write and arrange your paper. I am expecting data and analysis of your data. The report is a group grade, however I am expecting an individual assignment. I will explain this more later.
Individual Assignment
Your individual assignment will be to write an Abstract of your Science Report. An abstract is a self-contained, short, and powerful statement that describes a larger work. The type of Abstract you will be writing is an Informative Abstract. I have again left you a link, it is to the same Writing Center as the one above, but goes over how to write an abstract. Of course if you want more information, do some independent research on abstracts.
The abstract you will be writing again is your individual assignment. Each of you wrote your report, but you will be writing an abstract of your report as an individual. You may help each other out, but this is your work and I expect it to be yours and not your groups work. This will be due the same time as your individual paper.
WRITING CENTER-ABSTRACTWatch the following video on water, then do the following worksheet. This is due on Thursday
Water Power Point-Extra SupportDownloadable PPT
ch._3_water_9e.ppt
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Water PotentialWater Potential is something that you need to know and it deals with osmosis. The following video talks about water potential. Do the video review sheet for the video then do the fun with water worksheet. The review worksheet can be done by Friday 12/4/15. You should be able to start on the Fun With Water, however that one will be due on Monday.Water Potential Power PointDownload the following power point and use it for extra support on Water Potential