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  1. ...will undergo photosynethesis during day (which can produce oxygen and produce). While when there is no light, their respiration consuming oxygen become significant...

    分類:科學及數學 > 生物學 2007年12月14日

  2. use plastic wrap (保鮮紙) to seal off the dough from the air.

    分類:科學及數學 > 生物學 2007年10月28日

  3. ... its tail around plant stems to hold itself in place while eating or when water currents threaten to sweep them away. It can change ...

    分類:科學及數學 > 生物學 2006年11月18日

  4. ... hunters. They need to tell DISTANCE so that when they approach their prey by surprise, they can jump and grab with accuracy. So...

    分類:科學及數學 > 生物學 2007年06月07日

  5. Antibody mediated response : After being stimulated by vlral antigens, B cells multiply and dlfferentiate into plasma cells which produce speclfic circulating antlbody to inactivate the virus. Some...

    分類:科學及數學 > 生物學 2009年03月24日

  6. ... the people still need the same (may be more) amount of oxygen while they're on the mountain. As the oxygen is not... it causes the people get tired easlier when moving at a high mountain since the oxygen transfered to...

    分類:科學及數學 > 生物學 2009年02月23日

  7. ...aorta has a lower carbon dioxide content than that of pulmonary artery. 3. when left ventricle contracts, semi- lunar valves will opens while bicuspid valves would close . 4. it can prevent back flow of blood inside heart.

    分類:科學及數學 > 生物學 2008年05月31日

  8. ... and can be brought thorough out the body. When you need to kill cancer cells or foriegn tissues... cn directly killing infected cells, while antibodies can not.

    分類:科學及數學 > 生物學 2010年03月14日

  9. The steps of how breathing carrying out is written on the table below.The table explains why D is a wrong answer. Memorize this table; you may find it helpful, if you want to do so. descriptions...

    分類:科學及數學 > 生物學 2007年06月17日

  10. ...negligible) ... See more in normal hemes, Fe is in Fe2+ ( while having too much heme in Fe3+ is a disease, since they cannot...

    分類:科學及數學 > 生物學 2010年02月26日