SSC FCI AG-III Mains Exam – Biological Science Paper (Part III)

SSC Food Corporation of India (FCI) Recruitment Exam 2012

Main exam for Assistant Grade – III Posts
Solved Paper of Biological Sciences held on 15 April 2012
PART-III [101-150] (correct answers are highighted in deep saffron color)
101. Amino acids are used as food additives for which of the following reasons?
       a) As natural antibiotics
       b) As natural growth inhibitors

       c) For nutritive purposes
       d) As antioxidants
Nyctalopia also called Night blindness is caused by defficiency of vitamin A.
102. Lycopene is an important antioxidant normally present in high level in
       a) Artichokes

       b) Bananas
       c) Tomatoes
       d) Soyabeans
103. The most common hydrocarbon in natural gas is
       a) Methane
       b) Butane
       c) Propane
       d) Ethane
104. The main effect of DDT on birds is
       a) fewer feathers
       b) reduced growth
       c) blindness
       d) thinner egg-shell
105. Which of the following is most hazardous?
       a) Crop waste
       b) Yard waste
       c) Paper waste
       d) Battery
106. The fertile part of soil is
       a) mineral water

       b) soil air
       c) humous
       d) soil water
107. The main source of air pollution is
       a) Factory exhaust
       b) Automobile exhaust
       c) Firewood
       d) Bad breath
              The major source of air pollution in industrialized countries is car exhaust. Vehicular exhaust is a major
              source of carbon monoxide. Carbon monoxide (CO) is highly dangerous. You can’t see it or smell it. In 
              fact it is often called “The Silent Killer”. Even a short term exposure to high levels of Carbon monoxide 
              can aggravate lung disease causing Asthma attacks.
108. Majority of all living species on the Earth are found in
       a) Tundra region
       b) Antarctica
       c) Tropical rainforest
       d) Temperate region
109. Cell organelle found only in plants
       a) Mitochondria
       b) Plastids
       c) Golgi complex
       d) Ribosomes
110. Enzymes are polymers of
       a) Amino acids
       b) Fatty acids
       c) Sugar
       d) Ribosomes
111. Which trait can effectively be confered into a plant by a transgene?
       a) Resistance to insects
       b) Resistance to humans
       c) Tolerance to light
       d) Tolerance to snowfall
112. What is the general term used to describe the degradation of pollutants using a biological apporach?
       a) Biostimulation

       b) Bioremediation
       c) Biodegradation
       d) Bioprocessing
113. Which genera of micro-organisms have the most diverse pathways for bioremediation?
       a) Pseudomonas
       b) Salmonella
       c) Legionella
       d) Colletotrichum
114. What is nanotechnology?
       a) The individual manipulation of molecules and atoms to create materials with novel
           or improved properties

       b) The creation of new terms to describe very small, almost unimagniable particle in physics
       c) The terms used to describe the size of cellular components
       d) The transition of molecular biology into the physical sciences
115. The colourless, odourless, tasteless radioactive gas present within homes and buildings is
       a) Argon
       b) Radon
       c) Xenon
       d) Krypton
116. Pedology is the study of
       a) Rock
       b) Coal
       c) Ecosystem
       d) Soil
117. The absorption of zinc in the human digestive tract may be inhibited by the presence of 
       a) Plant fibre
       b) Animal fibre
       c) Water
       d) Oil

           Zinc absorption is inhibited by phytic acid or phytates – phosphorus compounds – present in cereal grains.
               Phytate is not digestible to humans or nonruminant animals. Phytic acid is a substance found in cereal grains,
               nuts, seeds, and legumes that prevents premature germination and stores nutrients for plant growth. It also 
               reduces the absorption of the important minerals Ca, Mg, Fe and Zn when consumed by humans. Phytic acid
               also has potential to reduce the digestibility of protein.

118. A species that is unique to a defined place or region and not found anywhere else is called
       a) Endangered
       b) Endemic
       c) Indigeneous
       d) Extinct
119. The main cause of global rising sea levels is
       a) Thermal expansion
       b) Melting of glaciers
       c) Melting of polar ice
       d) Melting of Antarctica
120. Anemometer is used to measure 
       a) wind density
       b) wind velocity
       c) wind speed
       d) wind gravity
121. Ketone bodies are produced by
       a) brain
       b) liver
       c) kidney
       d) muscles
               Ketone bodies are manufactured by the Liver when too much protein is being used for energy.
122. Normal urine has the following components
       a) Chlorides
       b) Glucose
       c) Urea
       d) Creatinine
123. The most peneterating rays are
       a) alpha rays
       b) beta rays
       c) gamma rays
       d) delta rays
124. At what stage of cell division does the centromere divide?
       a) Prophase

