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up the larger ball first. The larger magnitude, be it weight, height, cost, or temperature, will make the smaller magnitude seem proportionally smaller than it actually is. The opposite is true as well. A smaller magnitude will make the larger magnitude appear larger than it is. In this experiment you will demonstrate this phenomenon in experimental conditions.
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In this investigation, amylase is the enzyme, and starch is the substrate, i.e. the substance it acts upon. In fact this work should add to your knowledge about the process of digestion which occurs in your body. This practical work is designed to give you some experience about: i) how enzymes work, using amylase as an example ii) what a "control" experiment tells you iii) how to carr
Difficulty: High school
Enzymes are very large and complex organic molecules that are synthesized by the cell to perform very specific functions. These biological catalysts are important because they speed up the rate of the reaction they catalyze that would otherwise be too slow to support life. Catalase is an enzyme present in the cells of plants, animals and aerobic (oxygen requiring) bacteria. It promotes the convers
Difficulty: Middle school
Students will work in pairs in the lab to produce a dragon from the random mixing of genetic traits. Each student will be a surrogate dragon parent. They will pick up a complete set of dragon chromosomes. Surrogate dragon parent partners must be of the opposite sex, therefore one parent must pick up the double X chromosomes while the other must pick up the X/Y chromosomes. The homologous chromosom
Difficulty: Elementary school
One of the most dramatic experiments to perform is the demonstration of the blind spot. The blind spot is the area on the retina without receptors that respond to light. Therefore an image that falls on this region will NOT be seen. It is in this region that the optic nerve exits the eye on its way to the brain. To find your blind spot, look at the image below or draw it on a piece of paper:
Difficulty: Elementary school
Students in the primary and intermediate grades will: 1. Recognize that breathing is a necessary, automatic life process; 2. Observe and record data on respiration rate; 3. demonstrate how air enters and leaves the lungs; 4. Observe how respiratory rate changes with different activities; 5. Use counting as a means of gathering data.
Difficulty: Middle school
The more homework students complete, especially from grades six to twelve, the better they do in school, according to recent research. The research also demonstrates that parental attitudes toward homework play an important role in their children's education.
Difficulty: Middle school
to recall the details of the image. Results of the experiment will demonstrate if music actually makes a difference in memory, and if so, whether this differs between genders.
This is an activity which uses frogs or toads to demonstrate scientific method, by measuring the respiration rate, as well as the other external features of the live specimen. The kids enjoy working with the Arizona Toads.
Difficulty: Middle school
The purpose of this lab is to demonstrate visible changes in E. coli bacteria that have been transformed with a gene that codes for a green fluorescent protein, the source of this gene being bioluminescent jellyfish. In real life, the gene provides the jellyfish with a glow-in-the-dark feature in the deep, dark ocean. You will be using a plasmid called pGLO (p = plasmid) because the gene being
Difficulty: High school
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