#Question id: 1473
#Unit 4. Cell Communication and Cell Signaling
A cluster of tumor cells that produces and secretes growth factors to induce surrounding cells to grow and divide is showing which type of cell-to-cell signaling?
#Question id: 5820
#Unit 8. Inheritance Biology
A new chemical pesticide developed for agricultural use was subjected to the Ames test. The rate of mutation seen in samples treated with the pesticide and liver extract was approximately half that of the samples treated with the liver extract alone; in samples treated with only pesticide, the mutation rate was about the same as that of untreated samples. Which of the following statements could you make about this pesticide?
#Question id: 11148
#Unit 7. System Physiology – Animal
Which of the following ions is most likely to cross the plasma membrane of a resting neuron?
#Question id: 8900
#Unit 9. Diversity of Life Forms
#Question id: 23732
#Unit 8. Inheritance Biology