       b) Telophase
       c) Metaphase
125. Genetic mapping is based on the linkage between
       it on to a second substrate.
       a) loci
       b) muton
       c) recon
       d) cistron
               Genetic linkage is the tendency of certain loci or alleles to be inherited together.
126.Most of the plants obtain nitrogen from the soil in the form of
       a) nitrate
       b) nitrite
       c) nitric acid
       d) nitrogen gas
         Nitrate (NO3) is the second form of nitrogen which is available for plant uptake. In most soils, nitrate is highly mobile.
127. The shape of metacentric chromosome is
       a) T-shaped
       b) Rod shaped
       c) S-shaped
       d) V-shaped
128. Which of the following is not an autoimmune disorder?
       a) Diabetes mellitus
       b) Haemolytic anemia
       c) Rheumatic fever
       d) Cholera
129. The natural anticoagulant of blood in the vessle is
       a) EDTA
       b) Oxalate
       c) Citrate
       d) Heparin
130. Western blotting technique is used to detect the
       b) DNA
       c) mRNA
       d) rRNA
131. Which of the following is not a renewable energy resource?
       a) Wood
       b) Wave
       c) Biogas
       d) Natural gas
132. Streptomycin is used to cure the diseases caused by
       a) Bacteria
       b) Virus
       c) Yeast
       d) Fingi
133.Antihaemorrhagic vitamin is also called as
       a) Vitamin E
       b) Vitamin K
       c) Vitamin D
       d) Vitamin B12
134. The study of the action is known as 
       a) Pharmacognosy
       b) Pharmacology
       c) Pathology
       d) Parasitology
135. Cholesterol level in blood is increased in all except
       a) Nephrotic syndrome
       b) Obstructive jaundice
       c) Hypoparathyroidism

       d) Hyperthyroidism
136. COLA refers
       a) Crystine ornithine leucine arginine
       b) Crystine ornithine lysine alanine
       c) Crystine ornithine leucine alanine
       d) Crystine ornithine lysine arginine
137. Erythropoietin, the hormone involved in synthesis of RBCs, is released to blood circulation by 
       a) red blood cells
       b) bone marrow erythroid progenitor cells

       c) renal cells
       d) hepatic cells
138. Which among the following does not bind calcium?
       a) Calcitonin
       b) Calbindin
       c) Calcineurin
       d) Calmodulin
139. Plasma bicarbonate is transported across red blood cells by
       a) Pectrin
       b) Ankyrin
       c) Carbonic anhydrase
       d) Band 3 protein
140. Assertion (A)  : Animals store energy in the form of triglycerides.
       Reason (R)     : Triglycerides can be converted to glucose whenever needed.
       a) Both A and R are true, and R is the correct explanation of A
       b) Both A and R are true, and R is not the correct explanation of A
       c) A is true and R is false.     
       d) A is false and R is true.

           Glucose is the form of sugar used by human body as fuel to create energy in the cells. Humans and other
           animals store energy (which are not needed for immediate use) in the form of fat (triglycerides) in specialized
           cells called adipocytes (which means “fat cells.”). Insulin triggers the formation of triglycerides. Some cells, 
           such as brain cells, can only use glucose for energy. A portion of the triglyceride molecule i.e. glycerol molecule
           contained in triglycerides can then be  converted to glucose.

141. The device used to introduce air into the liquid in a fermentor is termed as
       a) impeller
       b) baffles
       c) sprager
       d) thermostate
142. The Indian Collection of Industrial Microorganisms is located at
       a) Chandigarh
       b) Pune
       c) Punjab
       d) Delhi
143. The first virus crystallised by Stanely in 1935 was
       a) Cauliflower mosaic virus
       b) Tobacco mosaic virus
       c) Gemini virus
       d) Wound tumour virus
144. During World War II, the microorganism used as an agent of bio-terrorism was
       a) Bacillus anthracis
       b) Brucella abortus
       c) Resinia pestis
       d) Clostridium botulinum
145. The complete viral particle is known as
       a) Virion
       b) Viroid
       c) Prion
       d) Virusoid

               A complete virus particle, known as a virion, consists of nucleic acid surrounded by a protective coat of 
              protein called a capsid.The virion has a spherical(ish) shell covered with surface proteins, and inside the
              genome is made up of only 1 type of nucleic acid (DNA or RNA). They have no metabolic activity outside 
              the living cells. So a virion must rely on the metabolism of the cell it infects. The function of the capsid is to
              protect the nucleic acid from inactivation by nucleases and other deleterious agents in the environment.

146. The discovery of human blood group was made by
       a) Emil Von Behring
       b) Ehrlich
       c) Landsteiner
       d) Milstein

              Karl Landsteiner won the Nobel Prize in 1930 for his discovery of the ABO blood groups. He discovered that 
              there are several types of human blood and established the ABO-system based on haemagglutination.

147. “Penicillin” the wonder drug was discovered first by Alexander Fleming from the culture of
       a) Penicillium notatum
       b) Penicillium chrysogenum
       c) Penicillium funiculosum
       d) Penicillium stoloniferum
148. The term Cistron means a 
       a) unit of function
       b) unit of mutation
       c  unit of recombination
       d) unit of linkage
149. Who developed the Rabies vaccine?
       a) Robert Koch
       b) Robert Gallo
       c) Walther Hesse
       d) Louis Pasture

              French chemist and biologist Louis Pasteur successfully tests his rabies vaccine on a human subject in 1885.
              On July 6, 1885, the vaccine was administered to Joseph Meister, a 9-year-old boy who had been attacked 
              by a rabid dog.

150. Sugar in the nucleotide is
       a) Hexose
       b) Pentose
       c) Priose
       d) Heptose
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