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  1. N

    How does three chambers of heart help the amphibians?

    it seems that these kinds of animals can prevent blood going throught the lung (pulmonary vein,artey)Can anyone clarify it plz?
  2. N

    Thick wall or thin wall ?

    Cells with thick wall can support the whole organisms. Then what is the function of thin wall?
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    Is yeast an enzyme?

    yeast is regarded as Fungi
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    What is the by-product when skeletal cells respire anaerobically ?

    thx Asking this question because i heard my friend saying that skeletal muscle cells give alcohol when respire anaerobically.
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    What is the by-product when skeletal cells respire anaerobically ?

    What is the by-product when skeletal cells respire anaerobically ?
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    Why mineral salts do not considered as energy flow?

    Why mineral salts are not considered as energy ? Why mineral salts are not considered as energy ?
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    Algae and pH value

    what is the relationship between Algae and pH value? why there are more algae ,pH value rises?
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    What is function of protease?

    Protease and Enzymes what is function of protease? IF it digests protein, then will it digest enzyme as enzymes are made of protein?
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    Sperm under the microscope.

    oh..that's great. yours even better than my school's
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    How to avoid cancer?

    Eating plenty of vitamin C is harmful to our health per day. You just need to take enough vitamin C every day as it is soluble in water and cannot be stored in our body
  11. N

    Sperm under the microscope.

    how is the quality of your microscope??If yours have 400X, i think you can see the sperms clearly .. Actually i have seen once when i visit an university. They move very quicky
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    How to avoid cancer?

    1)i think we should eat more vegetables but less fried food . Fried food contain some substances which can increase the chance of getting cancer. 3) air , i think we cannot have a great change of it unless you move to another places.As i know ,Asbestos is surely carcinogenic. And one thing...
  13. N

    Osmosis is the passage of water from a region of high water

    Osmosis is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration. .My question is why high water potential flows water to low water potential. What makes this occurs ? Also, does enzyme still works after being...
  14. N

    Why do ppl suffered from famine always has a beer belly?

    why do ppl suffered from famine always has a beer belly?
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    Root VS mesophyll cells

    how about mitochondria?
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    DNA and heredity

    when before stone age,the human beings are like as a gorilla. i mean their appearance , using four legs to move ....etc... but now we have got changes . we have a big brain, use two legs to walk . so is it relating the changes of DNA,or others?
  17. N

    DNA and heredity

    i thought i got some refused thing.can DNA change?if they cannot change, why we dont like as a cave dweller or like a monkey?i mean the body .
  18. N

    Can I make my hair grow faster?

    if you want your hair grow faster , you must stimulate it.You can effleurage it.
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    Root VS mesophyll cells

    Which organelles do mesophyll cells have more than root cells of a plant? Do Onions have chloroplasts?
  20. N

    What is the function of ribosome?

    what is the function of ribosome,?
  21. N

    Cell division

    could anybody be kind to explain what is cell division to me please? i only know is that its chromotins duplicated.
  22. N

    Can any life survive without water?

    i think so . I think the other planet's species may survive without water. Because the other planet has no water so there will create some species do not need water.
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    Will the plant's respiration rate increasing while the plant is taking photosynthesis

    will the plant's respiration rate increasing while the plant is taking photosynthesis?
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