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  1. ... equioibrate? Ans: Whenever any of the experimental factor is changed, you need to allow time for...why should we place the tube of plants inside a beaker with water? Ans: This ensures the temperature...

    分類:科學及數學 > 生物學 2007年11月19日

  2. If you cut a potato and leave it in air, the cut surface will dry up and form a kind of crust, protecting the tissues inside from further losing water to the surroundings. It will then be difficult for the H2O2 in the solution to access the substrate.

    分類:科學及數學 > 生物學 2010年11月24日

  3. ...: By division in early spring and from seed. Uses: Experiment with dwarf forms in the front of the garden border and in pots, but use the...

    分類:科學及數學 > 生物學 2007年03月28日

  4. ...4). 2. Use a holder to put a piece of (2) into the test tube and soak it with (5). 3. If (2) turns from pink to purple, then glucose is present...

    分類:科學及數學 > 生物學 2012年11月30日

  5. ... about the origin of life a hypothesis as we cannot experiment or prove with supporting. Thus we cannot call studying the origin...

    分類:科學及數學 > 生物學 2007年11月08日

  6. ...in recycling nutrients and providing fertile soils. Experiments with controlled environments have shown that humans...

    分類:科學及數學 > 生物學 2007年02月15日

  7. ...pant use carbon dioxide as raw material to carry our photosynthesis with the present of light. during photosynthesis, oxygen is released...

    分類:科學及數學 > 生物學 2007年01月08日

  8. ... seeds are formed, most plants store a food reserve with the seed, such as starch, proteins, or oils. This food reserve...

    分類:科學及數學 > 生物學 2013年11月21日

  9. There are some proteins in the jelly, they from bonds to build up the structure of the jelly, then the jelly becomes solid. But there is some protease (enzyme) in Fresh kiwi, which breaks drown the protein in the jelly, so the jelly is only half set...

    分類:科學及數學 > 生物學 2007年09月17日

  10. ... the theory of spontaneous generation. The experiment also supported germ theory. Pasteur&... fermenting beverages. With this established, he invented a process in...

    分類:科學及數學 > 生物學 2008年04月08日