Ligand binding Study guides, Class notes & Summaries

competitive antagonist correct answer: an agonist that "competes" for the same binding site as another substance only blocks endogenous ligand, cannot activate receptor reversible competition Competitive antagonists cause a _____ shift in the drug response curve correct answer: rightward T/F: Competitive antagonism can be surmounted by adding more agonist correct answer: True! With enough agonist, you can flood the receptors so that the angonist out competes the competitive antagon...

4 Types of receptors CORRECT ANSWER -G-protein coupled receptor: adrenergic, serotonin, dopamine, acetylcholine, dopamine,histamine, opiates -Ligand Gated Ion Channel: Acetylcholine (nicotinic) NMDA, GABA competitive/noncompetitive /allosteric (NAM, PAM (benzos), allosteric modulator) -Tyrosine Kinase Receptor: Dimers, Jac/stat, example is insulin -Steroid Hormone receptors: steroids are transported in blood by corticosteroid binding protein to CYTOSOL. Activated by Estrogen, progeste...

TEST BANK PATHOPHYSIOLOGY THE BIOLOGICAL BASIS FOR DISEASE IN ADULTS AND CHILDREN BY McCance Chapter 1: Cellular Biology MULTIPLE CHOICE 1. Which statement best describes the cellular function of metabolic absorption? a. Cells can produce proteins. c. Cells can take in and use nutrients. b. Cells can secrete digestive enzymes. d. Cells can synthesize fats. ANS: C In metabolic absorption, all cells take in and use nutrients and other substances from their surroundings. The remaini...

Which of the following is not involved in the specificity of signal transduction? A) Interactions between receptor and signal molecules B) Location of receptor molecules C) Structure of receptor molecules D) Structure of signal molecules E) Transmembrane transport of signal molecules by receptor molecules - Transmembrane transport of signal molecules by receptor molecules Which of the following is not a feature of signal transduction? A) Integration of multiple pathways toward the same d...

BIOC 3560 Midterm Exam Questions With Answers Latest 2023/2024 (Graded 100%). Select the statement that accurately describes an O2-binding curve of a globin. (A) The heme-O2 binding curve is a sigmoidal curve. (B) Hemoglobin and myoglobin have reciprocal pO2-binding curves. (C) Hemoglobin has a sigmoidal O2-binding curve. *** (D) Myoglobin has a sigmoidal O2-binding curve. (E) All of the above. 2. Which statement is false with respect to enzyme phosphorylation? (A) The modification is irr...

What is the primary storage form of fatty acids? Correct Answer-D) triglycerides A pore that simultaneously transports two different molecules in the same direction is called a(n) Correct Answer-B) symporter Which of the following may undergo transverse diffusion within the lipid bilayer? Correct Answer-A) membrane lipids In which type of reversible inhibition does binding substrate facilitate binding of the inhibitor? Correct Answer-C) uncompetitive Which of the following is a ligan...

drug action correct answers molecular changes that occur as a result of a drug or neurotransmitter binding to a receptor drug actions in the body drug effect correct answers widespread physiological or psychological changes as a result of molecular changes overall effect binding affinity correct answers how strongly a drug binds to the receptor efficacy correct answers how likely a drug is to exert a biological response once bound to the receptor pharmacodynamics correct answers fu...

ABSITE EXAM REAL QUESTIONS AND CORRECT ANSWERS COMPLETE SET | PASSED 1. The vagus nerve mediates what in the setting of systemic inflammation? Enhanced gut motility 2. What type of hormones are cytokines? polypeptide 3. Function of heat shock proteins Binding of autologous proteins to improve ligand binding 4. Omega-3 fatty acids have what affect on the inflammatory response? Decrease 5. What is a known affect of TNF? Expression of eicosanoids (like thromboxane) 6. What...

Cell Signaling and Apoptosis Types of Signaling • A ligand is a molecule that has specificity for a given receptor, and the binding of a ligand to the given receptor causes a change. • There is a wide array of cell ligands: hormones, peptides, sugars, and even small, hydrophobic molecules. • Regardless of its type, a ligand is always specific for the target receptor. This ligand-to-receptor specificity helps to regulate responses in the target cell while not impacting non-target cell...

Biol 1201 Final – Gregg Latest Update Graded A+ local signaling animal cells may communicate by direct contact, or cell-cell recognition (paracrine and synaptic signaling) cell junctions Animal and plant cells; directly connect the cytoplasm of adjacent cells paracrine signaling the target cells lie near the secreting cells synaptic signaling a nerve cell releases neurotransmitter molecules into a synapse, stimulating the target cell endocrine (hormonal) signaling Specializ...