Module 1 Practice Exam.docx

Module 1 Practice Exam **1. Which of the following best describes the principle of cell theory? ** **2. Which of the following is incorrectly paired? ** **3. How is the tonicity determined for a solution? ** **4. At the beginning, NaCl concentration is 400 mmol/L. After being dissolved in water,...

Module 1 Practice Exam **1. Which of the following best describes the principle of cell theory? ** **2. Which of the following is incorrectly paired? ** **3. How is the tonicity determined for a solution? ** **4. At the beginning, NaCl concentration is 400 mmol/L. After being dissolved in water, what is the molarity and osmolarity of the solution? ** **5. Which of the following is NOT a stage of cellular respiration? ** **6. Which cytosolic component is responsible for facilitating intracellular reactions involving the degradation, synthesis, and transformation of small organic molecules?** **7. Which cytoskeletal element is composed of intertwined helical chains of actin molecules and plays a role in muscle contraction and amoeboid movement? ** **8. Which of the following is NOT a type of membrane protein? ** **9. Which lipid is the most abundant in the plasma membrane? ** **10. What enzyme catalyzes the conversion of CP to ATP? ** **11. Imagine that a mutation causes the electron carrier molecule NADH to stop working. What would happen to the net ATP produced from aerobic metabolism**? **12. Which of the options below best describes the site of electron drop off by FADH2**? **13. Which complex is not responsible for transporting H+ from the matrix into the intermembrane space? ** **14. Where does oxidative phosphorylation take place? ** **15. How much ATP is produced from the ETC alone? ** **16. How is ATP produced in the TCA**?  **17. Which of the following is true regarding the TCA? ** **18. McArdle disease is ** **19. What type of cell junction acts like \"spot rivets\" to anchor adjacent cells together and is most abundant in tissues subject to stretching? ** **20. Which type of cell junction is primarily found within the GI tract? ** **21. What are the three main mechanisms of cell-to-cell adhesions? ** **22. Which of the following is correct regarding factors affecting the rate of net diffusion across a membrane (Ficks Law)? ** **23. Which type of pressure is exerted by a stationary fluid on an object, such as a membrane?** **24. Water can only move into the cell through Aquaporin? ** **25. At the beginning, KCl concentration was 300 mmol/L. After being dissolved in water What is the molarity and osmolarity of the solution? ** **26. If a cell with an osmolarity of 300 mOsmol/L is placed into a solution containing 100 mmol/L of KCl and 50 mmol/L of urea, what is the osmolarity & tonicity of the solution in relation to the cell? ** **27. What type of vesicular transport system does NOT fuse with lysosomes?** a\. Pinocytosis  **28. What is the primary function of the Na+-K+ pump? ** **29. In which cells does secondary active transport play a significant role in moving glucose against its concentration gradient? ** **30. The Na+-K+ ATPase pump can transport approximately how many ions per second in a single nerve cell membrane? ** **31. Which form of endocytosis is often referred to as \"cell drinking\" due to its nonselective uptake of extracellular fluid? ** a\. Phagocytosis  b\. Receptor-mediated endocytosis  c\. Macropinocytosis  d\. Osmosis **32. In exocytosis, what is the purpose of the docking markers (v-SNARE and t-SNARE) on vesicles and the plasma membrane?** a. They prevent vesicles from attaching to the plasma membrane b. They mediate the fusion of vesicles with lysosomes c. They allow for selective uptake of molecules by cells d. They facilitate the fusion of vesicles with the plasma membrane, releasing their contents **33. Why is the balance between endocytosis and exocytosis important for cells?** a. To prevent fusion with lysosomes b. To maintain a constant cell volume and membrane surface area c. To enhance immune response though phagocytosis d. To regulate the docking marker acceptors on the plasma membrane