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The concentration of K+ inside the cell is 30 time more than outside. Hypoxia causes loss of this intracellular Kalium and consequent/premature repolarization when measuring the potential of action. As the all the ECG theory is Vector based, any abnormality in the electric pathways and myocytes will result in changes of ECG. This picture depicts the ST ...


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ALiceD's comment is perfectly true. (Though in real cases, the short circuiting is seldom absolute as there is usually some finite resistance in the short circuiting wire.) You can understand this in two ways. Intuitively, the uncoupling provides a channel for the hydrogen ions to move across the membrane in the direction of their electrochemical gradient ...


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Your eyes can dilate behind sunglasses, especially when the main source of light (the sun) is blocked, and ambient light decreases. Regular sunglasses offer some protection against certain UV wavelengths, but not enough to protect your eyes when looking directly at the sun (or, during an eclipse, the corona). Most sunglasses are mainly designed to, first and ...


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I'm interpreting "durability" as the DNA's resistance to physical stress, such as shearing. The Bustamante lab at UC Berkeley does a lot of very cool single-molecule biophysics looking at forces involved in protein-protein interactions and protein-DNA interactions. This Bustamante et al. review paper, Single-molecule studies of DNA mechanics includes a look ...


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Short answer Action potentials are mediated by electric currents and can be modeled by electronic circuits. Background An electric current is the flow of charge. Therefore, action potentials are mediated by current flow. However, action potentials are mediated by the flow of ions across the membrane (Fig. 1), whereas current flow in electric circuits is ...


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First of all, electric current is defined as movement of charges, $I=\frac{dQ}{dt}$. In electronics that you see around that is not very useful definition, because electrons move much slower than signals, that is changing electric field. Speed of electric field propagation reaches speed of light, whereas electrons move at 1%-30% or $c$. In biology, ...


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Have a look at this paper. They have isolated a chromoprotein similar to GFP, and like the latter it does not have any prosthetic group. This protein — asFP595 (because it was isolated from the anemone Anemonia sulcata.), is purple coloured under white light and also exhibits a little fluorescent emission in the red region (λmax = 595 nm). Also have a ...


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You are looking for light-emitting proteins. They gather energy from either absorption of photon (fluorescence) or via random thermal fluctuations. Problem is that fluorescence might be considered forced emission, whereas what you looking for is results of spontaneous transitions. That means that number of photons per second you can expect from latter ...


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What I think would be a rough estimate (ignoring the physical/thermal requirements for diamond creation) TL;DR -- It's about 68W/m2 given the caveats below. Also: Disclaimer: This is the best way I could think of to figure it out. It is a rough estimate only, and your level of desired precision will introduce more complicated calculations than the ones ...


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Just a speculation for whether diamond berries could exist or not. This is not an answer for "what is the energy uptake rate of plants" because the actual question tends to be "whether a plant can gather enough energy to form diamonds". For energy uptake rate of plants please see MCM's answer. Even though enthalpy of formation is same as heat required for ...



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