What is the difference between photosynthesis and respiration? Download Answers Asked on April 7, 2008 at 8:47 AM by Scott Locklear 18 Answers | Add Yours mvball | College Teacher | (Level 1) Adjunct Educator Posted on September 7, 2008 at 4:13 PM This question deserves several "answers" aimed at different levels. For elementary-school students, it is important to know that photosynthesis is how green plant cells trap sunlight to make sugar, and respiration is how all plant cells (and most other cells) break sugar down to release and use that stored energy. At the high school level, we can add the understanding that all cells break down fuel molecules but only certain cells can use sun energy to create fuel molecules. Also, although the summary equations are sort of "the reverse of each other", the processes are not just "the same but completed in reverse", but involve enzymes and chemical reactions that are specific to the process of either photosynthesis or respiration. In terms of ecological implications of deforestation as they relate to photosynthesis, it is not the lack of oxygen production that concerns us, because marine algae release much more oxygen per year than trees do. Our concern is that a lot of carbon, stored in wood, is released as carbon dioxide when wood is burned, adding to the impact of "greenhouse gases" on global average temperature. clane | High School Teacher | (Level 3) Educator Posted on April 7, 2008 at 10:44 AM The biggest difference between photosynthesis and respiration is that photosynthesis only occurs in plants and some bacteria while respiration occurs in all living organisms. They do share one big similarity and that is that the process of photosynthesis is actually the same process only it is completed in reverse. Photosynthesis is Carbon Dioxide and Water that, through the process, yield Glucose and Oxygen. Respiration is Glucose and Oxygen that, through the process of respiration, yield Carbon Dioxide and Water. The two work well together because living organisms supply plants and some bacteria with the carbon dioxide needed to undergo photosynthesis, and plants and some bacteria give off oxygen which living organisms need to breathe or respire. sid-sarfraz | Student, Graduate | (Level 2) Salutatorian Posted on December 15, 2014 at 3:19 PM Respiration Respiration is the breakdown of glucose to make energy using oxygen. Photosynthesis Photosynthesis is the process through which plants make food for themselves in form of glucose. DIFFERENCE BETWEEN PHOTOSYNTHESIS AND RESPIRATION:- 1. FORMULA Respiration:- Glucose + Oxygen = Carbon dioxide + water Photosynthesis:- Carbon dioxide + water = Glucose + Oxygen 2. TIME OF PROCESS Respiration:- It is a process that is not timely and is done in both day and night Photosynthesis:- Photosynthesis use energy from the sun to make glucose and oxygen in the day. 3. GLUCOSE USAGE Respiration:- Animals and human use glucose and oxygen to carry out respiration Photosynthesis:- Plants produce glucose and oxygen to carry out respiration. 4. CARBON DIOXIDE Respiration:- In respiration, carbon dioxide is exhaled where as oxygen is inhaled by living beings Photosynthesis:- In photosynthesis, carbon dioxide is inhaled during day and oxygen is exhaled where as in night plants inhale oxygen and exhale carbon dioxide. parama9000 | Student, Grade 11 | (Level 1) Valedictorian Posted on July 31, 2014 at 2:11 PM Photosynthesis is where the plant takes in carbon dioxide in the presence of light to produce glucose and water vapour and oxygen to the surroundings. Respiration is where the plant takes in oxygen and releases carbon dioxide to the surroundings. This occurs all the time. cathyluv | Student, Grade 12 | (Level 1) eNoter Posted on July 23, 2014 at 8:06 AM Photosynthesis and respiration occur during different parts of the day. Photosynthesis mainly occurs during daytime as there would be light. The plant takes in the energy from the light and carbon dioxide to produce its 'food' and as a result oxygen is given out as a by product. The oxygen exits through the stomata on the leaves and into the air. Respiration however occurs mainly at night when no light is present. It is very similar to human respiration as it takes in the oxygen in the air to break down its food supply and in turn gives out carbon dioxide. Some people advise not to keep plants in your room if you keep it closed for this very reason! There is a specific time however (about sunset) when the rate of photosynthesis is equal to the rate of transpiration. This is known as compensation point. Basically what happens is that all the oxygen being created in photosynthesis is being used for respiration and all the carbon dioxide produced in respiration is being used up for photosynthesis. Therefore there would be no net product being produced. DABOMBئ(POSTED BY FOSFILM) In photosynthesis, carbon dioxide and water yield glucose and oxygen. In respiration, process glucose and oxygen yield carbon dioxide and water. Photosynthesis takes place in the chloroplast while respiration takes place in the mitochondria. The Equation Photosynthesis : 6CO2 + 12H2O + light --> C6H12O6 + 6O2 + 6H20 Respiration : 6O2 + C6H12O6 --> 6CO2 +6H2O + ATP (energy) zumba96 | Student, Grade 11 | (Level 3) Valedictorian Posted on April 30, 2014 at 2:50 AM Photosynthesis is a process that converts carbon dioxide into organic compounds in presence of sunlight. Respiration is the set of metabolic reactions that take in cells of living organisms that convert nutrients like sugar into ATP (adenosine tri phosphate) and waste products. Processes in photosynthesis are divided on basis of requirement of sunlight while respiration processes are divided on basis of requirement of oxygen. Hence in photosynthesis you have the light dependent reactions and the dark reactions while inrespiration there is aerobic respiration and anaerobic respiration.
- Item 1
- Item 2
EmoticonEmoticon