During embryonic development the vessels of the vasculature must correctly connect. which of the following molecules mediate this event?
a. wnt3 and frizzled
b. notch1 and jagged1
c. shh and smoothened
d. ephrin b2 and eph b4

Which type of neuroglia is found outside of the brain?

Which would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase

Where can dna be found in a prokaryotic cell