FREEBIE! Catalase - An Enzyme Common to Both Plants and Animals Great Lab Activity! Concepts covered: 1. Enzymes speed up the rate of biological chemical reactions. 2. 3. 4. 5. Introduction: Catalase is an enzyme that is commonly found in plant and animal tissues. Within cells, hydrogen peroxide is thought to be formed continually as an end product of biochemical reactions such as cellular respiration. Manganese dioxide is a catalyst. Materials needed: Fresh plant and animal tissue Test tubes and racks Boiled animal tissues Manganese dioxide 3% hydrogen peroxide solution Sand Mortar and pestle Catalase is an enzyme that is found in all eukaryotic cells. What reaction will students see as catalase breaks down the hydrogen peroxide? As you can imagine, students absolutely love this lab!! Also related:
This Is Your Brain The Stone is a forum for contemporary philosophers and other thinkers on issues both timely and timeless. Despite rumors to the contrary, there are many ways in which the human brain isn’t all that fancy. Let’s compare it to the nervous system of a fruit fly. Both are made up of cells, of course, with neurons playing particularly important roles. Now one might expect that a neuron from a human will differ dramatically from one from a fly. Maybe the human’s will have especially ornate ways of communicating with other neurons, making use of unique “neurotransmitter” messengers. We study hard to get admitted to a top college to get a good job to get into the nursing home of our choice. But no. Erin Schell Neuroscientists understand the structural bases of some of these qualities. There’s another domain of unique human skills, and neuroscientists are learning a bit about how the brain pulls it off. Consider the following from J. Anxiety is secretive. Or: What is Gendler going on about?
Cell Models For life all cells have basic needs. Cells have diverged in their structure and function to accommodate these survival requirements. Here are some KEY TERMS to help you think, explore and search for similarities and significant differences that have become the characteristics of eukaryote (animal, plant) and prokaryotic (bacteria) cells. Examples might be searching: eukaryote prokaryote reproduction or animal plant cell energy. Reproduction / cell division Energy trapping, storage and consumption Form / shape / structure Cell specialization Compartmentalization of cell functions Communication within and beyond the cell Cell / organism survival Parmesan, goat cheese and spinach flans I French Cooking for Dummies – Recipes, Parisian restaurants reviews… Here are some cute savory goat cheese and spinach flans really easy to make. They’re a perfect side dish for fish or meat and you can find thousands of variations. But you could use this savory flan recipe for starters or a light lunch as well, adding a salad on the side. This flan recipe features Parmesan, goat cheese and spinach. And if you feel adventurous and try different cheese and vegetables variations, don’t hesitate to share them with us in the comment section! Preparation time: 20 minutes – Cooking time: 20 minutes Ingredients (for 2 to 3 servings) 1 lb (450 g) of fresh spinach leaves2 1/2 oz (75 g) of goat cheese1 1/2 oz (45 g) of grated Parmesan2 eggs2 tablespoons of heavy cream2 teaspoons of butterSalt and pepper Instructions 1/ Wash and dry spinach leaves thoroughly. 2/ Melt 1 teaspoon of butter in a frying pan over medium-low heat. 3/ Preheat oven to 350° F (180° C/ Th 6). 4/ Dice goat cheese. 5/ Break eggs in a large bowl and whisk them with a fork.
Lab: Gas Exchange in Respiration Gas Exchange in Respiration: Qualitative Observation of Carbon Dioxide Release It is the time of year for teaching photosynthesis and respiration to my biology students. I think that all biology teachers will agree that these are difficult concepts to teach to our students. Other than genetics, I think that the topics of photosynthesis and respiration may be my favorite topics to teach. I enjoy the chemistry aspects, and I especially enjoy sitting back and marveling at how beautiful these two processes are. Which do you teach first? It is so important to make sure that the students first have a firm grasp on the "big picture". Unfortunately, I have found it very difficult to find good labs to reinforce the concepts of respiration. If you have great lab ideas for respiration, I would love to hear them!
Deals Of The Week Looks For Quarters Under The Couch Cushions In today’s cash-constrained environment, drug markers are doing everything possible to limit the burn, while finding new sources of innovation. Hence this week’s news that Pfizer is teaming up with UCSF in an $85 million research collaboration (see below), as well as the respective emphasis at Roche and Novartis on “operational excellence” and “focused diversification”. This desire to wrest as much value out of available resources is also the driving force behind various big pharmas’ decisions to outlicense deprioritized assets, whether they are single-asset focused arrangements or spin-outs of actual whole departments. In the good old days, pharma didn’t have to think too hard about such measures. With abundant free cash flow and blockbuster projects these activities were a distraction deemed not worth the time and effort required.But like graduate students searching for additional cash underneath their sofa cushions, big pharmas can no longer afford not to monetize, monetize, monetize.
