Search results for: “system”
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Investigation: Rat Dissection
Provides instructions for dissecting a preserved rat. Students start with the external anatomy, then locate muscles, bones, and then the major organs.
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Investigation: Observing Diffusion & Semi-Permeable Membranes
Units on the cell will also include lessons about how the cell transports materials across the membrane. For beginning biology students who don’t have a strong foundation in physical science, the ideas of entropy, solutions, and concentrations can be overwhelming. Diffusion is easy to explain with a perfume bottle or food coloring. …
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Toxicology Resources for the Biology Class
Resources for investigating how poison affects animal physiology. Students can read the “Poisoner’s Handbook” and perform experiments on worms.
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Case Study – Are Nanobacteria Alive?
In this case study, students review the evidence of scientists on both sides of the controversy questioning whether nanobacteria are living organisms.
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Investigation: Osmosis and Water Potential
Students models osmosis using dialysis tubes that contain different concentrations of sucrose. The tubes will gain water dependent upon the molarity of solution they are placed in. You can make sucrose solutions with table sugar, and instructions are included in the teacher’s guide to the lab. The second part of the investigation determine the…
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Investigation: Photosynthesis and Leaf Discs
As photosynthesis takes place, oxygen is released and causes the leaf to float. The number of floating disk is a measure of the rate of photosynthesis.
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Investigation: Enzymes Activity with Catalase
Have you ever noticed that when you pour hydrogen peroxide on a wound, it bubbles? The reason is that bacteria and your own tissue contains an enzyme that breaks down the peroxide. Peroxide splits into a molecule of water and a molecule of oxygen, which causes the bubbles. In a series of tests, students observe…
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External Anatomy of the Grasshopper
Dissection guide for the grasshopper. Focuses on the external anatomy: legs, mouth parts, segments, includes a labeling and coloring.
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What Can Bird Beaks Tell You About Their Lifestyle?
Worksheet showing bird images where students determine their lifestyle based on the shape of their beaks and feet.
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Investigation: What Are the Different Types of Cells?
Students look at cells from different domains and kingdoms; compare the size of cells and how their structure and shape differ depending on their function.
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Case Study – Are Invading Bullfrogs Harmful?
Students follow a story about an ecologist and a student who are studying the population size of bullfrogs in California. These amphibians are considered an invasive species in that area and have been causing the decline of native species. Students learn concepts related to community interactions and learn one species can cause the decline…
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Investigation: Temperature and Fish Respiration Rate
Students investigate what happens to the respiration rate of a fish as the temperature is decreased. Analyze data and create a graph.
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Case Study – A Tiny Heart (old version)
Students examine the symptoms of a newborn baby who has a problem with his heart and suggest treatment options.
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AP Biology – Investigation on Genetics with Plants
A modified AP Lab where students learn to grow plants from a seed, cross pollinate plants and conduct an inquiry investigation about plant genetics.
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Color a Plant Cell and Identify Functions
Students learn the structures found in a plant cell by coloring them according to directions.