BIOL 1511 Study Guide - Midterm Guide: Growth Hormone–Releasing Hormone, Meristem, Corticotropin-Releasing Hormone
Document Summary
Reception: hormone or environmental stimulus; receptor takes hormone (something polar cannot pass cell wall); water soluble signal molecule; receptor is bound inside membrane in order to get the signal inside: 2. Transduction: receptor relays proteins and second messengers by release of intracellular signal: 3. Response: activation of cellular response; signal targets specific gene dna: signaling pathway (nonpolar cases, steroid hormone (nonpolar); receptor in cytosol receives steroid; receptor takes steroid inside and goes to target gene dna. Individual rod shaped cells- wander around as individuals and feed: 2. Aggregation in process- food resources limited and density is high; swarm together and produce large structure; info chemical released in order to aggregate: 3. Production of extracellular polymer substances, leading to biofilm formation: 5. Two types of signal pathways: phosphorylation cascade, second messenger. Role of hormones: small, simple molecules present at very small concentrations, can be transported around plant to affect target cells, only elicit response if receptor is present.
