151. The integrated phage DNA is called a:
Answer: B. prophage
Biology Class 11 Unit 5: Acellular Life MCQs
170 multiple choice questions with the correct answer for each. Tap an option to check yourself, or switch on "Show all answers". This is page 4 of 4.
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152. The UV-triggered change is called:
Answer: B. induction
153. Such a phage is called:
Answer: B. temperate
154. Prophage genes can give the bacterium new properties, a process called:
Answer: C. lysogenic conversion
155. The first stage was the:
Answer: B. asymptomatic carrier stage
156. The final stage is:
Answer: C. full blown AIDS
157. The skin cancer is an example of:
Answer: B. an opportunistic disease
158. The drug combination used to control his infection is called:
Answer: C. antiretroviral therapy (ART)
159. The disease is:
Answer: B. cotton leaf curl disease
160. The causal agent is a:
Answer: C. Begomovirus
161. The best control is:
Answer: B. insecticide against whitefly
162. The role of whitefly is as:
Answer: B. vector
163. The most likely disease is:
Answer: C. hepatitis A, spread by faecal-oral route
164. A preventive step available is:
Answer: B. vaccine with inactivated HAV and good hygiene
165. Another disease spread by faecal-oral route is:
Answer: C. poliomyelitis
166. Polio causes paralysis due to damage of:
Answer: B. motor neurons in spinal cord
167. The infectious agent is a:
Answer: D. prion
168. It is composed of:
Answer: C. protein
169. A similar human disease is:
Answer: B. Kuru
170. The disease can be treated by:
Answer: D. no treatment or cure is known
About Biology Class 11 Unit 5 MCQs (Federal Board)
These 170 Biology MCQs cover Class 11 Unit 5: Acellular Life of the Federal Board (FBISE) HSSC-I (1st Year / Class 11) syllabus. They are SLO-based MCQs as per the new pattern for FBISE exams. Each question has four options and the correct answer is shown, so you can practise for the annual examination and find the topics you still need to revise. The questions are split over 4 pages of 50. Use the Print button to save this chapter as a PDF.