W23 D103 Final Exam Questions with Complete Solution Graded A+

W23 D103 Final Exam Questions with Complete Solution Graded A+ Which of the following list the order of events occurring during a signaling event? A. Stimulus, transduction, receptor, effector, response. B. Stimulus, receptor, transduction, effector, response. C. Stimulus, receptor, effector, transduction, response. D. Stimulus, response, transduction, effector. B. Stimulus, receptor, transduction, effector, response. Which of the following is not a commonly used mechanism to regulate activity of proteins in a signaling pathway? A. Phosphorylation. B. Unmasking of a nuclear localization signal (NLS). C. Proteolytic degradation. D. Protein synthesis. E. All of the above are examples of commonly used mechanisms to regulate proteins in a signaling pathway. E. All of the above are examples of commonly used mechanisms to regulate proteins in a signaling pathway. Which of the following properties would be found in a ligand that does not require a transmembrane receptor? A. It is hydrophilic. B. It can bind directly to DNA. C. It is always present at a higher concentration outside thecell relative to the cytoplasm. D. It is hydrophobic. E. It is a zwitterion. D. It is hydrophobic. Which of the following signals doesn't need a plasma membrane receptor to enter a cell? A. Insulin - a hormone. B. Adenosine - a purine nucleoside. C. HIV - a virus. D. Estrogen - a steroid hormone. E. Ferrous iron - Fe2+ D. Estrogen - a steroid hormone