LAB: USING CABBAGE JUICE TO OBSERVE CO2 PRODUCTION IN CELL RESPIRATION Make your science class more fun and interesting by incorporating lab activities into your daily and weekly lesson plans. My students particularly love this lab because it uses red cabbage juice as an acid/base indicator to detect the carbon dioxide that is released during cellular respiration. Carbon dioxide is released during cellular respiration and is given off as a waste product. Purpose: 1. Materials List: Cabbage juice indicator, Test tubes, Drinking straws, Cotton balls, Graduated cylinder, Germinated peas, Dry peas, Rubber stoppers, Test tube rack, Dilute acid, Carbonated beverage Note: This product is also contained in a complete bundled unit plan and can be viewed here: Cellular Respiration Complete Bundled Unit Plan This lab is perfect for any biology or life science class that is studying cellular respiration. This lab is easy to set up and easy to take down, and does not require any fancy pieces of lab equipment. Lab: Measuring the Energy in Foods Test: Cellular Respiration
Doctor Suing Patients Over Negative Yelp Reviews Dr. Jay Pensler, a plastic surgeon in Chicago, isn’t happy with services such as Yelp. The doctor, unhappy about negative reviews his former patients posted on Yelp and Citysearch, is suing at least three of them for defamation. In court papers, Pensler, who calls himself a “well respected plastic surgeon,” says the women have “embarked on a malicious campaign to undermine and destroy” his personal reputation. On the review sites, many women claiming to be former patients offered descriptive and disturbing accounts of their encounters with the Chicago surgeon. On Yelp, another woman said her breasts looked like something out of a horror film. One of the women’s lawyers feels that the suits will be dismissed, but not until after each woman racks up thousands’ of dollars in legal fees. What do you think?
Foldables in Science | Science for All This is not a science specific resource, however, as an elementary teacher of science and as a professional development provider I have used Foldables to help learners better understand science concepts. If you are new to Foldables, they are essentially folded paper used as a graphic organizer. There are many flavors of Foldables: Cause & Effect, Venn Diagrams, mini-books, and more. If you found this post by searching for science & foldables, I would ask that you check out some of my other posts and add this blog to your science education bookmarks. Some of my favorite Foldables resource sites are the following: Applications for Science Teachers: Foldables help students build understanding through the use of visual and kinesthetic interactions. Like this: Like Loading...
MacBook Air outperforms Windows netbooks and ultraportables | Business Center | From the Lab | Macworld We already know the 2010 MacBook Air models significantly improve on the previous generation in overall performance, but how do they stack up against Windows 7 laptops of similar size? Judged solely on performance, they dominate. With Windows 7 running on Apple’s featherweight machines, our test results indicate that the new Airs ran faster than all but one recent netbook or ultraportable from Windows PC vendors. The PCWorld Labs team used Apple's Boot Camp application to load Windows 7 on new 11-inch and 13-inch MacBook Air models. Then we benchmarked them using our WorldBench 6 test suite and using the games Call of Duty 4 and DiRT 2. The result: For their size, the Airs are hard to beat on raw performance. The 11-Inch MacBook Air: Floats Like a Netbook, Stings Like an Ultraportable First we tested a high-end 11-inch MacBook Air packing a 1.4GHz Core 2 Duo processor, 2GB of RAM, 128GB of flash storage and an Nvidia GeForce 320M integrated graphics chipset.
Anatomia Vegetal Visualising the Cell Nucleus Leaf growth Cell growth Cell organelles and cytoplasm visualisation Cell membrane and cell wall growth Dicotyledon* stem cross-section Woody cells of conifer Monocotyledon* stem cross-section These fabulous botanical microanatomy plates constitute the total of illustrations present in 'Anatomia Vegetal' by Frederik Elfving (1929) and published by FE Wachsmuth (Leipzig) which is online at La Biblioteca Virtual de Patrimonio Bibliográfico from the Spanish Ministry of Culture. Elfving (1854-1942) was a professor of botany at the University of Helsinki. [via + via, plus all other points in between across the tumblr-verse]