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营养缺陷型菌株的筛选和鉴定

营养缺陷型菌株的筛选和鉴定 mutugenesis and isolation of auxotroph 细菌革兰氏染色法 gram stain 酵母菌的形态结构观察 yeast morphology 培养基的配制和灭菌 types of mddia and sterlization 菌种保藏 preservation of cultures 细胞计数法 conting of cell 凝集反应 agglutination reactions 相差显微镜 phase contrast microscope 细胞融合 cell fusion 质粒DNA的提取 isolation of plasmid DNA 植物DNA的提取 isolation of plant DNA 多肽的末端分析 analysis of terminal of polypeptide PCR扩增DNA PCR amplify DNA fragment SDS-聚丙烯凝胶电泳 SDS-polyacrylamide gel electrophoresis 蛋白质的性质 properties of protein 植物组织培养 plant tissue culture BL-410生物机能实验系统简介 the introduction of BL-410 biofunctional experiment system 青蛙坐骨神经-腓肠肌标本的制备 preparation methods for nerve-muscle specimen of frog 人ABO血型的鉴定 Identification of humankind ABO blood group 蟾蜍心室肌的期前收缩与代偿性间歇 compensatory pause and ventricular extrasystole of ventricular muscle for toad 果蝇的两对因子的自由组合 pair factors for free combination of Drosophila 植物姊妹染色单体及染色体的区分 sister chromatid of plant and differentiate of chromosome β-半乳糖苷酶基因(lac-Z)的定点突变 site-directed mutagenesis of β-galactosidase gene(lac-Z) β-半乳糖苷酶的固定化及应用 application and immobilization of β-galactosidase 大肠杆菌感受态细胞的制备及转化 the preparation and transformation of competent cells from Escherichia coli 质粒DNA的提取及酶切 extraction of plasmid DNA and its detection 植物基因组DAN的提取 extraction of plant genome DNA 小鼠巨噬细胞吞噬实验的观察 experimental observation of macrophage cell 分小鼠腹腔巨噬细胞的吞噬功能 phagocytosis of mice peritoneal macrophage cell 动物骨髓细胞染色体标本的制备 preparation method of chromosomes for animal marrow cells 细菌的形态观察 bacteria morphology 植物叶绿体色素含量的测定 determination of chloroplast pigment in plant 根的形态结构 morphology of root 茎的形态结构 morphology of stem 植物的各种组织 tissus of plants 氨基酸的分离鉴定-纸层析法 the isolation and identification of amino acid- paper chromatography 蛋白质的颜色反应 coloration reaction of proteins 白菜的组织培养 tissue culture of cabbage High School Biology Experiment Ideas By Jennifer Eblin, eHow Contributor updated: April 28, 2010

1. One idea involves testing the effects of different substances on plants. High school level biology covers all aspects of biology, including animals, plant life and humans. That should mean it's easy to come up with a science fair project or a classroom research project, but the amount of topics sometimes makes it even harder. When you first start researching, you'll find thousands of ideas and it's difficult to decide which one is best for your situation. Provided that you know what you want to do and what your teacher or judges are looking for, it's easy to come up with a great biology experiment.

Effects on Plants 2. Test the effects of different substances on plants. Place plants from the same source in pots of the same size, then use different types of materials. You can test different types of potting soil against regular dirt or use the same type of potting soil and test other substances. Water the plants with different types of bottled water and tap water from your home and other homes or add a small amount of vinegar and other liquids to see how the plants react to those substances. Observe the effects of the different substances on the plants and measure how quickly each plant grows in comparison to the others.

Water Bottles 3. Test the amount of germs and toxins found when you refill a water bottle. Start by taking a sample swab from the outside lip of the bottle and looking at the water under a microscope for any bacteria or impurities. Then drink from the bottle as you otherwise would and test the bottle each time you refill it with extra water. Student athletes can even use the same plastic water bottles they carry with them to practice every day. Each time, you'll want to swab the inside lip of the bottle and look at the swab under a microscope. Identify any bacteria or toxins by looking at the examples found in your textbook.

Public Germs 4. You might be surprised when you check different public areas for germs. Take swabs at public bathrooms, in your classroom, on the door handles at stores and even books at the public library. Look at the swabs under a microscope and see what types of germs you find. Then offer a comparison of the germs and explain your findings. Discuss which germs are harmful and what levels of germs you found.

Hair 5. Do a biology experiment focusing on how the hair reacts to different types of products. Test shampoos, conditioners, hair gels, hair sprays and other products. Look for residue left behind by the product, but take a few sample hairs before you begin. Check the consistency and health of the sample hairs under a microscope and compare those results against hairs after using the products. Observe any changes you notice in the look or feel of your hair, as well. Then look for signs that the hair has become more damaged or healthier since you used the product. You'll need to narrow it down to just a few products, but if you have more time, use one product for several days before switching to another

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