#Question id: 1104
#Unit 4. Cell Communication and Cell Signaling
Which of the following statements is true of signal molecules?
#Question id: 15703
#Unit 12. Applied Biology
#Question id: 11555
#Unit 7. System Physiology – Animal
Nitric oxide and epinephrine ________.
#Question id: 10334
#Unit 6. System Physiology – Plant
N2 combines with hydrogen to form ammonia under elevated temperature (about 200°C) and high pressure (about 200 atmospheres) and in the presence of a metal catalyst (usually iron). The extreme conditions are required to overcome the high activation energy of the reaction. This nitrogen fixation reaction, called
#Question id: 828
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of the following assistance have function to lift folding polypeptides out of the false minima in their folding funnels?