What does photosynthesis and cellular respiration provide for life?
602648
ATP, which is energy, to be used by cells as needed by breaking chemical bonds. Oxygen is merely a byproduct of photosynthesis' chemical reaction.\n\n-Wied
960590
Photosynthesis (photo=light, synthesis=putting together), generally, is the synthesis of sugar from light, carbon dioxide and water, with oxygen as a waste product. It is arguably the most important biochemical pathway known; nearly all life depends on it. It is an extremely complex process, comprised of many coordinated biochemical reactions. It occurs in higher plants, algae, some bacteria, and some protists, organisms collectively referred to as photoautotrophs.
961932
Probably not. The purpose of photosynthesis is to produce so much food that is not only enough for the plants use, but also there is some left over for other animals too, If plants were to perform photosynthesis at the same rate of cellular respiration, they would only produce enough food that would suffice their own needs.
141038
To put it simply, they're opposites.  Respiration consumes glucose and oxygen and releases energy and carbon dioxide.  Photosynthesis uses sunlight (i.e. energy) and consumes carbon dioxide and produces oxygen and glucose (i.e. stored energy).  In other words, photosynthesis is the process of storing energy and respiration is the process of releasing that energy.
29977
photosyntheses is the way plants make food. the plants make their food by getting sun, water and carbon dioxide and then the plant uses the carbon dioxide (which we breathe out) and lets out oxygen , without any plants we would run out of oxygen.
400379
Not the most specific question, but I'm guessing you're asking about energy storage. Plants use sunlight to make glucose from carbon dioxide and water, thus converting light energy to chemical (food) energy and providing the basis for life on earth as we know it.\n\nThe simple glucose molecules are then strung together to make complex carbohydrates, which serve as energy stores for the plant - and eventually, provides energy to anything that eats the plant.\n\nPlants also obviously store water, vitamins, minerals, etc. as do animals. To get a better answer you'd have to define the question better.\n\nPlants should not be stored in closets. Store where there's light. :)
586250
The simple answer to your question is -- Yes, continuous exposure to an energetic enough light source and adequate supply of water and carbon dioxide WILL prohibit cellular respiration from taking place.  The reason for this is found in the processes that take place during both photosynthesis and cellular respiration.  \n\nFirst, photosynthesis takes place in two phases 1) photophosphorylation (which needs light to take place) and 2) carbon fixation (Calvin cycle – which can occur in the light or dark).  During photophosphorylation, energy in the form of light is captured and stored as NaDPH and/or ATP.  This is also the stage that utilizes the H+ proton from water molecules and releases oxygen as a by-product.  During the Calvin cycle, the carbon in carbon dioxide is “fixed” or assimilated into other products and some ATP is utilized to for the building blocks for the plant, such as glucose.  As I said before, as long at a photosynthetic plant has light, water, and CO2 (and other trace minerals of course), photosynthesis will continue.\n\nSo where does cellular respiration come it, and do plants even do it?  The answer is, yes, they do use cellular respiration and they do it when they need an alternate energy source when light is not present.  Keep in mind that cellular respiration is something akin to the opposite of photosynthesis and its purpose is to supply energy in the form of ATP by breaking down things like glucose.  This provides the needed maintenance energy at the expense of stored energy in the glucose.\n\nSo, why would constant exposure to light keep a plant from respiring?  The answer is – the plant has a constant source of ATP through the photophosphorylation phase of photosynthesis that there is no need to break down its stored “fuel” to provide maintenance energy.  In fact, if enough light is provided, the resulting photosynthesis will provide enough energy to meet maintenance needs and allow generation of building blocks and stored fuel.\n\nAs for the second part of your question, there are many reasons that a plant in natural light for only daylight hours might grow better than one continuously lit artificially.  Most likely though, this has to do with the availability of the necessary “ingredients” for growth mentioned above.  Especially of interest here is the INTENSITY of the light rather than the duration.  However, even if the intensity is high enough, if the other ingredients are lacking relative to the natural environment the plant will still suffer.\n\nHope that clarifies the issue for everyone.
