Figure 13-18 shows several chemicals that carry nitrogen up from the roots to the rest of the plant. What is the unusual feature of these chemicals that make them good carriers?

Figure 13-18

Transcribed Image Text:

C10 H₂N-C-C-C-c HIC-H O H Asparagine H HIN H₂N-C- HICIN H₂N-C-N. 010 || | 0 H Allantoic acid H H C-C-OH CIO || H H ||| -OH H₂N-C-C-C-C-C-OH ||||| H H N O H H Citrulline H Glutamine 0=CNH H | | HN C-N-C-NH₂ CIO H H H H H |||| H₂N-C-N-C-C-C-C-C-OH II HHH Ν Ο ||| H H H Allantoin C1O