What is the simplest definition of photosynthesis?
photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
Can we mimic photosynthesis?
The closest process to artificial photosynthesis humans have today is photovoltaic technology, where a solar cell converts the sun’s energy into electricity. That process is famously inefficient, able to capture only about 20% of the sun’s energy.
Is photosynthesis a molecular process?
During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. These sugar molecules are the basis for more complex molecules made by the photosynthetic cell, such as glucose.
How does synthetic photosynthesis work?
So, how does artificial photosynthesis work? For starters, it uses solar cells instead of chlorophyll to absorb sunlight and turn it into electricity. Artificial “leaves” also use either an artificial or an organic catalyst to split the water from the air into hydrogen and oxygen.
Can photosynthesis be replicated artificially?
Scientists have created an artificial form of photosynthesis that could reduce levels of carbon dioxide in the air, and provide solar fuel at the same time – two potential benefits to help stabilise our changing climate.
Is there synthetic photosynthesis?
Even though artificial photosynthesis technology is in its early stages and cannot yet be used in large-scale plants, it has a substantial prospective to reduce global water demand and substantiate clean energy systems by producing power and hydrogen from photonic energy directly.
Why photosynthesis is called physicochemical process?
Photosynthesis can be defined as the physicochemical process by which photosynthetic organisms use light energy to drive the synthesis of organic compounds. The photosynthetic process depends on a set of complex protein molecules that are located in and around a highly organized membrane.
How is artificial photosynthesis different from solar panels?
While the semiconductors in solar panels absorb solar energy and convert it into electricity, in artificial photosynthesis, the semiconductors absorb solar energy and store it in “the carbon-carbon bond or the carbon-hydrogen bond of liquid fuels like methane or butanol.” This difference is crucial.
Why do we need artificial photosynthesis?
Unlike most methods of producing alternative energy, artificial photosynthesis can result in several types of fuel. Liquid hydrogen can be use used as fuel for transport and can also be used in a system of fuel cells to generate electricity through a chemical reaction from mixing hydrogen and oxygen in water.
What is meant by physicochemical process?
Physicochemical processes are the normal intracellular and extracellular physical and chemical processes that are crucial for maintenance of normal homeostasis of a cell. These reactions are vital for the wellbeing of the cell and provide essential energy for its survival.
What is meant by physicochemical properties?
Physico-chemical properties are the intrinsic physical and chemical characteristics of a substance. These include appearance, boiling point, density, volatility, water solubility and flammability etc.
Can photosynthesis occur in artificial light?
Yes, photosynthesis can occur in artificial light, provided the plant receives the correct wavelength of the light spectrum.
What is molecular mimicry?
Molecular mimicry. Molecular mimicry is defined as the theoretical possibility that sequence similarities between foreign and self-peptides are sufficient to result in the cross-activation of autoreactive T or B cells by pathogen-derived peptides. Despite the prevalence of several peptide sequences which can be both foreign and self in nature,…
What is photosynthesis in chemical terms?
In chemical terms, photosynthesis is a light-energized oxidation–reduction process. (Oxidation refers to the removal of electrons from a molecule; reduction refers to the gain of electrons by a molecule.)
What are the prerequisites for molecular mimicry to occur?
The prerequisite for molecular mimicry to occur is thus the sharing of the immunodominant epitope between the pathogen and the immunodominant self sequence that is generated by a cell or tissue.
What is the molecular mimicry mechanism of autoimmunity?
Epitope spreading, also known as determinant spreading, is another common way in which autoimmunity can occur which uses the molecular mimicry mechanism. Autoreactive T cells are activated de novo by self epitopes released secondary to pathogen-specific T cell-mediated bystander damage.
https://www.youtube.com/watch?v=oNKoHgtf2yo