Why does the rate of photosynthesis increase, peak, and then decrease as temperature increase?
961871
first more heat allows it to process faster, but eventually it will begin to get too hot and scorch the plant
1116859
only if they are growing (the balance is called net photosynthesis rate). but when the conditions are not favourable for photosynthesis, they may get into "red numbers", negative net photosynthesis rate, like when they are wilting and/or it is too hot, they respire more than the photosynthesize. generally in temperate region water supply is the limiting factor, in sea it is the light that rapidly gets low when we get deeper.
905156
Advantage and disadvantage:\n\nPlants with high photosynthesis rates grows faster but has a shorter term of life.
702792
Reduction in light and in some cases lower temps for some trees kill the chlorophyll.  This lets the other pigments(reds and yellows) show through that have always been there but were hidden by the abundant chlorophyll.
853286
According to the lab experiment we performed, carbon dioxide had to be introduced in a solution to make it more acidic and then the plant was submerged and placed under a light source to act as photosynthesis process. This process takes quite a while, however cellular respiration was already taking place. So I'm thinking the answer is no.
1040258
7 - B.  The typical diamater of a cell is 10 micrometers.\n\n8 - A.  An enzyme is a catalyst, which means it lowers the activation energy of the reaction, causing it to proceed faster.  The enzyme may react briefly with the reactants, but is not consumed in the reaction (i.e. there's the same amount of enzyme at the end as there was before the reaction started).\n\n9 - C. Plants use energy from the sun and carbon from carbon dioxide to make glucose.  They also need water to supply electrons in an early stage of photosynthesis.\n\n10 - B.  I'm not sure "by-product" is quite the right word as it is the desired product, but ATP is the only one of those four compounds during any stage of celluar respiration.  Starch can be broken down into glucose, and glucose is the sugar that is burned during cellular respiration.  Chlorophyll is found in plants and is involved in photosynthesis, but has no role in cellular respiration.
948326
The process by which plants convert water and carbon dioxide into carbohydrates, using sunlight as the source of energy and the aid of chlorophyll.\n\nmethods of measuring rate of photosynthesis:\n\n1) Measure the uptake of CO2\n\n2) Measure the production of O2\n\n3) Measure the production of carbohydrates\n\n4) Measure increase in dry mass \n\nThe only one which won't work is to measure the uptake of water!\n\nUptake of CO2 can be measured with the means of an IRGA (Infra-Red Gas Analyser) which can compare the CO2 concentration in gas passing into a chamber surrounding a leaf/plant and the CO2 leaving the chamber\n\nCO2 uptake can also be measured by following the uptake of carbon dioxide labelled with 14C\n\nOxygen can be measured by a) counting bubbles evolved from pond weed b) with the Audus apparatus\n\nThe rate of decolourisation of DCPIP in the Hill Reaction is a measure of the rate of the light-requiring stages of photosynthesis\n\nThe production of carbohydrates can be measured crudely by monitoring the dry mass of a disc cut out from one side of leaf (with a cork borer) and compared with the dry mass of a similar disc cut from the other side some weeks later.\n\nDry mass is often monitored by the technique of 'serial harvests' where several plants are harvested, dried to constant weight and weighed - this is repeated over the duration of the experiment. \n\nAs the equation for respiration is almost the reverse of the one for photosynthesis, you will need to think whether these methods measure photosynthesis .\n\nI belive this information will be usefull for you.\nAll the best
261200
No photosynthesis. There is a time of course where plants do not photosynthesize. It is normal. But if you are talking prolonged states of no photosynthesis in all plant biomass, the amount of carbondioxide would go up and 1/since there will be a deficieny in oxygen life on earth would be at risk 2/since CO2 is a green house gas, global warming will be accelerated
94348
A sharp increase in temperature.
941373
Within limits,as temperature increases,so does the amount of O2 released from the hemoglobin.Heat is a byproduct of the metabolic reations of all cells and the heat released by contracting muscle fibers tends to raise body temperature.Metabolically active cells require more O2 and liberate more acids and heat.The acids and heat, in turn, promote release of O2 from oxyhemoglobin(oxy binded with hemoglobin in blood).\n\nSo, increased in temperature caused the rate of respiration to increase too.Because O2 tends to be released from the hemoglobin compared to when the weather is cold.This explain why during fever,a person will breath faster than normal person.\nIn contrast,during hypothermia(lowered body temperature) cellular metabolism slows and the need for O2 is reduced,and more O2 remains bound to hemoglobin.\n\nPlease check my grammar too.Im sux with my grammar coz English is my 3rd language.So, please check it.Hope this helps ya!
854687
Temperature is a measure of the average kinetic energy in a substance. A catalyst reduces the activation energy required to go through a reaction. Energy is still usually required though. At lower temperature, there is a lower amount of energy so the process is slowed.
17237
Global temperature has gone through many changes, some of which were natural cycles grounded in astronomy (solar activities, changes in earth's orbit), others of which have been natural catastrophes like meteoric strikes or huge volcanic eruptions. \n\nThe rapid consumption of fossile fuels and the production of other greenhouse gases doubtlessly has influenced the average temperature and increased the rise of it. Whether it is the sole determining factor cannot be said, because all observations can only be made overlaid with all the natural factors.\n\nFor this reason, experts still debate...
758329
the equations of cellular respiration and photosynthesis are related because they are the converses of each other. cellular respiration is oxygen and glucose equaling carbon dioxide, water and energy. photosynthesis is when energy, water, and carbon dioxide equal oxygen and glucose. photosynthesis needs cellular respiration and cellular respiration needs photosynthesis.
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B.\n\nCellular respiration uses Oxygen and releases CO2, and at Nighttime, Photosynthesis cannot occur(since there is a lack of light) and therefore cannot convert CO2 to O2, hence lowering the concentration
814292
When the temperature goes up, so does the speed of the electrons.  Faster electrons, faster bonding, faster absorbency.
743400
Enzymes accelerate the rate of the reaction. When the enzymes are heated, they reach their optimum point. They are activated and thus produce a faster rate of reaction.
798825
They don't ALL release oxygen 24hrs a day guys! Oxygen is released during the process of photosynthesis. Photosynthesis requires sunlight. Is it bright and sunny in the middle of the night?! \nThat was a response to the previous answerers... I am sorry, I don't know the answer to your question! Perhaps it could relate to the photosynthetic pathway of the plant, eg C4 or CAM rather than just C3? That's just a random guess though. Good luck...