Q10: English Precis and Comprehension MCQ 2007

**The ozone layer is present in:**A) ThermosphereB) StratosphereC) TroposphereD) None of these Show Answer Correct Answer: B – Stratosphere

**What organelles do plant cells have?**A) Cell wallB) VacuolesC) Both A and BD) None of these Show Answer Correct Answer: C – Both A and B

**The Pakistani population receives the largest dose of ionizing radiation from:**A) Natural sourcesB) Fallout from nuclear weapons testingC) Nuclear medicineD) Nuclear power plants Show Answer Correct Answer: A – Natural sources

**In a DNA molecule, the rule for base pairing is:**A) Adenine always bound with thymine and cytosine with guanineB) Adenine always bound with cytosine and thymine with guanineC) Adenine always bound with guanine and cytosine with thymineD) Adenine always bound with uracil and cytosine with guanine Show Answer Correct Answer: A – Adenine always bound…