biology help

posted by miyagi

Does photosynthesis require energy? What type of energy reaction would photosynthesis
be? Is photosynthesis an example of a coupled reaction?

  1. Capreeca

    What does photosynthesis require ?
    Photosynthesis requires light energy which is captured by special pigments, most notably chlorophyll. This energy is used to create energy-rich carbohydrate molecules (sugar and starch) out of carbon dioxide (CO2) and water (H2O). During this process oxygen (O2) is released as a by-product. All the oxygen in the Earth's atmosphere which is used by animals and plants for respiration, originates as a by-product of photosynthesis.

    The process may be summed up in the following formula : CO2 + 2H2O >> CH2O + O2 + H2O

    Photosynthesis has two major processes
    Photosynthesis may be subdivided into two major processes:

    The light dependent reactions require sunlight so as to utilise its energy to produce the energy-rich molecules ATP and NADP. This phase of photosynthesis is also known as the light phase as it requires light energy.

    The light independent reactions utilise the energy-rich molecules ATP and NADP which were produced in the light phase. The ATP and NADP are used to produce energy-rich carbohydrate molecules (simple sugars) which can be stored and used as a basis for all other forms of organic molecules. This phase of photosynthesis is also known as the Calvin cycle or dark phase as it does not require light energy.

    To sum it up. Yes it requires energy and yes it is a coupled reaction.

  2. miyagi


Respond to this Question

First Name

Your Answer

Similar Questions

  1. biology

    How does photosynthesis work? wikipedia has stuff type photosynthesis in google! or type this in google "how stuff works photosynthesis" Well,basically just go to google and search it up!LOL! Go search it on Google!
  2. Biology

    Write an equation to summarize the photo reaction of photosynthesis. Since this is not my area of expertise, I searched Google under the key words " photosynthesis equation " to get these possible sources: (Broken Link Removed) …
  3. Chemistry

    Another fill in the blank Show the chemical reaction equation for the process known as photosynthesis by filling in the blanks below ________+______+________ ---> _____+________ search for photosynthesis reaction on Google.

    I am doing an ap biology lab on plant photosynthesis. It's specifically lab # 4 on plant pigments and photosynthesis and it's on question # 8 on Exercise 4B: Photosynthesis/ The Light Reaction. Identify the function of each of the …
  5. bio lab

    Why photosynthesis does not occur in calibration tube which has water and chloroplast?
  6. Science

    Cave ecosystems are characterized by extremely low light levels. What role does photosynthesis play in a cave ecosystem?
  7. Science

    What is the cell structure involved in photosynthesis and respiration?
  8. why does photosynthesis require energy

  9. Biology

    What is the overall chemical formula for photosynthsis?
  10. Biology

    light energy is converted to chemical energy in the process of Photosynthesis?

More Similar Questions