#Question id: 28208
#Unit 5. Developmental Biology
which of the following factor is a diffusible biochemical molecule that can determine the fate of a cell by its concentration?
#Question id: 4996
#Unit 11. Evolution and Behavior
An explanation for the evolution of insect wings suggests that wings began as lateral extensions of the body that were used as heat dissipaters for thermoregulation. When they had become sufficiently large, these extensions became useful for gliding through the air, and selection later refined them as flight-producing wings. If this hypothesis is correct, insect wings could best be described as
#Question id: 19098
#Unit 6. System Physiology – Plant
#Question id: 1945
#Unit 4. Cell Communication and Cell Signaling
Neonatal myasthenia gravis is thought to be caused by:
#Question id: 1606
#Unit 4. Cell Communication and Cell Signaling
transporter associated with antigen processing(TAP) is ,