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Bozeman Biology Osmosis Coursework

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Bozeman biology osmosis coursework

STANDARD 1. CELL STRUCTURE andORGANIZATION IN LIVING THINGS

A. Distinguish between and give examples of between cells, tissues, organs and organ systems
B.State the three parts to the cell theory.
C. Use cell diagrams to assist in explaining the similarities and differences between organelles found in prokaryotes and eukaryotes, and describe all cell organelle functions

D. Describe three structures that are unique to plant cells, and why plant cells need each of these structures
  • Notes: Review the Powerpoint and take notes: Cell structure and Organization in Living Things (in course docs)
  • Other Resources to help you understand the topics:
    • Read. History of the Cell / Cell Theory PowerPoint
    • Tutorial: Cells Alive: 3d Cell - Plant, animal and bacterial
    • Reading Tutorial: Cell Structure and Function (Biology Place) Click "Next" to move through the concepts on the structure of prokaryotic and eukaryotic cells
    • Tutorial: Learn Genetics Utah - Inside a Cell
    • Animation: Difference between flagella and cilia
    • Animation: How lysosomes work (McGraw Hill)
  • Review and Practice :
    • Practice Quizzes: Prokaryotes
      • Drag and drop basic prokaryotic cell parts
      • Drag and drop prokaryotic cell parts ( Bacterial Cell ) drag and drop
    • Practice Quizzes: Eukaryotes
      • Practice Quiz: Drag and drop basic eukaryotic cell parts practice
      • Practice Quiz: Drag and drop eukaryotic cell parts (Plant Cell )
      • Practice Quiz: Drag and drop eukaryotic cell parts (Animal Cell )
      • Practice Quiz: Plant Cell Parts. uses a numbered diagram to test you on identifying some of the key organelles in plant cells .
      • Practice Quiz: Drag and drop functions for cell organelles (zerobio)
      • Practice Quiz . Animal Cell Parts and Animal Cell Parts and Functions
      • Online Flashcards ( Quizlet) Cell Organelle s
  • Class Resources / Just for Fun:
    • Animation: The inner life of a cell - Awesome! (Harvard) See an animation of how the organelles actually work!
    • Video Clips: Protein Synthesis
    • Song: The Cell Song
    • Game. The Incredible Megacell (Nobel Prize)The quicker you select and shoot the correct organelle, the more points you will score. If you're really quick you could end up on the all-time high score list! For instructions on how to play the game, click on the HELP button found at the bottom of the game window

STANDARD 2.CELL MEMBRANE


A. Describe the structure and function of each part of the cell membrane and label each part in a diagram: phospholipid, carbohydrate chain, integral proteins, peripheral proteins, cholesterol

B. Explain why the cell membrane can be described as both a fluid mosaic model and a semipermeable structure

  • Notes.Powerpoint Notes: Cell Membrane (in course documents)
  • Other Resources.
    • Book Reading: Modern Biology 4-2 Parts of the Eukaryotic Cell (pages 73-75 only – Cell Membrane Section)
    • Video Clip: Bozeman Biology Cell membranes (YouTube 11:03)
  • Review and Practice :
    • Video Clip. The Plasma Membrane - A View of the cell (14 min) Tutorial/ lecture
    • Animation: Cell membrane - Fluid Mosaic Model Animation
    • Tutorial. Cell Membrane Structure. (The Biology Place)
    • Tutorial: walk through a cell membrane tutorial
    • Video Clip: The Plasma Membrane - A View of the cell
    • Animated Tutorial. Selective Permeability (The Biology Place)
    • Interact. Construction of the Cell Membrane. The student studies the structure of the cell membrane by constructing it using the correct molecules. (WISC-online)
    • Interactive Practice: Drag and drop - Selective Permeability (Pearson) Which molecules will cross the membrane by passive diffusion
    • Quiz Yourself. Membranes. tests you on the key terms and principles related to membranes.
  • Class Resources / Just for Fun :
    • Song: Cell Membrane Song
    • Game!Cell Defense: The Plasma Membrane Game ( Doctor Earnest Lee Vial has come up with a vile weapon that he is using to destroy cell membranes (aka plasma membranes)! As you know, ALL living cells depend on the plasma membrane to regulate what comes into and out of the cell. Without the plasma membrane, the cells of living things everywhere will be unable to maintain homeostasis and will DIE! All life everywhere depends on YOU and what you find out about plasma membrane structure and function! Good luck!)
    • Cell Membranes Problem Set (Biology Project). Read and select Problem 1 at the bottom. Work through problems. VERY comprehensive. Will teach you if you get it wrong. ONLY do #'s 1,2,4,6,7,14 and 16.

