Proteins are formed from long chains of amino acids, and one distinguishing characteristic of amino acids is that all of them contain a nitrogen atom. When human bodies process proteins, our bodies sometimes completely dismantle the protein to its constituents. How are the nitrogen atoms from proteins removed from our bodies?

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answer: although many types of viruses can cause a common cold, rhinoviruses are the most common culprit. a cold virus enters your body through your mouth, eyes or nose. the virus can spread through droplets in the air when someone who is sick coughs, sneezes or talks. theres your answer

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