4:32120-201 FA22 Homework 02 2.docx10. When a primary signal needs to be sent to most cellsthroughout a multicellular organism, the signal most suitedfor this is aAG) neurotransmitter.AH) hormone.AI) dissolved gas.AJ) transcription factor.AK) translation elongation factorAnswer: Explanation:5G 100AM) the steroid hormonesAN) tyrosine-derived epinephrin and norepinephrinAO) serotonin and melatonin (tryptophan-derivedmammalian neurotransmitters)11. Hydrophobic primary messengers usually cause molecularchanges leading to modifications in metabolism. Examplesof hydrophobic primary messengers areExplain what are their general chemical properties.AL) thyroxine (tyrosine-derived hormone) and insulin (asmall peptide hormone)AP) auxins (tryptophan-derived plant hormones)Answer: Explanation:12. Which statement regarding cell-surface receptors iscorrect?AQ) lon-channel-coupled receptors alter the membranepotential directly by changing the permeability of theplasma membrane.DoneAR) G-protein-coupled receptors are polypeptides withseven transmembrane domains.AS) After binding their ligand, G-protein-coupled receptorsinteract with intracellular GTP-binding proteins, laterinitiating signal transduction events.AT) All of the aboveAU) None of the aboveAnswer: Explanation:13. Which of the following are secondary messengers?AV) Ca²+, GTP, CAMPAW) hormonesAX) growth factorsAY) neurotransmittersAZ) None of the aboveAnswer: Explanation:

The answers to the above questions are given below with explanation.

10. When a primary signal needs to be sent to most cells throughout a multicellular organism, the signal most suited for this is a neurotransmitter. 11. AG) AH) hormone. AI) dissolved gas. AJ) transcription factor. AK) translation elongation factor Answer: Explanation: Hydrophobic primary messengers usually cause molecular changes leading to modifications in metabolism. Examples of hydrophobic primary messengers are Explain what are their general chemical properties. AL) thyroxine (tyrosine-derived hormone) and insulin (a small peptide hormone) AM) the steroid hormones AN) tyrosine-derived epinephrin and norepinephrin AO) serotonin and melatonin (tryptophan-derived mammalian neurotransmitters) AP) auxins (tryptophan-derived plant hormones) Answer: Explanation: 12. Which statement regarding cell-surface receptors is correct? AQ) lon-channel-coupled receptors alter the membrane potential directly by changing the permeability of the plasma membrane. AR) G-protein-coupled receptors are polypeptides with seven transmembrane domains. AS) After binding their ligand, G-protein-coupled receptors interact with intracellular GTP-binding proteins, later initiating signal transduction events. AT) All of the above AU) None of the above Answer: Explanation: 13. Which of the following are secondary messengers? AV) Ca²+, GTP, CAMP AW) hormones AX) growth factors AY) neurotransmitters AZ) None of the above Answer: Explanation:

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter4: Organization Of The Cell

Section: Chapter Questions

Problem 8TYU: All of the following are true of integrins except (a) they are receptor proteins (b) they help...