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Diffusion Teacher Resources
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Students distinguish between active and passive transport. Students identify key words associated with active and passive transport. They draw and explain the structure f the cellular membrane. They are able to define phospholipid bilayer, hydrophilic, and hydrophobic. Students discuss diffusion which is an example of passive transport.
Educate and entertain at the same time! When presenting upcoming biologists with homeostasis in animals, use this colorful and information-packed presentation. Animals make humorous comments on the information provided. It details the processes of water balance and nitrogen waste removal with diagrams, photos, and comprehensive notes.
Explore structures within the realm of gas exchange in terrestrial and aquatic life. The excellent, labelled diagrams and clear descriptions help your students view the different structures and adaptations that have developed. The 29 slides explain diffusion of gases, and students should be able to take useful notes to summarize these facts and processes even further.
The many mechanisms of maintaining internal conditions of an organism are detailed here, with clear examples of how separate evolutionary paths have led to different conclusions. The slides are concise and attractively designed with information about diffusion, osmosis, waste diposal, and hormone feedback loops. Some slides have questions regarding the mechanisms of regulation which stimulate questioning and discussion from the students.
This presentation begins with the many problems multicellular organisms which rely on diffusion encounter. There are many diagrams of mammalian organ structures, and they are labelled with their relevant functions. This an excellent PowerPoint to show a class that has a basic understanding of system organization in humans.
Students discover advances in biomedical technology such as transdermal delivery and other non-invasive procedures. In lab activities, they examine how medication is given and how molecules travel, observe electrophoresis, and conduct several experiments in groups. In another activity, students inspect how drugs are delivered through a stent and how catheters and angioplasty balloons are inserted.
In this homeostasis and plasma membrane worksheet, 9th graders identify and solve 11 different vocabulary terms and definitions. They review the definitions of the words listed and then use the clues to complete the puzzle shown. Finally, they use the letters in the dark boxes that describe what is being studied.
In this homeostasis and plasma membrane worksheet, students complete 4 different questions related to the diagram shown at the top of the sheet. They draw an arrow across the plasma membrane in the diagram to show which way water molecules move during osmosis. Then, students identify which substance moves in osmosis.
Does salt water affect a plant cell differently than fresh water? High schoolers will work together to answer this question through a series of observations of macroscopic and microscopic observations. The investigations are straightforward and easy to follow, and they also lend themselves well to a full lab write up.
The need for a respiratory system in humans versus being reliant on gas exchange structures is demonstrated. There are many details about the advantages and disadvantages of each mechanism. Students are able to learn about the hemoglobin (haemoglobin) and oxygen dissociation curve.
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 discover osmosis. Six activities in all, this collection is a must for your biology class! Lesson plans are thoroughly written and the activities are both engaging and informational. Thank the National Science Teachers Association for this gem of a resource!
Twelfth graders investigate specialized structures in both plants and animals. They relate structure to function, as they determine why the specialization is necessary and useful to the living organisms involved. They use microscopes to look at cells and they investigate the differences between different types of cells.