STANDARD 3.PASSIVE TRANSPORT

A. Given a scenario, predict the occurrence of diffusion and compare observations to predictions in a lab setting

B. Apply the terms hypertonic, hypotonic and isotonic to examples of osmosis in a cell

C. Using labeled diagrams, predict the direction of osmosis and the resulting effects on animal and plant cells.

D. Explain the concept of passive transport and distinguish between the three types

STANDARD 4.ACTIVE TRANSPORT

A. Define active transport and relate it to the processes of endocytosis and exocytosis

B. Compare facilitated diffusion to protein pumps

C. Distinguish between passive and active transport, both in words and using diagrams.

  • Notes.Powerpoint Notes: Active Transport (in course documents)
  • Other Resources.
    • Video Clip. Active Transport (YouTube Beverly Biology 11:38)
    • Video Clip. ‪Difference between types of transport Diffusion , Facilitated Diffusion & Active Transport: Movement across the Cell Membrane‬ (YouTube watch until 3:30)
    • Animated Tutorial: Sodium-Potassium Pump (More detailed - McGraw-Hill)
    • Animations. Endocytosis and Exocytosis (CuNY.edu)
    • Video Clip: Bozeman Biology Transport Across cell membranes - Instruction for all parts of unit - Includes passive and active transport, and osmosis (YouTube 13:57)
    • Book Reading: Modern Biology Section 5-2 Active Transport
  • Review and Practice :
    • Animated Tutorial. Passive and Active Transport (The Biology Place)
    • Practice Quiz: on Cell membranes and Transport (The Biology Place)
    • Matching Quiz: Membrane Transport (Pearson) Match the description of the membrane transport process with the type of movement
  • Class Resources / Just for Fun :
A. Demonstrate correct usage of compound light microscopes (on scanning, low and high power), as well as correct usage of stereomicroscopes
  • Notes: Review the Powerpoint and take notes: Microscopes (in course docs)
  • Other Resources to help you understand the topics:
    • Tutorial: the light microscope (CSUN.edu)
    • Tutorial: Depth of Focus How to focus (Molecular Expressions) (Java)
    • Video Clip: Using The Compound Light Microscope
    • Drag and Drop: Parts of the light microscope Practice
    • The concept of Magnification (Molecular Expressions)
  • Class Resources / Just for Fun:
    • Virtual Scanning Electron Microscope. see a virtual interactive demonstration of how a scanning electron microscope works! Choose from samples such as a cockroach, a gecko foot, jellyfish, ragweed pollen, a grasshopper, a fruit fly, or others!

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Osmosis Biology coursework - GCSE Science - Marked by

Osmosis Biology coursework

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GCSE Biology Osmosis Coursework Potato and Osmosis Investigation Introduction into Osmosis Osmosis is a unique type of diffusion. Diffusion is basically the movement of particles from areas where there are a groups of them to places where there are fewer a bit like someone releasing methane, you do not smell it straight it but it gradually spreads out then it is equally balanced having reached equilibrium Nice air Bad smell Osmosis is defined as the movement of water molecules from a region that they are highly concentrated to a region in which they are less concentrated. This movement only takes place through a partially permeable membrane such as a cell wall, which lets small molecules go through like water but does not let bigger molecules to pass through like sugar. The water molecules pass both ways. In this diagram, the water will more likely go right. Diagram of Osmosis Plant cells always have a strong cell wall surrounding them. When they obtain water by osmosis they commence to swell but the cell wall prevents them from bursting. If it were an animal cell, it would rupture because it does not have a cell wall. Plant cells become turgid when they are in dilute solutions. Turgid means inflated and firm. If these potato strips were placed in a solution with a low water concentration, then the opposite would happen. Water would shift out of the cell into the solution. If the situation was fatal, the cell membrane would leave the cell wall and the cell is now to be known as plasmolysed or flaccid. . read more.

To make sure that this experiment is safe I will take certain measures including: * wear goggles for the protection of my eyes * cover up any cuts * no running around the lab which may cause fatal accidents * if a spill has occurred make sure it has been cleaned straight away * be careful with the knife * also be careful with the borer * every stool, bags and coats be underneath the table * not to leave any experiments unattended Preliminary Method I will gather all equipment that will be needed for the experiment. Solutions - these are the solutions, which will be in each of the beakers. 1. 1 molar sugar solution with 200 ml of water 2. 0.75 molar sugar solution with 200 ml of water 3. 0.50 molar sugar solution with 200 ml of water 4. 0.25 molar sugar solution with 200 ml of water 5. Only pure water which consists of 200 ml of water Systematic Method 1. Using a knife, I will peel five potatoes 2. Using the borer, I will bore holes in the potato. 3. Using the scale, I will weigh the tubes and record it. 4. I will put all of the tubes in with the solutions at the same time. The time limit will be ten minutes. 5. In the end, I will take all the tubes out from beakers, remove excess water, and weigh. Results of Preliminary Method Solution Number Mass Before Grams Mass After Grams Percentage Change % 1 15.801 15.611 1.3 2 15.838 15.343 - 3.1 3 . read more.

