Chapter 45.3, Problem 3CC

Summary Introduction

To check knowledge of concepts: What are the similar properties and effects of epinephrine and auxin (plant hormone).

Concept introduction:

Hormones are signaling molecules produced by animals or plants. Hormones bind only to specific cells based on the corresponding receptors and trigger cellular response. In animals, the secreted hormones reach target cells through the bloodstream, whereas in plants, hormones act locally. Epinephrine and auxin are hormones produced from animals and plants, respectively. They are signaling molecules and they stimulate particular cellular responses in their corresponding organisms.