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The dehydration is a very common problem seen in elderly individuals. At an elderly age, all the body functions are diminished, which lead to reduction in thirst and body's ability to obtain water. That is why, the elderly people are very susceptible to dehydration.
In order to remain healthy, a person must take 2.5- 4 litres of water per day. In males, the water is required more than females. So, for males, the adequate intake (AI) of water should be in between 3-4 litres per day.
The answer is A - Ribosome.
Protein synthesis is probably one of the most vital aspects of what cells do. It occurs in ribosome and is different for prokaryotes and eukaryotes. It is important to know that proteins represent the building block for a lot of tissues which is why their importance cannot be overstated.