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Author | Topic: Creationist Reasoning for Rubisco's Flaw | |||||||||||||||||||||||
Taz Member (Idle past 3318 days) Posts: 5069 From: Zerus Joined: |
Modulous writes:
That's easy to say in a general sense, but what exactly is causing the change and specifically how is nature changing? A more accurate creationist position would be that all of nature was corrupted after man's original sin. Ever since then things have been falling to pieces and getting worse. In other words, what's motivating the change? Place yourself on the map at http://www.frappr.com/evc The thread about this map can be found here.
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joeferrari15 Inactive Member |
Okay, I'm going to go ahead and assume that AiG is joking.
So the creationist's answer to my question is that rubisco is flawed because of sin?
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Taz Member (Idle past 3318 days) Posts: 5069 From: Zerus Joined: |
Welcome to this forum. I hope you enjoy your stay here.
One quick thing I want to point out is not all reply buttons bear the same weight. Below each post is a reply button. If you press on the reply button underneath my post, I will get a notification saying you've responded to my post. If you press the reply button underneath AiG's post, he will get a noti saying you've responded to his post. However, if you treat all reply buttons the same, it will get really confusing and we wouldn't know who's talking to who. Again, welcome and enjoy. PS look at my signature and click on the first link. Put a pin on the map of where you are and a team of ninjas will be dispatched to brief you on our latest progress in EvC's campaign for world domination. If you do not provide an avatar on the pin, a Mr. X picture will automatically be assigned to you. Place yourself on the map at http://www.frappr.com/evc The thread about this map can be found here.
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Modulous Member Posts: 7801 From: Manchester, UK Joined: |
That's easy to say in a general sense, but what exactly is causing the change Sin, the curse, God.
specifically how is nature changing? We'd need to know what nature was like before sin. We only have a basic description in genesis. One change was in the introduction of death, another was the ground needed to be worked to enable crops to be harvested.
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Modulous Member Posts: 7801 From: Manchester, UK Joined: |
Okay, I'm going to go ahead and assume that AiG is joking.
Never underestimate the power of faith. They are very serious.
So the creationist's answer to my question is that rubisco is flawed because of sin?
More or less, yes. You'll do very well to get any more information out of them than that. Welcome to EvC and welcome a truly unfalsifiable argument.
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nwr Member Posts: 6412 From: Geneva, Illinois Joined: Member Rating: 4.5 |
Okay, I'm going to go ahead and assume that AiG is joking.
Never underestimate the power of faith. They are very serious. Regime change in Washington - midterm elections, Nov 7
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Taz Member (Idle past 3318 days) Posts: 5069 From: Zerus Joined: |
Modulous writes:
I wonder if this can be substantiated through experimentations. I'm thinking something along the line of people committing infidelity and then have children. We could see how degraded the children's genetic makeup compared to the level of infidelity committed by the parents. Sin, the curse, God. Place yourself on the map at http://www.frappr.com/evc The thread about this map can be found here.
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joeferrari15 Inactive Member |
quote: Yes :-D
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AnswersInGenitals Member (Idle past 178 days) Posts: 673 Joined: |
gasby writes: I wonder if this can be substantiated through experimentations. I'm thinking something along the line of people committing infidelity and then have children. We could see how degraded the children's genetic makeup compared to the level of infidelity committed by the parents. For I the LORD your God am a jealous God, visiting the iniquity of the fathers upon the sons to the third and fourth generation (Exodus, chapt. 20 and elsewhere) We see that the iniquity is only inflicted down through the fourth generation, so that the genomic degradation is limited to that generational span and then makes a full recovery. Also, it is only inflicted from father to son, and in particular not from mother to daughter, so that the wife can be a whoring slut without any deleterious effect to be seen in the daughters', grand-daughters', etc., genotype or phenotype. This tells us that the correct place to look for the genome impact of sin is in the Y chromosome, while the mitochondria can be used as an effective control. Who says that the bible is not to be read as a biology textbook?
