There is active transport mechanisms in plants, so that they can take in nitrogen from areas of low concentration to

Question: There is active transport mechanisms in plants, so that they can take in nitrogen from areas of low concentration to high concentration, but is there an active transport mechanism in our body?
- Keywords:
  active transport,
  concentration,
  nitrogen,
  nutrition,
  plant
Asked by lisaloo to Claire, Kate, Matt, Rob, Sam on 24 Jun 2013.
- Sam Geen answered on 24 Jun 2013:
  
  Sure – for example, in the kidneys, active transport is used to remove urea from the blood to the kidneys, where it’s passed to the bladder so you can pee it out.
- Claire Lee answered on 24 Jun 2013:
  
  And glucose (sugar) from inside your intestine into your blood so you can take it to your cells for energy. This is important because, well, food 🙂

Question: There is active transport mechanisms in plants, so that they can take in nitrogen from areas of low concentration to high concentration, but is there an active transport mechanism in our body?