Cell membrane Essay Samples and Topic Ideas
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cell membrane (emitting cell);Once this nerve impulse reaches the end of the axon (the connection with the other cell), the neuron itself segregates a type of chemical compounds (neurotransmitters) that are deposited in the cleft or synaptic space (intermediate space between this transmitting neuron and thepostsynaptic or receiver neuron). These segregated or neurotransmitter substances (norepinephrine and acetylcholine among others) are responsible for exciting or inhibiting the action of the other cell called post synaptic cell. There are two types of synapses in the nervous system: chemicals and electricity. Neurotransmitters are the molecules that communicate neurons with each other. They are...
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Cell membrane: it is a cell protection regulates the substances that enter and leave it, it also obtains nutrients and eliminates waste. (Audesirk, Audesirk, & Bruce, 2003) Functional characteristics of cells Nutrition: The cells feed on organic matter, that is, they take energy that are found on the outside of the cell and make it nutrients in order to fulfill each of its functions and these in turn the metabolism that is very importantin each living being. Growth: Cells are divided into other cells, that is, as in one of the postulates of cell theory it is said that a cell arises from another pre -existing is very true because through that the growth of them arises, and each...
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cell membrane antigens, plasma proteins and extracellular matrix. As we see, they are all components of the organism itself, being the most studied and that nuclear antigens are in greater proportion. We can see that in the them there is an exclusive antigen of the disease that is located in greater proportion within the nuclear antigens, we refer to the double chain DNA (DNASD). Although we can also find other antigens such as simple chain DNA and rna antigens such as SM, ro, rnp, histones and chromatins. Each of these antigens will affect different tissues, cells or organs. In conclusion, the constant existence of antigens in lupus is determined by genetic factors and the loss of tolerance that...
cell membrane, where they continued to respond to the high levels of Chr. This result suggests that CRH increases more excitation and alertness in females than in males. Although in certain situations it can be adaptive and profitable, the overactivation of the system can also be transformed into hyperexcitation, a destabilizing state that helps to generate insomnia, loss of concentration and nervousness unmotivated in humans, explaining perhaps why women are more proneto certain disorders. Although there are several well -founded hypotheses, it is still difficult to establish that these differences in the nervous system are related to the differences in behavior of both sexes and currently has not...
cell membrane of prokaryotes and in the mitochondria of the eukaryotes. Developing During breathing, oxygen acts as the final electron acceptor at the end of an electron transport chain., reason why aerobic organisms must breathe air containing oxygen to survive. However, anaerobic organisms use anaerobic fermentation or breathing to produce ATP. In this case, an atom other than oxygen is the final electron acceptor. For example, some anaerobic bacteria that live in the depths of the mud in swampy areas use a sulfate ion instead of oxygen. Hydrogen sulfide occurs as a byproduct, instead of water. This explains the smell of sulfur in many swamps and marshes. There are two main types of anaerobes:...
cell membrane to introduce substances through it. Start with this membrane forming small vesicles capable of transporting liquid substances, large molecules and microorganisms. Phagocytosis It consists of the input substances of solids with larger molecules through these mechanisms Endocytosis favors cell nutrition and the creation of lysosomes. When the gallbladder expels its content outside the cell, this mechanism is known as exocytosis process. In itself it is the skeleton of the cell, which is formed by a network of protein fibers that supports and form, organizes ornaulos cells and is heterogeneous, that is, there are different types of elements that make it up. It is present in some cellular...
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cell membrane by osmosis and, to do so, use the special transmembrane protein channels called aquoporins. Diffusion is the movement of loading particles and without load along a concentration gradient. It is the movement of these particles, in which they all collide with each other, which supplies energy for diffusion. As there are more molecules in constant motion in a concentrated solution, the particles move from a higher concentration zone to a lower concentration. Glomerular and tubulointersticial alterations. Glomerular disorders cause conditions to the semipermeable properties of the capillary membrane of the glomeruli, this makes them incorrectly filter and water to the C, and does not...
cell membrane, nucleus and mitochondria, "suffer" changes to the degree of prospering a process of tissue necrosis in its 3 phases: latent, anarchic and chromatolysis phase. The degree of destruction depends on the organ;Among those that are affected faster are the adrenal gland and the brain;The case of the pancreas and the spleen, which are organs with more friable tissue, then suffer modifications;in muscle composition organs;among them the heart, uterus or other than these such as intestinal handles and colon are more resistant to autolysis. The absence of oxygenation that allowed the modifications of pH and hydroelectrolytic. Putrefaction It is the process of decomposition of the...
cell membrane. Dystrophin loss leads to muscle fibers being transformed into adipose cells. Physiologically muscle fibers have a fusiform and polynucleated type, cell membrane is known as sarcolema and cytosol is known as sarcoplasma. Muscle fibers are composed of the union of myofibrils that contain actin and myosin filaments that are responsible for muscle contraction. In the muscle contraction process, troponin is responsible for the displacement of tropomiosine, since it is an inactive protein, with this displacement the actin and myosin can join producing muscle contraction. Calcium has a fundamental role because calcium binds to troponin and this union is the one that provides the...
cell membrane of the Elodea plant in microns Measurement instrument: Vernier App Software Pro .3.10 Independent variable: Elodea plant in isotonic solution and hypertonic solution. Measurement instrument: flask Uncertainty: 0.01 ml Contrald variables: number of measurements and experimentation time (20 min) Measurement instrument: stopwatch Uncertainty: 1 sec (depends on the stopwatch) Results ELODEA CELL MEMBRANE LENGTH INTACTED IN ISOTONIC AND HYPERTONIC SOLUTIONS ELODEA CELL LENGTH IN HYPOTONIC SOLUTION WATER WATER IN UM (MICRAS): 61.86 56.51 85.97 76.6 89.42 103.8 69.81 60.62 75.14 76.6 Elodea cell length in NaCl 1m hypertonic solution in UM...
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