This would allow more osmosis to happen and I would be able to find the isotonic points of the experiments more accurately as the one I had made is very rough. For weighing of each potato piece, I could have measured it on a more accurate scale like 0.000 instead of 0.00 But I also may decide to change the plant tissue to a cucumber or carrot. One thing I found hard during the investigation was the cutting of the potato pieces, if one piece was different from the others then osmosis taking place in each piece may have been at different rates, as the surface area would have been affected. So to improve accuracy, I may try to use some sort of machine like a potato peeler and cutter from a fast food store. This would mean every potato piece would be the same mass making it a fairer test. Throughout the experiment, I used a measuring cylinder, which is not always precisely accurate. I could have used a burette or a titration. One other thing was that when I removed excess water from the potatoes after the experimentation, I might have removed more excess water than others. So in the future, I may find another answer to drying like a hair blow dryer. Overall, even though I may say so myself, the investigation of my main method was very successful. Also, I was pleased with the comparison between my prediction and main method. I had a number of results from which I was able to make very useful graphs. GCSE Biology Osmosis Coursework By Lekhraj Newoor. 1 . read more.

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A Biology Coursework: Osmosis - Coventry Mall

A Biology Coursework: Osmosis

If you were requested to produce a list of the foremost challenging assignments, a Biology coursework on osmosis would stand within the beginning of the list. This particular article is made for those people fortunate college students who’ve not faced this job but (it will be basically inevitable) and for individuals who really have to craft this semester their Biology coursework on some tricky method like osmosis.

Definition of osmosis

The first point you’ll need to do as part of your Biology coursework on osmosis is always to present your deep idea of the nature of this approach. Osmosis is regarded as a chaotic movement of h2o through the area accompanied by a somewhat lower solute focus with the region by having a larger degree of solute focus. Biology courseworks on osmosis must be influenced by the theory of physics, biology and chemistry, consequently it’s essential to have some expertise in every of those courses.

Content of Biology courseworks on osmosis:

  1. Introduction of your respective Biology coursework on osmosis: you will be intended to identify a hypothesis and justify the importance of learning this unique facet. It should be stated the practice of osmosis releases a good total of vitality. That could be why this method is below investigation of plenty of scientific centers.
  2. Research part of your respective Biology coursework on osmosis: you’ll have to perform homework and investigate this process within the laboratory of your respective highschool or college. It is suggested to check with to your teacher’s aid and advice on how to entire this challenge within the only way.
  3. Summary of your respective Biology coursework on osmosis: presentation of your findings, investigation of information, and interpretation of your research’s results are integral parts of this portion.

The society is filled with multiple complex organic and chemical procedures. Biology courseworks on these subject matter as osmosis is only considered one of the problems you may will have to produce about. So, be ready for surprises from the Biology class trainer.

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Investigating osmosis - coursework for biology includes prediction evaluation and results

Investigating osmosis - coursework for biology includes prediction evaluation and results

Osmosis is defined as ¡§the movement of water molecules across a partially permeable membrane from a region of high water concentration to a region of low water concentration¡¨.

In a high concentration of water the amount of solute (e.g. sugar) is low. This could be called a weak or dilute solution. In a low concentration of water the amount of solute (e.g. sucrose) is high. This could be called a strong or concentrated solution. When two such solutions are divided by a semi-permeable membrane the water will move from the area of high concentration to the area of low concentration, until both sides are equal (have reached equilibrium).

Knowing that osmosis will occur across a semi-permeable membrane whenever there is a difference between the water concentrations on the two sides of the membrane, and knowing that when this happens to cells they will either become turgid if water flows into them, or plasmolysed if water flows out of them, and thus change their volume, we want to test the hypothesis that:

If the concentration of a solution into which a cylinder of potato is placed is greater than a certain level the cylinder will contract, and if the concentration is less than that level it will expand.

This can be seen in living cells. The cell membrane in cells is semi-permeable and the vacuole contains a sugar/salt solution. So when a cell is placed in distilled water (high water concentration) water will move across the semi-permeable membrane into the cell (lower water concentration) by osmosis, making the cell swell. This cell is now referred to as turgid. If done with potato cells the cells would increase in length volume and mass because of the extra water. If these potato cells were placed in a solution with a low water.

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