Tyrosine kinase receptors are __________.   A) Group of answer choices B) Intracellular receptors C) G protein coupled receptors D) Enzyme linked receptors E) Fast ligand-gated ion channels F) Steroids

Viagra works on which intra-cellular signaling pathway? a)PLC, DAG, PKC b)RTK, RAS, MAPK c)GPCR, PKB, calmodulin d)Acetylcholine, Nitric Oxide, cGMP e)GPCR, cAMP, PKA

Q26

Cellular disarray in the nerve cells of a person with schizophrenia means that the nerve cells appear: Question 5 options: a)  Smaller b)  Larger c)  Organized d)  Disorganized

Question 11 When treating bacterial meningitis, which of the following drug classes should be co-administered with antibiotic therapy? Question 11 options: a) Beta-blockers b) Antiviral medications c) Antiseizure medications d) Dexamethasone, a corticosteroid drug

Which of these flavors do not have specific receptors? a) sour b) salt c) sweet d) umami e) spicy

12. Which statement regarding cell-surface receptors is correct? A) lon-channel-coupled receptors alter the membrane potential directly by changing the permeability of the plasma membrane. B) G-protein-coupled receptors are polypeptides with seven transmembrane domains. C) After binding their ligand, G-protein-coupled receptors interact with intracellular GTP-binding proteins, later initiating signal transduction events. D) All of the above E) None of the above Answer: Explanation:

Generally, for a positive feedback arc to cause a change of a physiological variable, where must be the receptor? Multiple answers: Choose all of the relevant answers from the choices below. answer choices a)Intracellular fluid b)Intersitial fluid c)Extracellular fluid d)External environment (e.g., mother's nipple) e)Blood plasma   2)Which of the following is NOT true regarding negative feedback loops and homeostasis? answer choices a. Homeostatic control systems cannot maintain complete constancy of the internal environment b. The set point of some variable can be reset c. It is always possible for physiological variables to be maintained in a relatively constant manner using homeostatic control systems d. The stability of an internal environment variable is achieved by balancing inputs and outputs e. In negative feedback systems, a change in the variable being regulated brings about responses that tend to move the variable in a direction that is opposite to the…

Please explain the correct answer