Q- In a case of blood flow obstruction to an alveolus, which of the following changes in ventilation/perfusion ratio, Po2 in the alveoli and Pco2 in the alveoli respectively most likely occur?
Q- Which one of the following is the function of retinoblastoma gene in a normal person?
A- It codes for GAP
B- It inactivates P21
C- It prevents apoptosis
D- It stops the cell cycle before S phase
Q- A mass is found in an abdominal CT scan of a 54-year-old woman. Which of the following indicates that this mass is malignant?
A- Cellular necrosis
C- Presence of mitosis
D- Size of the mass