0
What else can I help you with?
Why do certain colors of light support photosynthesis while others do not?
The pigments involved (e.g. chlorophyll in green plants, phycoerythrin in red algae) only absorb photons of certain energies and reflect others. This is due to the elements in the pigment molecule and how they are bound.
What happens when plants have less chlorophyll?
Plants that are unlucky enough to loose all of their chlorophyll will not be able to produce glucose through photosynthesis and will die. This is happens if the entire plant looses chlorophyll; there are other examples of plants (such as white variegated ones) where only certain portions of the leaf have no chlorophyll, in these instances the food is produced and distributed from the areas that do contain chlorophyll to those which don't.
What does a Lewis dot show?
Lewis dot structures show how an atom's electrons work together in a certain molecule. They also show what a certain molecule will look like.
What is resonance effect and inductive effect?
Resonance effect: It is a way of describing delocalized electrons within certain molecules or polyatomic ions where the bonding cannot be expressed by one single Lewis formula.A molecule or ion with such delocalized electrons is represented by several contributing structures called as resonance structures or canonical forms. Inductive Effect: It is a permanent effect. When group attached to carbon atom attract electrons from them or push the electrons toward it is called as Inductive effect.
What pigment is present in certain leaf tissues that allows a leaf to carry on its major function?
The pigment present in certain leaf tissues that allows a leaf to carry on its major function of photosynthesis is chlorophyll. Chlorophyll absorbs light energy from the sun and helps convert it into chemical energy during photosynthesis.
What waste molecule is formed in the final electron acceptor?
Water. Oxygen is the final electron acceptor and also picks up two hydrogens at the end of the electron transfer chain to form water. H2O
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.
What is a light-absorbing colored molecule?
A light-absorbing colored molecule is called a pigment. Pigments absorb certain wavelengths of light, causing them to appear colored. Examples include chlorophyll in plants, melanin in skin, and carotenoids in fruits and vegetables.
Why do certain colors of light support photosynthesis while others do not?
The pigments involved (e.g. chlorophyll in green plants, phycoerythrin in red algae) only absorb photons of certain energies and reflect others. This is due to the elements in the pigment molecule and how they are bound.
Why are resonance structures used to model certain molecules?
Resonance structures are used to model certain molecules because they provide a more accurate representation of the electron distribution in the molecule. The actual structure of the molecule is often a hybrid of the different resonance structures, which helps to explain the stability and reactivity of the molecule. Resonance structures are particularly useful for molecules with delocalized electron systems, such as aromatics or carbon-carbon double bonds.
What is the organelle that carries out the process of photosynthesis?
Chloroplasts are the organelles that carry out the process of photosynthesis in plant cells. They contain chlorophyll, the pigment that captures light energy to convert carbon dioxide and water into glucose and oxygen.
In what living organism would you find chlorophyll?
Chlorophyll is a type of pigment which is found in certain plants. Some plants which contain chlorophyll include algae and plants. Chlorophyll is green in color and accounts for most of the green found in plants.
Do all plants possess chlorophyll?
No, not all plants possess chlorophyll. Some plants, like certain types of fungi and parasitic plants, do not have chlorophyll and obtain nutrients through other means.
What is Removing an electron from an atom called?
The process of removing an electron from something is called either oxidation or ionization. Ionization is the process of converting an atom or molecule by changing the number of electrons. In certain chemical reactions, the oxidation state of an atom or molecule is changed, and this is known as oxidation. See more details in the Web Links to the left of this answer.
What must be present for chlorophyll to exist in plants?
For chlorophyll to exist in plants, they must have certain pigments that are responsible for its production. Additionally, plants must have organelles called chloroplasts where chlorophyll is located. Finally, plants need to carry out the process of photosynthesis to produce chlorophyll.
What protein absorbs certain wavelengths of light?
Chlorophyll is a protein that absorbs certain wavelengths of light during photosynthesis in plants.
What converts sunlight into sugars?
Photosynthesis that is where The energy-fixing reaction of photosynthesis begins when light is absorbed in photosystem II in the thylakoid membranes. The energy of the sunlight, captured in the P680 reaction center, activates electrons to jump out of the chlorophyll molecules in the reaction center. These electrons pass through a series of cytochromes in the nearby electron-transport system. After passing through the electron transport system, the energy-rich electrons eventually enter photosystem 1. Some of the energy of the electron is lost as the electron moves along the chain of acceptors, but a portion of the energy pumps protons across the thylakoid membrane, and this pumping sets up the potential for chemiosmosis. The spent electrons from P680 enter the P700 reaction center in photosystem I. Sunlight now activates the electrons, which receive a second boost out of the chlorophyll molecules. There they reach a high energy level. Now the electrons progress through a second electron transport system, but this time there is no proton pumping. Rather, the energy reduces NADP. This reduction occurs as two electrons join NADP and energize the molecule. Because NADP acquires two negatively charged electrons, it attracts two positively charged protons to balance the charges. Consequently, the NADP molecule is reduced to NADPH, a molecule that contains much energy. Because electrons have flowed out of the P680 reaction center, the chlorophyll molecules are left without a certain number of electrons. Electrons secured from water molecules replace these electrons. Each split water molecule releases two electrons that enter the chlorophyll molecules to replace those lost. The split water molecules also release two protons that enter the cytoplasm near the thylakoid and are available to increase the chemiosmotic gradient.
