Elodea 24. On the basis of your knowledge of osmosis, predict what will happen to the water in Elodea cells. 25. Diagram the appearance of one Elodea cell (1) mounted in water, and (2) mounted in salt solution. Plasmolyzed (2) Normal (1)
Electron Transport Chain
The electron transport chain, also known as the electron transport system, is a group of proteins that transfer electrons through a membrane within mitochondria to create a gradient of protons that drives adenosine triphosphate (ATP)synthesis. The cell uses ATP as an energy source for metabolic processes and cellular functions. ETC involves series of reactions that convert redox energy from NADH (nicotinamide adenine dinucleotide (NAD) + hydrogen (H)) and FADH2(flavin adenine dinucleotide (FAD)) oxidation into proton-motive force(PMF), which is then used to synthesize ATP through conformational changes in the ATP synthase complex, a process known as oxidative phosphorylation.
Metabolism
Picture a campfire. It keeps the body warm on a cold night and provides light. To ensure that the fire keeps burning, fuel needs to be added(pieces of wood in this case). When a small piece is added, the fire burns bright for a bit and then dies down unless more wood is added. But, if too many pieces are placed at a time, the fire escalates and burns for a longer time, without actually burning away all the pieces that have been added. Many of them, especially the larger chunks or damp pieces, remain unburnt.
Cellular Respiration
Cellular respiration is the cellular process involved in the generation of adenosine triphosphate (ATP) molecules from the organic nutritional source obtained from the diet. It is a universal process observed in all types of life forms. The glucose (chemical formula C6H12O6) molecules are the preferred raw material for cell respiration as it possesses a simple structure and is highly efficient in nature.
Osmosis is the process of movement of molecules from low concentration to high concentration through a semipermeable membrane. Due to differences in concentrations, the osmotic gradient is created at both sides of the membrane. As these molecules are distributed evenly in space and get balanced i.e reached the state of equilibration. This is passive transportation which means it does not require energy for the transportation of molecules. Osmosis plays important role in both plants and animals. In plants, it helps in maintaining the stability of cells, photosynthesis, and plant roots draw water from the soil. In animals, it plays important role in the distribution of nutrients removal of metabolic wastes from the body.
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