关于1880年恩格尔曼实验证明光合作用的疑问.实验说,把水绵放在无空气黑暗环境中.= = 光合作用是需要水和二氧化碳做原料的不是么?= = 如果放在无空气环境中,就算水可以来自水绵本身自己

关于1880年恩格尔曼实验证明光合作用的疑问.实验说,把水绵放在无空气黑暗环境中.= = 光合作用是需要水和二氧化碳做原料的不是么?= = 如果放在无空气环境中,就算水可以来自水绵本身自己
关于1880年恩格尔曼实验证明光合作用的疑问.
实验说,把水绵放在无空气黑暗环境中.= = 光合作用是需要水和二氧化碳做原料的不是么?= = 如果放在无空气环境中,就算水可以来自水绵本身自己储存的,可是去哪里找二氧化碳啊?= 没有二氧化碳怎么进行光合作用啊?
应该不是线粒体用氧呼吸产生的二氧化碳,因为用氧呼吸需要氧气,如果没有空气,那么有氧呼吸也是无法进行的.=

关于1880年恩格尔曼实验证明光合作用的疑问.实验说,把水绵放在无空气黑暗环境中.= = 光合作用是需要水和二氧化碳做原料的不是么?= = 如果放在无空气环境中,就算水可以来自水绵本身自己
这个只要对光合作用熟悉一点就知道了,光合作用放出氧气的阶段是在光反应阶段,只需要有水和光能就行,水会光解变成氧气溢出和还原H,至于二氧化碳是在光合作用的暗反应,没有二氧化碳是无法产生有机物的,因此这个光合作用进行的不完全,但仍可产生氧气.

隐之界的答案其实已经说明了，我只是补充一下的。
水绵是水生藻类，生活在水中。恩格尔曼用好氧细菌进行实验，其实所谓的无空气环境是指无氧气的环境就行了。这种实验不可能在真空中进行的。当时的科学条件也不允许。
不过，我们当它是连CO2都没有来看看。
一、光合作用的光反应不需要暗反应支持，光反应在光下把H2O进行光解，就能产生O2。恩格尔曼用一束光线进行实验，为水绵的叶绿体提供了光...

全部展开

隐之界的答案其实已经说明了，我只是补充一下的。
水绵是水生藻类，生活在水中。恩格尔曼用好氧细菌进行实验，其实所谓的无空气环境是指无氧气的环境就行了。这种实验不可能在真空中进行的。当时的科学条件也不允许。
不过，我们当它是连CO2都没有来看看。
一、光合作用的光反应不需要暗反应支持，光反应在光下把H2O进行光解，就能产生O2。恩格尔曼用一束光线进行实验，为水绵的叶绿体提供了光。但光反应也受限于叶绿体基质中的NADP+、ADP、Pi等物质的含量，不能持续进行下去。
二、其实水绵无氧状态也能进行无氧呼吸，产生CO2；
而光合作用产生O2，绝对能满足细胞有氧细胞的需要。细胞通过有氧呼吸产生CO2。
产生的CO2能为光合作用提供原料。
三、由于呼吸作用为光合作用提供CO2，所以光合作用的暗反应得以进行。暗反应得以进行后，光反应也能持续进行了。

收起

Long knee-deep paragraph dust coat is always grace promising, match on black silk plus boots better highlighted perfect legs curve, plus a black bag generous and intellectual. Military green seems win...

全部展开

Long knee-deep paragraph dust coat is always grace promising, match on black silk plus boots better highlighted perfect legs curve, plus a black bag generous and intellectual. Military green seems windbreaker advocate make scene, take tight jeans. Low-key inside collect but do not break vogue again.
Super grows the deep khaki windbreaker to let you gas and dye-in-the-wood, long white scarf also can send out an endless star power, take leisure trousers and rounded toe shoes recreational vogue.
Qiu dong season cuhk street is always filled with black and white ash three colors, bright yellow lets you easily be a focus in the crowd, collocation is tight jeans is sweet and have autumn leisure feelings! Small black lapel dust coat inside take red paragraph small vest, unlcerc black can very good show you the slender leg, match on a pair of shoes with, appear star flavour is dye-in-the-wood. Again will classical tide elements indispensable, thin body pushed waterproof material deserve to ensure all-weather zipper set with the energy conservation, autumn with huckleberry.
Orange windbreaker absolute personality, let you in a khaki with cream-colored crowd. Inside take one printing flowers thin unlined upper garment, feminine flavour is by inside send out, again tie-in hot pants and high-heeled shoes,Discount True Religion Jeans online, agile and fashionable.
Simple paragraph windbreaker open dressed the more show temperament, leopard grain design and color appearing sexy taste, inside take tights, gutty naturally feral, exposing the ankle, design can make you look more slender and sexy is dye-in-the-wood. Red silks and satins windbreaker amorous feelings 10 thousand kinds, smooth silk fabrics to the bright skin lining. Tight dress inside build inside, without excessive deserve to act the role of, the queen gas can show without involuntary discharge of urine.
No matter from version to or design details, this kind of dust coat is a classic. Double platoon to buckle arranged,A-line Wedding Dresses, waist and cuff has unified the tightening design, but from khaki into pink, but also in classical increased in the lively temperament, quite a little woman early maturity,Coach Shoulder bags, the refined taste.
Use white windbreaker collocation leopard grain outfit, most primarily in color or on design form difference, wear an administrative levels feeling. Elegant animal grain looms large,cheap ghd, even windbreaker package, also not be taken away from leopard grain glorious, in dust coat hale temperament show gas.
Brown coat inside build white tee, below is filar socks hot pants and short boots,GHD IV Styler MK4 Purple, dust coat the classical collocation, everyone can follow suit.
Victoria a silver windbreaker alone appeared airport, windbreaker reflective texture build shine effect, case grain bags are systemic spot, and also this year is the tide sheet is tasted. Red windbreaker absolute is qiu dong street a livingcolors, suck as sun-and-rain top-ranking result. Tie-in narrow leg pants and ankle boots, in wet person also wear a van not common elegant feeling.
This type of navy coat inside build case grain shirt relaxed and generous, big turndown collar design, even without charge waist designs, also can wear a not average elegant feeling, with black stockings and British wind high-heeled shoes are tie-in, moist person is the norm.
Yellow dust coat has very eye-catching, waist the bowknot like casual, but shows a grace and amorous feelings, again tie-in printing and long skirt, and dust coat colors bring out the best in each other. Of course, such collocation, it is certain to should have gas talent can perfect control. Dust coat tail has eased processing, let windbreaker won't appear too neutral and YingQi, but increased woman flavour. Looks like dust coat when skirt, again tie-in flower sandals, appear fashion and atmosphere.Topics related articles：


GHD MK4 Pink Winter new sheet is tasted and comfortable warmth

Gucci Handbags By 2010, qiu dong exceeds Hot 5 fur

收起