Search results
How Light-Dependent Reactions Work. The overall function of light-dependent reactions, the first stage of photosynthesis, is to convert solar energy into chemical energy in the form of NADPH and ATP, which are used in light-independent reactions and fuel the assembly of sugar molecules.
- 8.2: The Light-Dependent Reactions of Photosynthesis
How Light-Dependent Reactions Work. The overall function of...
- 10.4: The Light-Dependent Reactions - Biology LibreTexts
In the light-dependent reactions, which take place at the...
- 8.2: The Light-Dependent Reactions of Photosynthesis
How Light-Dependent Reactions Work. The overall function of light-dependent reactions is to convert solar energy into chemical energy in the form of NADPH and ATP. This chemical energy supports the light-independent reactions and fuels the assembly of sugar molecules. The light-dependent reactions are depicted in Figure 8.2.7 8.2.
In the light-dependent reactions, which take place at the thylakoid membrane, chlorophyll absorbs energy from sunlight and then converts it into chemical energy with the use of water. The light-dependent reactions release oxygen as a byproduct as water is broken apart. In the Calvin cycle, which takes place in the stroma, the chemical energy ...
- How The Light-Dependent Reactions Work
- Generating An Energy Molecule: ATP
- Generating Another Energy Carrier: NADPH
- Section Summary
- References
The overall purpose of the light-dependent reactions is to convert solar energy into chemical energy in the form of NADPH and ATP. This chemical energy will be used by the Calvin cycle to fuel the assembly of sugar molecules. The light-dependent reactions begin in a grouping of pigment molecules and proteins called a photosystem. There are two phot...
In the light-dependent reactions, energy absorbed by sunlight is stored by two types of energy-carrier molecules: ATP and NADPH. The energy that these molecules carry is stored in a bond that holds a single atom to the molecule. For ATP, it is a phosphate atom, and for NADPH, it is a hydrogen atom. Recall that NADH was a similar molecule that carri...
The remaining function of the light-dependent reaction is to generate the other energy-carrier molecule, NADPH. As the electron from the electron transport chain arrives at photosystem I, it is re-energized with another photon captured by chlorophyll. The energy from this electron drives the formation of NADPH from NADP+ and a hydrogen ion (H+). No...
The pigments of the first part of photosynthesis, the light-dependent reactions, absorb energy from sunlight. A photon strikes the antenna pigments of photosystem II to initiate photosynthesis. The energy travels to the reaction center that contains chlorophyll ato the electron transport chain, which pumps hydrogen ions into the thylakoid interior ...
Unless otherwise noted, images on this page are licensed under CC-BY 4.0 by OpenStax. Text adapted from: OpenStax, Concepts of Biology. OpenStax CNX. May 18, 2016 http://cnx.org/contents/b3c1e1d2-839c-42b0-a314-e119a8aafbdd@9.10
- Lisa Bartee, Walter Shriner, Catherine Creech
- 2017
Learn about the light-dependent reactions in photosynthesis and how they convert solar energy into chemical energy.
- You are correct. When we split the H2O, our 2 protons in the hydrogen (the h+ ions, basically just a proton floating around), the waste product of...
- ATP consists of adenosine - itself composed of an adenine ring and a ribose sugar - and three phosphate groups (triphosphate). The phosphoryl group...
- at first hydrogen ions are pushed into lumen, but as the concentration increases inside the lumen , it is going to activate the ATP synthase enzyme...
- Remember that all aqueous solutions contain a small amount of hydronium (H₃O⁺) and hydroxide (OH¯) due to autoionization§. This means that processe...
- Quite interesting question! I do not think it would be possible. Plant cells are not designed to accept/tolerate infrared or UV light (which is des...
- Electrons move down the transport chain, which creates a proton gradient, and then that gradient is used to make ATP
- Some must get used within the chloroplast for other metabolic processes, but my understanding is that most gets used to fix carbon — this uses a lo...
- ？？i am so screwed for AP bio
- I don't understand what you mean. Do you mean in ball-and-stick models, or overall? I don't think oxygen has an overall color...
When a person turns on a lamp, electrical energy becomes light energy. Like all other forms of kinetic energy, light can travel, change form, and be harnessed to do work. In the case of photosynthesis, light energy is converted into chemical energy, which photoautotrophs use to build basic carbohydrate molecules (Figure 8.9). However ...
People also ask
How do light-dependent reactions convert light energy into chemical energy?
What is the function of light-dependent reactions?
Why do light-dependent reactions release oxygen as a byproduct?
What are the light-dependent reactions of photosynthesis?
How do light-dependent reactions begin in photosystem II?
How does chlorophyll convert sunlight into chemical energy?
The reactions that make up the process of photosynthesis can be divided into light-dependent reactions, which take place in the thylakoids, and light-independent reactions (also known as dark reactions or the Calvin cycle), which take place in the stroma. 1. Chloroplasts have a complex internal structure, and different reactions take place in ...
