1. Presence of which among the following minerals in Banana makes them slightly radioactive? [A] Sodium[B] Calcium[C] Magnesium[D] Pottasium Show Answer Correct Answer: D [Pottasium] Notes:Slight radioactivity of Banana is due to presence of K-40. 2. Bile is secreted by which of the following cells? [A] Hepatocytes[B] Brown Fat Cells[C] Lymphocytes[D] Somatocytes Show Answer Correct ..