Gastrointestinal system.Nervous System.Cardiovascular system.Musculoskeletal system
In adults, there are different forms of beriberi, classified according to the body systems most affected. Dry beriberi involves the nervous system; wet beriberi affects the heart and circulation.
The longer a patient lives with a thiamine deficiency, the more severe the symptoms of beriberi. If untreated, beriberi is fatal. When treated with thiamine supplementation and a healthy diet, most of the symptoms of beriberi can be resolved.
The most complex protein level found in biological systems is the quaternary structure, which refers to the arrangement of multiple protein subunits to form a functional protein complex.
The levels of organization of biological systems from simplest to most complex are: atoms, molecules, organelles, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, and biosphere.
Nervous System
The optimal pH for the stability and function of lysine in biological systems is around pH 7. Lysine is most stable and functions best at this neutral pH level.
The largest and most inclusive biological level among cells, tissues, organs, and organ systems is organ systems. Organ systems are made up of organs that work together to perform specific functions in the body, such as the digestive system or the circulatory system.
Eventually all body systems will see the effects of dangerous gases, but the most immediate effects will be seen by the respiratory systems and the circulatory systems.
Beriberi is caused by a deficiency of vitamin B1 also called thiamine. Thiamine is found in cereal, green vegetables, fruit and legumes. Diets which are poor in these foods can result in beriberi. In underdeveloped countries, it is mostly caused by famine. In Asian countries, it can result from "rice diets", where people eat mostly/only white rice. In developed countries, it is most commonly found in chronic alcoholism. It may also occur from malnutrition in the elderly : the "tea and toast diet".
The most recent emerging field within biotechnology is likely synthetic biology, which involves designing and constructing biological parts, devices, and systems for various applications. This field aims to engineer biological systems for specific functions, such as creating new drugs, biofuels, and materials.
B. Low intakes of whole grains is most likely to lead to beriberi. Whole grains contain important B vitamins, including thiamine (vitamin B1), which is essential for preventing beriberi.
Water is the most common solvent in natural systems. It is essential for various biological processes and is often referred to as the "universal solvent" due to its ability to dissolve a wide range of substances.