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Joman Inactive Member |
What happens in hot, dry areas that causes photorespiration is this: Stomata (the openings in plants that allow for CO2 to come into the plant for photosynthesis) are also the main sites of transpiration (the evaporative loss of water from leaves). In order to combat this, plants in hot, dry areas close their stomata, thus drastically reducing the amount of water lost. However, the closing of the stomata not only keeps water vapor from leaving the leaf, but also prevents oxygen (a product of photosynthesis) from leaving as well. As CO2 is used up in photosynthesis and O2 is produced, it follows that there will soon be more O2 in the leaf than CO2. Now, the concentration difference between O2 and CO2 wouldn't matter at all (other than that the plant would run out of CO2 with which to perform photosynthesis) if rubisco didn't have this flaw that I keep talking about that it has a higher affinity for oxygen than CO2. Obviously, since there are more O2 molecules in the leaf than CO2, rubisco will begin to accept O2, thus causing photorespiration. and...
When O2 gets to rubisco first, bad things happen for the plant. Instead of making a 6-carbon sugar as it should, the mistaken rubisco will actually cause the 5-carbon sugar to split into a 3- and 2-carbon sugar. The 2-carbon sugar is useless, and is exported from the chloroplast. This process of mistaken substrate is called photorespiration, and is bad for plants because it depletes its stores of starch. But why does rubisco accept the oxygen, when that leads to disaster for the plant? It appears to the layman that O2 in plants is to some extent unavoidable and therefore a mechanism for it's removal must be available.So, when the usless (to the plant) 2-carbon sugar leaves it takes the useless O2 with it. However, it leaves the valuable 3-carbon sugar behind which is an efficient thing to do. Efficiency is nice but, if plants were geared to maximum efficiency they would risk an avalanche of energy and burn the plant up. In the same way a engine is governed so as to prevent uncontrolled acceleration. That the plant suffers loss of starch is the energy price required for the O2 removal. And, there is always a price to pay isn't there? To show that a design is flawed it is more appropriate to show that there is a better way to accomplish the task. It's like the closing of the stomata. The plant appears to be designed to have the stomata open in good times and closed during the bad for adaptability to changing enviromental circumstances. The consequences of which is problematic. But, it appears that someone analysed the possible circumstances and provided an adequate solution for the problems created by the closing of the stomata.It turns out that it is the affinity to O2 that allows the necessary removal of O2 and subsequently the flexibility of stomata closure. Which is a good thing. I can't reason against the expectation that 100% efficiency in all circumstances wouldn't be a great thing. But, it isn't a realistic expectation. Joman.
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Modulous Member Posts: 7801 From: Manchester, UK Joined: |
oops - my bad. Sorry about that. Thanks nwr. *shakes fist at AnswersInGenitals* damn your ambiguously abbreviated handle.
I suppose the is/are disagreement (AiGenesis being plural and AiGenitals being paradoxicaly single) should have tipped me off.
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joeferrari15 Inactive Member |
quote: The 3-carbon sugar is useless as well.
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mjfloresta Member (Idle past 6020 days) Posts: 277 From: N.Y. Joined: |
A recent paper published in the Proceedings of the National Academy of Sciences has debunked the notion that Rubisco's flaw is the result of evolutionary baggage consequent to a changing environment. Rachmilevitch et al. , in their paper "Nitrate assimilation in plant shoots depends on photorespiration", reveal that photorespiration is a necessary precursor to nitrate assimilation - a process vital to the plants vitality.
As the report indicates, inhibiting photorespiration inhibits nitrate assimilation, which is detrimental to plant vitality. Thus photorespiration is proposed as playing a significant and important role in C3 plants, contrary to current evolutionary thought, which until now conceived of photorespiration playing a detrimental, and in no way beneficial, role.
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Chiroptera Inactive Member |
I thought you left?
Kings were put to death long before 21 January 1793. But regicides of earlier times and their followers were interested in attacking the person, not the principle, of the king. They wanted another king, and that was all. It never occurred to them that the throne could remain empty forever. -- Albert Camus
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joeferrari15 Inactive Member |
Do you, by chance, have a link?
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