How do endocrine hormones affect their target cells?
They cause changes in cell metabolism only. |
They stimulate the synthesis of glycogen. |
They increase the permeability of the target cell. |
They cause changes in cell metabolism and/or gene transcription. |
They affect gene transcription only. |
Answer . Endocrine hormones cause changes in cell metabolism and / or gene transcription .
How do endocrine hormones affect their target cells? They cause changes in cell metabolism only. They...
Where on the target cells are receptors for peptide hormones usually found and why? Select one: A. in the cytoplasm, because (most) peptides act via second messengers B. in the nucleus, because (most) peptides affect the metabolism of the target cells C. on the cell membrane, because peptides cannot penetrate the cell membrane D. on the cell surface, because that is where the G-proteins are located
PES How do nonsteroid hormones differ from steroid hormones? Nonsteroid hormones act via a second messenger system steroid hormones do not use a second messenger system Nonsteroid hormones bind to cytoplasmic receptors, steroid hormones bind to plasma membrane receptors. The action of nonsteroid hormones never affects gene expression, the action of steroid hormones always affects gene expression Nonsteroid hormones are fat-soluble; steroid hormones are water-soluble. Nonsteroid hormones bind to acell's DNA:sterold hormones do not bind DNA U Question 5 1...
1. What are the 2 main ways that hormones can interact with their target cells? Which chemical classes of hormones use each of the different mechanisms? Give an example of each type of hormone. 2. Hormones may interact with each other in one of 3 ways to alter body function. Describe each type of interaction and give an example of hormones involved in each one. 3. How do circulating hormones differ from paracrines & autocrines? 4. How does a portal...
Biol 71 Lab Kurushima S2020 Name: LAB 19: ENDOCRINE SYSTEM *Note: This handout is intended to help you focus on the major points covered in lab, but is in no way a replacement for lab attendance or your textbooks. You need to bring the following items with you to lab every week: • Lab Printout (available on the class Canvas site) • Textbook: Human Anatomy 9th ed. By Martini, Tallitsch and Nath. Before coming to lab each week you should...
1) Which of the following conditions is most likely to cause the lactose operon to be transcribed? A) There is more glucose in the cell than lactose. B) There is glucose but no lactose in the cell. C) The cyclic AMP and lactose levels are both high within the cell. D) The CAMP level is high and the lactose level is low. 2) How does the transcription of structural genes in an inducible operon occur? A) It occurs continuously in...
1. In paracrine signaling, the signaling molecules affects only: Target cells close to the cell from which it was secreted a. b. Target cells distant from its site of synthesis in cells of an endocrine organ Both a. and b. с. d. None of these 2. Below are listed the events that occur in cell to cell communication. Signal transduction occurs 1. 2. Plasma membrane receptor binds with a ligand A cellular response is effected 3. 4. Ligand is released...
Chapter 18 Objectives Identify the functions of the endocrine system. Identify the hormones of the anterior pituitary (including the appropriate releasing factor), stimulating hormones, target hormones, and target tissues, including normal outcomes. List the hormones of the posterior pituitary and their actions. Discuss the effects of thyroid hormone (T3, T4) and the mechanisms of thyroid hormone regulation. Discuss the effects of parathyroid hormone and the mechanisms of parathyroid hormone regulation. Identify the hormones secreted by the alpha, beta, and delta...
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Hormones are usually transported through and affect only cells with 1) A) intercellular junctions cell junctions C) blood vessels... specific receptors B) ducts... .specific receptors D) blood vessels... cell junctions 2) Hormones regulate 2) A) reproduction only B) growth, only C) metabolism, only D) Growth, reproduction, and metabolism are regulated by hormones. 3) Steroid hormones 3) A) usually difuse through the plasma membrane into...
2. Research how antibiotics affect bacterial cells. Which cell structure(s) are typically targeted? Based on this information do you think human cells are affected by the antibiotics? Include references to information sources used. 3. As mentioned in the introduction, both humans and fungi are eukaryotic. Looking at the structures found in human and fungal cells, propose one possible cellular target that would impact fungal cells but not human cells.
Staphylococcus aureus can only cause disease when the cells reach a certain population size. Explain how S. aureus senses its cell density and activates gene expression. Based on this knowledge, discuss how antibacterial drugs can be designed to disrupt virulence and why these drugs have potential advantages over antibiotics to treat S. aureus infection.