0
the outer electrons which are weakly attracte towards nucleus of a pigment can absorb a photon and gets exited to its unstable higher levels. It releases more energy when it gets stabilized to its normal state. This energy can be trapped by the electron of next pigment molecules. In this way the energy gets transfered from one to other.
What else can I help you with?
What happens when a photon from sunlight strikes a chlorophyll a molecule?
When a photon strikes a pigment molecule such as chlorophyll, the energy from the photon is passed to the chlorophyll. This energy then continues to pass between molecules until it hits the reaction center, where the reaction of photosynthesis' glucose creation occurs.
How are electrons and protons used during the photosynthetic process?
(From Wikipedia; slightly paraphrased to make it easier to understand.) During the light-dependent stage of photosynthesis, one molecule of the pigment chlorophyll absorbs one photon (unit of light) and loses one electron. This electron is passed to a modified form of chlorophyll (called pheophytin), which passes the electron to a quinone molecule (another pigment), allowing the start of a flow of electrons down an "electron transport chain" that leads to the ultimate reduction of NADP+ to NADPH. In addition, this creates a "proton gradient" across the chloroplast membrane. Its dissipation is used at the same time by "ATP synthase" to make ATP from ADP. The chlorophyll molecule regains the lost electron from a water molecule through a process called photolysis, which releases an oxygen molecule (02).
Which molecule is made during the light-dependent reactions?
Photosystems are the light-harvesting units of the thylakoid membrane.Each photosystem is a complex of proteins and other kinds of moleculea and includes an antenna consisting of a few hundred pigment molecules. When any antenna molecule absorbs a photon, the energy is transmitted from pigment molecule to pigment molecule until it reaches a particular chlorophyll a.Only this chlorophyll molecule is the reaction center and the first light-driven chemical reaction of photosynthesis occures.
What happens in photopigments when they absorb photon energy?
Photosystem's electron travel through the electron transport chain(etc) where ATP is produced and then back to the photosystem. In non-cyclic photophosphorylation, Photosystem II electron then is absorbed by photosystem I, photosystem I electron used to form NADPH and photosystem II gets its electron from photolysis of water. For you unfortunate children using Novanet: They move through an electron transport chain to photosystem 1.
How does a pigment capture the suns energy?
When a photon hits a pigment, it excites the electrons in one of the double bonds in the pigment. In chlorophylls, these double bonds are the ones that are found closest to the magnesium atom at the centre of the pigment. When one of these electrons is excited by just the right wavelength, i.e. just the right energy of light, it will leave the pigment and evetually enter a series of proteins located on the thylakoid membranes collective known as the photosynthetic electron transport chain. This electron transport chain functions similarly to its animal analog in that it involves a series of redox reactions that use the energy in the electron to pump protons across the thylakoid membrane. This creates a proton concentration gradient across the membrane and ATP synthase can harvest the energy of protons moving down the gradient to make ATPs. This is a brief explanation of how light energy is converted by plants to ATPs.
What physically happens to a molecule when it absorbs a photon?
When a molecule absorbs a photon, its energy increases and the electrons in the molecule are excited to higher energy levels. This can lead to changes in the molecular structure or bond vibrations. In some cases, the molecule may undergo a chemical reaction or emit a photon in a process known as fluorescence or phosphorescence.
What gets excited when chlorophyll absorbs a photon?
electrons
What happens when light hits a pigment?
When a chlorophyll molecule absorbs a photon of light, Photons strike the "antenna" of the chlorophyll molecule. This causes electrons in the photo-reaction centers that are attached to the antennas to become excited and move to a higher energy level. That's photoexcitation. The valence electrons in Magnesium (part of the chlorophyl molecule) jump to an excited state.
What happens when carbon dioxide absorbs an IR photon?
The molecule vibrate
A pigment absorbs a photon only if the energy of the photon is?
greater than or equal to the energy gap between its ground and excited states.
What happens when a molecule absorbs a photon of infrared radiation?
When a molecule absorbs a photon of infrared radiation, its internal energy increases, causing the molecule to vibrate more rapidly. This vibration can lead to changes in the molecule's structure or interactions with nearby molecules, which can have various effects such as heating up the molecule or triggering chemical reactions.
When a molecule absorbs a photon one of the electron is raised in what state?
When a molecule absorbs a photon, an electron is raised from its ground state to an excited state. This leads to an increase in the electron's energy level, causing the molecule to become temporarily unstable before returning back to its ground state through various relaxation processes.
WHAT HAPPENS IN THE PHOTOSYSTEM 2 protein when it is hit by a photon of light?
In photosystem II, the photon of light is absorbed by a pigment molecule, which causes an electron to become excited. This electron is then passed through a series of electron carrier molecules, creating a flow of electrons used to generate ATP and NADPH during the light-dependent reactions of photosynthesis.
What best explains how green plants absorbs energy from the sun?
A photon strikes electrons in special molecules in the cells A.S.Apex go apex >A<
Can a photon be oxidized by an electron from the valence shell of a molecule?
No, photons are elementary particles and do not participate in chemical reactions like oxidation. Oxidation involves the loss of electrons by a chemical species, not a photon. Photon interactions primarily involve electromagnetic forces.
Does a photon have electrons?
No. A photon is a particle of light. It is massless.
When an color photon is emitted from some molecule that means molecule jumped from some energy level to lower and emitted it or just one of its atom's electron did?
Either scenario is possible. Some electrons are involved in covalent bonds and have an emission spectrum that depicts that extended commitment. Some electrons are more tightly involved with individual atoms and their emissions are of higher energies.
