Answer:
Chlorophyll molecules donate electrons to an electron acceptor in the reaction center.
Explanation:
Light reaction of photosynthesis takes place in the reaction centre. Light reaction may comprises of several proteins such as pheophytin, chlorophyll and quinones which act as light absorbing molecules.
The light reaction is the core of photosynthesis that produces ATP and NADPH to carry out the dark reaction for the production of high energy carbon molecules. During light reaction light photons are captured by photosystems such as photosystem I and II of chlorophyll in green plants. This photon cause the excitation of electron that flows through the electron transport chain from higher potential to lower potential and energy released by it is utilized for creating the gradient potential of H+ ions across the membrane. This gradient potential difference of H+ ions is used for the production of ATP through ATP synthase complex.
So chlorophyll molecules donate electrons to electron acceptors through the excitation of electrons from light photons in the reaction center.
A. The answer is mutualistic because both species benefit.
An aneurysm that divides the three layers of the artery wall, as opposed to inflating out the entire wall, is known as a dissecting aneurysm.
<h3>
What causes an aneurysm to form?</h3>
Multiple circumstances that lead to the breakdown of the well-organized structural elements (proteins) of the aortic wall, which maintain and stabilize the wall, can result in an aneurysm. Uncertainty surrounds the precise cause. Aneurysmal disease is thought to be significantly influenced by atherosclerosis, which is the hardening of the arteries with plaque.
Surgical intervention can be required since an aneurysm may continue to grow in size and the arterial wall may deteriorate over time. One of the objectives of therapy is to prevent aneurysm rupture. The risk of an aneurysm rupturing increases with its size (bursting). A rupture could lead to fatal hemorrhage (uncontrolled bleeding), which is life-threatening.
For more information regarding arterial wall, visit:
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<span>These organisms are called autotrophs. Autotrophs are also called 'self-feeders,' and they are able to produce energy from sunlight and carbon dioxide and are therefore known as 'producers.' The only autotrophs that we know of are plants and some types of algae. This makes all other organisms heterotrophs</span>
