101. Hepatitis is the:
Answer: C. inflammation of the liver
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 3 of 4.
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102. Hepatitis A is transmitted by:
Answer: B. faecal-oral route
103. Hepatitis B is also called:
Answer: B. serum hepatitis
104. Hepatitis B is treated by:
Answer: B. alpha interferon
105. Hepatitis C is transmitted only through:
Answer: B. blood
106. The treatment of chronic hepatitis C is a combination of alpha interferon and:
Answer: C. ribavirin
107. A vaccine is available for:
Answer: C. Hepatitis A and B
108. The only human disease known to be caused by a viroid is:
Answer: D. hepatitis D
109. Hepatitis D viroid enters the liver cell enclosed in a capsid obtained from:
Answer: B. hepatitis B virus
110. Herpes simplex is characterized by:
Answer: B. painful fluid-filled blisters
111. Oral herpes is caused by:
Answer: B. HSV-1
112. Genital herpes is usually caused by:
Answer: B. HSV-2
113. Herpes sores last for about:
Answer: B. 7 to 10 days
114. Herpes is treated by:
Answer: C. antiviral drugs
115. Poliovirus is an:
Answer: B. enterovirus
116. Poliovirus is transmitted by the:
Answer: B. faecal-oral route
117. Paralysis in polio is due to destruction of:
Answer: B. motor neurons in the spinal cord
118. The inactivated polio vaccine is the:
Answer: B. Salk vaccine (IPV)
119. The oral polio vaccine (OPV) is a:
Answer: B. live attenuated Sabin vaccine
120. Cotton leaf curl disease is caused by:
Answer: B. Begomoviruses
121. The vector of cotton leaf curl virus is:
Answer: C. whitefly
122. Control of cotton leaf curl disease mainly depends on:
Answer: B. insecticide treatment against the insect vector
123. A characteristic symptom of cotton leaf curl disease is the development of:
Answer: B. cup-shaped leaf-like structures (enations) on leaves
124. The GDP loss of the world due to COVID-19 pandemic is more than:
Answer: C. 8.5 trillion
125. A flu vaccine is of limited use because:
Answer: B. flu virus strains evolve constantly and immune response changes over time
126. More than how many viruses cause the common cold?
Answer: D. 200
127. Prions are:
Answer: B. infectious protein particles with no nucleic acid
128. Prions were convincingly shown to exist by:
Answer: D. Stanley Prusiner
129. Prions are more resistant to:
Answer: B. UV light and heat than viruses
130. A prion disease of humans is:
Answer: B. Kuru
131. A prion disease of cattle is:
Answer: C. mad cow disease
132. Prions are composed of:
Answer: C. a single protein encoded by a cellular gene
133. Viroids are:
Answer: B. short, circular, single-stranded RNA without protein coat
134. Viroid RNA:
Answer: B. does not code for any protein
135. Viroids replicate using the enzyme:
Answer: C. RNA polymerase II
136. Which is a plant disease caused by viroid?
Answer: C. Potato spindle tuber disease
137. Viroids spread via:
Answer: B. mechanical damage, seed, pollen or biological vectors
138. Some viroids are ribozymes, meaning they can:
Answer: B. self-cleave due to catalytic properties
139. TMV infects only:
Answer: C. tobacco and related plants
140. Human cold viruses infect only the cells lining the:
Answer: C. upper respiratory tract
141. Which cells does HIV enter?
Answer: C. Certain types of white blood cells
142. Viruses are destroyed by:
Answer: B. ultraviolet rays
143. Hepatitis E is prevented by:
Answer: B. proper hygiene as no vaccine or antiviral exists
144. Which of the following can be used as a targeted drug delivery vehicle in nanomedicine?
Answer: C. Bacteriophages
145. A collection of clones containing all genes of an individual's genome is called a:
Answer: B. genomic library
146. In HIV, the lipid membrane is acquired during:
Answer: B. budding
147. The type of life cycle shown is:
Answer: B. lytic
148. The first step of this cycle is:
Answer: B. adsorption
149. The enzyme that digests the bacterial wall to let the core tube enter is:
Answer: B. lysozyme
150. The structure that enters the bacterium is the:
Answer: B. phage DNA
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.