338231
Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which cellular respiration converts into ATP, the "fuel" used by all living things. The conversion of unusable sunlight energy into usable chemical energy, is associated with the actions of the green pigment chlorophyll. Most of the time, the photosynthetic process uses water and releases the oxygen that we absolutely must have to stay alive. Oh yes, we need the food as well!
802594
Animals inhale oxygen and exhale carbon dioxide. Green plants are the only plants that produce oxygen and make food, which is called photosynthesis. Photosynthesis means ''putting together with light.'' This takes place in chloroplasts, which have chlorophyll in them. Chlorophyll absorbs the sunlight. From sunlight, green plants combine carbon dioxide and water to make sugar and oxygen. Green plants use sugar to make starch, fats, and proteins. There are tiny pores called stomota. Oxygen and carbon dioxide enter and leave through the stomata.\nhttp://library.thinkquest.org/3715/photo3.html\n\nImportance of Photosynthesis\n\nAnimals and plants both synthesize fats and proteins from carbohydrates; thus glucose is a basic energy source for all living organisms. The oxygen released (with water vapor, in transpiration) as a photosynthetic byproduct, principally of phytoplankton, provides most of the atmospheric oxygen vital to respiration in plants and animals, and animals in turn produce carbon dioxide necessary to plants. Photosynthesis can therefore be considered the ultimate source of life for nearly all plants and animals by providing the source of energy that drives all their metabolic processes.
890762
chloroplast are only in plant cells, they use photosynthesis to make ATP which is energy for the cell.
906320
The metabolism of most living things involves creating energy or ATP from the catabolism of carbohydrates, primarily monosaccharides.   The primary source of carbohydrates in food comes from the plant kingdom.  Plants use the sun's energy to convert CO2 and H2O into carbohydrates.  So, indirectly the majority of energy produced by all living things originates from the energy of the sun.
272577
Carbon dioxide, because that is the raw material required for photosynthesis
223511
In photosynthesis, plants convert light into chemical energy. This energy is thus used to turn carbon dioxide into carbohydrate releasing oxygen as a byproduct. That is why many plans to fix global warming such as the Kyoto Protocol aim to increase the number of forested areas through so-called carbon sinks.
878227
if you're talking about plant cells, then it is for photosynthesis, the plant's way of making food. This is how it works.\n\nthe plant takes in carbon dioxide, water, and light. These are processed in the cell's chloroplasts and food is produced. The by-products of photosynthesis are sucrose (sugar) and oxygen, which is why we depend on rain forests and plants to give us a continuous supply of oxygen. In goes CO2 and out comes Oxygen!!
800988
Cellular respiration is the exact opposite to photosynthesis:\n\nPhotosynthesis & Cellular Respiration:\n6 CO2 + 6 H2O <-----> C6H12O6 + 6 O2\n\nThe forward direction is photosynthesis and the reserve direction is cellular respiration. Plants use photosynthesis to produce glucose which it uses for energy and stores it. Cellular respiration is used by animals to break down glucose and release energy. It should be noted that photosynthesis requires sunlight and chlorophyll for the above reaction but cellular respiration does not require anything else.
192285
If you want me to use those specific terms it sounds like you're going to just copy what I write for your assignment.  I'd be happy to explain the process to you, by I'm not going to write your homework paper.\n\nThe idea is that plants produce food using energy from the sun, and all other life either directly eats plants or eats things that eat plants.  So all life (except some protists, that, like plants, can make their own food) lives on energy that the plants have harvested from the sun.\n\nI hope you already know what the laws of thermodynamics, photosynthesis, and respiration are.  If not, pay more attention in class or look them up on Wikipedia.  You should be able to figure out how to phrase the explaination in a way that uses those terms on your own.
1012560
Every living thing does cellular respiration, so yeah plants do it too.