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Investigating Factors That Affect Cell Membrane Permeability
Cell membranes and the factors that affect its integrity are studied, with Beet tissue used as the model. A poster to display findings of the permeability of the membranes would clarify understanding and also allow a layer of language...
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Cells and the Cell Membrane
Students investigate the properties of cell membranes by isolating the membrane surrounding chicken eggs. They set up an experiment by placing eggs in a vinegar solution for three days. A powerpoint lecture emphasizes the structure of...
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Cell Size and Shape; Diffusion and Osmosis Processes
Use salmon eggs as a cell model for demonstrating the movement of water over concentration gradients. Junior scientists examine the same process microscopically with an onion cell. They use a thistle tube and a semipermeable membrane to...
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Osmosis and the Cell Membrane-part 2
Students participate in a review of diffusion and the basic properties of the cell membrane before exploring the process of osmosis in a lab activity. Using shell-less eggs that have soaked in various solutions, students make...
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Dissecting Frog Embryos: Cell Membranes and Mitosis
Students use high powered dissection microscopes to dissect and examine frog embryos as well as see balls of cells that were produced by rapid division. The concept of mitosis links to the lesson.
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How do Hypotonic, Hypertonic, and Isotonic Solutions Affect the Water Movement of a Cell?
After removing the shell from a raw egg, cell biologists soak the egg in either a hypotonic, hypertonic, or isotonic corn syrup solution. They calculate the percent change in mass and compare it to the strength of the solution in a...
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Semipermeable Membranes and Bioaccumulation
Beginning biologists place a drop of food coloring into water of differing temperatures to observe the effect on the diffusion rate. They remove the shells from raw eggs and then experiment with osmosis over the remaining membranes....
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Cell Division: Frog Egg Division Observation and Modeling
Learners create and test a hypothesis about cell division. After observation of Frog Egg cell division, students write obervations and refine process and hypothesis. The use of scientific method, group work and inquiry are fostered by...
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Cell (Biology)
Young scholars conduct a series of activities to explore the nature of cells. For this biology lesson, students observe plant and animal cells under the microscope and compare them. They differentiate osmosis and diffusion.
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WET Science Lesson #5: Pass the Salt Please! (How Road Salt Affects Wetlands)
As an anticipatory set, biologists listen to the story of Ruth Patrick, a scientist who used algae to detect water quality. They observe a demonstration of osmosis and diffusion. In their lab groups, they place Elodea stalks in...
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Cell Size Changes
Students examine the behavior of living cells treated with different types of stimuli. They watch an online movie, examine wet mount slides under a microscope, take an online quiz, and analyze data.
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Diffusion Across a Selectively Permeable Membrane
Learners investigate how water passes through cell membranes. In this biology lesson, students differentiate osmosis and diffusion. They illustrate the movement of water in both processes.
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How Can We Study the Differences in Animal and Plant Cells Using the Compound Microscope?
Young scholars examine their cheek cells with a compound microscope. They identify different parts of the cell. They compare and contrast animal and plant cells with the microscope as well.
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PROTOPLAST PRODUCTION
Pupils are allowed to strip away the cell walls of plants cells (using enzymes) and then observe the resulting spherical protoplasts (plant cells minus the cell wall). They see that plants cells indeed have a plasma membrane in addition...
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Cell Swelling and Shrinking
Students examine the concept of osmosis in relation to dehydration. They identify the function and structure of semi-permable membranes. They predict how certain processes can affect the characteristics of an organism.
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WHAT IS A CELL?
Students explore the function and structures of cells, including plant and animal cells. They explore cell parts including cell wall, ribosomes, chromosomes, nucleoid, plasmids, flagella, pilli, and plasma membrane, cel
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Enhancing Uptake of Glucose in Rabbit Muscle Cells
Students observe diffusion of glucose through a cell membrane and research the function of chromium picolinate in glucose uptake into a cell. They conclude and understand the role of insulin and chromium picolinate in the uptake of...
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A Cell Is Like A City
Students create analogies that help them remember the cell parts as well as their respective functions.
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Study of the Cell
Students draw a diagram to show the fluid mosaic model of a membrane. They explain how hydrophobic and hydrophilic properties help membranes hold their shape. They identify the functions of different cell membrane proteins as well.
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Osmosis and Diffusion: Egg Lab
Students examine why diffusion and osmosis happen in an egg cell. In this diffusion activity students demonstrate a semi permeable membrane.
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Cell physiology and chemistry
Young scholars design an experiment to discriminate between chemical diffusion, osmosis, facilitated diffusion and active transport through a membrane. Be specific about predictions and interpretations!
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Generation of Action Potentials in Nitella Giant Algal Cells
Students observe cytoplasmic streaming in Nitella cells. They examine the conduction of a wave of depolarization across other membranes, such as the axons of neurons. Students predict the effects of sending a small electric current...
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Science Lesson Plans
Students conduct a variety of exploration activities on various science topics. In this science instructional activity outline, students design a cell encapsulation to hold a specific type of medicine. They give examples of physical and...
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A Hands-On Paper Activity Examining The Relationship Between Hierarchical Levels Of Structure And Function
Students investigate how complex functions arise in biological systems through the creation of several paper structures to accomplish various tasks such as remaining suspended in air for the longest time, making the loudest noise and...