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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.
In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.
The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.
About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
![Sphygmomanometry. Photograph of a physician taking blood pressure readings with the use of a sphygmo](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_15_46_100331519.jpeg)
![The elicitation of a stretch reflex. All of the muscle spindles in a muscle are activated during a ...](https://biology-forums.com/gallery/30/medium_548020_06_06_17_12_22_56_30337504.png)