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Thread: Metabolism

  1. #1 Metabolism 
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    From what i have read that there are two types of metabolism: anabolism and catabolism. What doubt me is that why anabolism is powered by catabolism. What i thought is that energy is always produced when bonds are made and is used when bonds are broke. should it happens oppositely? And is there any other thypes of metabolism other than those two?

    i feel that this question is a bit stupid but im just curious about it

    thxx


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  3. #2  
    Forum Cosmic Wizard i_feel_tiredsleepy's Avatar
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    The catabolism is coupled with the formation of "high-energy" molecules like NADH or FADH2.

    Catabolism and anabolism are very broad categorizations. Catabolism being the breaking down of a molecule, while anabolism is the building of larger molecules from smaller ones. There are many different catabolic and anabolic pathways, but that is the general divide.


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  4. #3  
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    It is also something of an artificial distinction. While anabolism and catabolism are real, they are not truly distinct. Human metabolism is intensely complex and very interactive. So, a catabolic action may be driving one that is anabolical, and the net result could be either.

    However, the distinction is sometimes useful in trying to understand what is going on.
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  5. #4  
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    thxx..that really helps =)
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  6. #5  
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    Energy is not produced or destroyed, although it can be transformed from one form to another (First Law of Thermodynamics)

    Tridimity
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    Forum Cosmic Wizard i_feel_tiredsleepy's Avatar
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    Quote Originally Posted by tridimity
    Energy is not produced or destroyed, although it can be transformed from one form to another (First Law of Thermodynamics)

    Tridimity
    This has nothing to do with answering the OP's question.
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  8. #7  
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    YES it does -

    "From what i have read that there are two types of metabolism: anabolism and catabolism. What doubt me is that why anabolism is powered by catabolism. What i thought is that energy is always produced when bonds are made and is used when bonds are broke. should it happens oppositely? And is there any other thypes of metabolism other than those two?"

    Granted the question was mostly about anabolism vs. catabolism, however the writer says and i quote, '...energy is always PRODUCED when bonds are made and is USED when bonds are broke(n).'

    I thought it might be important to correct this mistake because I respect the First Law of Thermodynamics.
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  9. #8  
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    Quote Originally Posted by tridimity
    Granted the question was mostly about anabolism vs. catabolism, however the writer says and i quote, '...energy is always PRODUCED when bonds are made and is USED when bonds are broke(n).'

    I thought it might be important to correct this mistake because I respect the First Law of Thermodynamics.
    Then might it not have been more useful to suggest using released, or transferred rather than produced, and absorbed rather than used?
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  10. #9  
    Moderator Moderator TheBiologista's Avatar
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    Quote Originally Posted by tridimity
    YES it does -

    "From what i have read that there are two types of metabolism: anabolism and catabolism. What doubt me is that why anabolism is powered by catabolism. What i thought is that energy is always produced when bonds are made and is used when bonds are broke. should it happens oppositely? And is there any other thypes of metabolism other than those two?"

    Granted the question was mostly about anabolism vs. catabolism, however the writer says and i quote, '...energy is always PRODUCED when bonds are made and is USED when bonds are broke(n).'

    I thought it might be important to correct this mistake because I respect the First Law of Thermodynamics.
    It might be argued that the OP should have used "released" instead of "produced" and "stored" instead of "used", but it was clearly not the OPs intention to suggest that energy is destroyed or created in any absolute sense. It doesn't really help us to divert the topic away from the question the poster needed answered.
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  11. #10 Re: Metabolism 
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    Quote Originally Posted by Amadeus
    From what i have read that there are two types of metabolism: anabolism and catabolism. What doubt me is that why anabolism is powered by catabolism. What i thought is that energy is always produced when bonds are made and is used when bonds are broke. should it happens oppositely? And is there any other thypes of metabolism other than those two?

    i feel that this question is a bit stupid but im just curious about it

    thxx
    There are too many varying chemical reactions usually taking place in complex cellular processes to say "this here is catabolism, this here is anabolism". Take cellular respiration, for instance. Even during the catabolism of glucose during glycolysis, ATP is being produced and other new molecules are being formed. When hydrogen ions are released from NADH, the eventually enter ATP synthase and turn an axle to produce ATP.
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