Gated transport Study guides, Revision notes & Summaries

transport proteins - are responsible for controlling passage across the membrane fluid mosaic model - The membrane is a mosaic of protein molecules bobbing in a fluid bilayer of phospholipids fatty acid tails - nonpolar, hydrophobic fatty acid heads - hydrophilic, polar periphial proteins - bound to the surface of the membrane integral proteins - penetrate the hydrophobic core (ones that span the membrane are transmembrane protiens How do cells recognize each other? - by binding to molec...

NR 546 Midterm Exam 2023/2024 Questions AND Answers Update A+ What should the PMHNP consider when prescribing chemical restraints? - Answer-- allergy status -prior med hx for adverse drug reactions r/t the meds ordered in the chemical restraint -state regulations regarding chemical restrains must be reviewed Are the PMHNP and other staff liable if the client has an allergic reaction or adverse side effects to the drugs used for chemical restraint? - Answer-No. The client has been court-...

NURS 8022 Exam 1 Questions With Correct Answers 100% Negative Feedback - ANSWER Promotes stability; cancels out the original response. Ex: High FSBS, increased insulin by the pancreas Positive Feedback - ANSWER Promotes a change in one direction; instability, DISEASE. Ex: Blood clotting, platelet cascade Proteins - ANSWER Provide selectivity to a membrane Integral proteins - ANSWER channels, pores, carriers, enzymes, receptors, second messengers Peripheral proteins - ANSWER Enzy...

Porth's Essentials of Pathophysiology 5th edition TEST BANK By Tommie With Verified Questions And Answers Graded A + Chapter 1 1.Although the basic structure of the cell plasma membrane is formed by a lipid bilayer, most of the specific membrane functions are carried out by: A) Bound and transmembrane proteins B) Complex, long carbohydrate chains C) Surface antigens and hormone receptors D) A gating system of selective ion channels Ans: A Feedback: The functions of plasma membra...

TEST BANK FOR PORTH'S ESSENTIALS OF PATHOPHYSIOLOGY 5TH EDITION BY TOMMIE L. NORRIS ALL CHAPTERS COVERED ISBN-10; 1975107195/ ISBN-13; 978-1975107192/ GRADED A Page 1 Porth's Essentials of Pathophysiology 5th edition TB_ 1. Chapter 1 Although the basic structure of the cell plasma membrane is formed by a lipid bilayer, most of the specific membrane functions are carried out by: A) Bound and transmembrane proteins B) Complex, long carbohydrate chains C) Surface antigens and ho...

Exam 2: BIO1201/ BIO 1201 Study Guide (Latest 2024/ 2025 Update) | Questions and Verified Answers| 100% Correct| Grade A – LSU Q: transport proteins allow passage of hydrophilic substances across the membrane Q: carrier proteins Answer: bind to molecules and change shape to shuttle them across the membrane Q: passive transport Answer: the diffusion of a substance across a membrane with no energy investment Q: Diffusuion Answer: Spreading out of partic...

PHA2022 Pharmacology considers: - Pharmacotherapy: o Drug-response relationship o Selectivity of action o Structure-action relationship Lecture 1 1. Define the terms pharmacodynamics and pharmacokinetics 2. Describe (with examples) the non-specific ways in which drugs can produce therapeutic effects 3. Discuss the four specific molecular targets of drug action 4. Explain the importance of selectivity and how drugs can produce unwanted effects ONE Pharmacodynamics: how the drug acts o...

Psychopharm Exam 1 practice 170 Questions with Verified Answers The PMHNP is evaluating a 68-year-old man for symptoms of major depression. While assessing the appearance of the patient, an obvious left-sided ptosis is noted. Which cranial nerve is directly linked to this condition? a. III b. IV c. V d. VI - CORRECT ANSWER A A 55-year-old woman has been referred for a psychiatric evaluation for a change in personality, lack of impulse control, and increasingly reckless decision-making....

NSC EXAM #1 QUESTIONS & ANSWERS 2024/2025 the big picture of synaptic transmission - ANSWERSthumbtack causes mechanically-gated Na+ channels to open, sending an action potential down the axon using voltage-gated Na+/K+ channels, causing voltage-gated Ca2+ channels to open and activate snare proteins that bind synaptic vesicles to the membrane and causes release of NT importance of synapses - ANSWERSrich diversity allows for complex behavior; place where most psychoactive drugs act; defec...

Agonist - Competitive inhibition, binds to active site and causes a signal response in receptive tissue. Antagonist (blocker) - Competitive inhibitor, binds to active site so signal molecules cannot bind but causes no response in receptive tissue, can bind and release eventually. Apply your understanding of channels and synapses to predict how various neurotoxins affect nervous function. - Neurotoxins block receptor proteins on the post-synaptic neuron. Example: tetrodotoxin form Fugu fish...

Which of the following signaling types occurs during periods of development specifically for the secretion of growth factors? paracrine signaling Explain why a steroid hormone would require a carrier protein to transport it through the bloodstream. Steroid hormones are hydrophobic so they would need a carrier protein to carry it through the blood because carriers are hydrophilic Explain what a ligand is and give an example of one. A ligand is a molecule that has specificity for a given rece...