Question

38. How is the zymogen, pepsinogen converted into Pepsin A. By an enzyme, pepsinase B. By the acid HCl in the stomach C. By misxing with the chyme in the stome D. None of the above is correct

42. A middle aged man is in a coma after a motor vehicle accident. His respiratory rate has significantly decreased due to trauma to the medulla. All of the following are true EXCEPT: A. There will be a increase in pH in the blood. B. There will be an increase in partial carbon dioxide of his blood. C. There will be a decrease in partial oxygen of his blood. D. Normal regulation of ventilation rate has been disrupted.

43. What are potential reasons that smoker's may be susceptible to a more severe COVID-19 prognosis? A. Smoking can destroy cillia, reducing the clearance of irritants and pathogens from the upper respiratory tract B. Smoking can reduce the proper funtion/activation of alveolar macrophages C. Smoking reduces surfactant levels D. A and B are correct E. A and C are correct

Answer 1

Answer-38 (B) by the HCl in the stomach.

Answer- 42 (A) There will be an increase in pH of his blood. Explanation: it is incorrect because the pH will decrease because of increased acidity due to increased partial pressure of CO2.

Answer- 43(D) A and B

Explanation: because both these reasons will make the person more susceptible to infection. If alveolar macrophages don't function properly, the pathogen won't be killed by body's innate immunity. And destruction of cilia will not expell the virus out of the body.