Note 7:Kerala State PSC previous Asked Science Part-1

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                                                              Science : Biology

 1.Pink disease of rubber is caused by 
 A:-Xanthomonas citri
 B:-Pythium aphanidermatum 
 C:-Phytoplasma 
 D:-Corticium salmonicolor 
                                                                Correct Answer: D

 2. Lipids are the most important constituents in 
 A:-Nucleus 
 B:-Ribosomes 
 C:-Lysosomes 
 D:-Biological membranes 
                                                                 Correct Answer:- D

 3. Cardiolipin is characteristic to
 A:-Mitochondria 
 B:-Endoplasmic reticulum 
 C:-Golgibodies 
 D:-Nucleus 
                                                                 Correct Answer:A

 4.-Osteomalasia is a disease condition caused by the deficiency of _____________ 
 A:-Isoleucine
 B:-Vitamin D 
 C:-Methionine 
 D:-Vitamin C 
                                                                 Correct Answer:B

 5.-Breathing rate in mammals is controlled by a part of the brain called the _________
 A:-Hypothalamus 
 B:-Thalamus 
 C:-Medulla oblongata 
 D:-Cerebellum 
                                                                 Correct Answer:C

 6.-Name the scientist who discovered the DNA 
 A:-Freidrich Meischer
 B:-James Watson 
 C:-Avery 
 D:-Griffith 
                                                                 Correct Answer:A

 7.The most abundant lipid in a cell membrane is 
 A:-Cutin
 B:-Glycolipid 
 C:-Steroid 
 D:-Phospholipid 
                                                               Correct Answer:-D
8. Photochemical fog always contain 
 A:-Aluminium ion 
 B:-Ozone
 C:-Methane 
 D:-Phosphorus
                                                             Correct Answer:-B
9. :-Wild Life Protection Act was enacted in
 A:-1972 
 B:-1960 
 C:-2001
 D:-1968 
                                                           Correct Answer: A
10.-The chromosome theory of heredity was proposed by 
 A:-Sutton and Bovery 
 B:-Jacob and Monod 
 C:-Bateson and Punnet 
 D:-Correns and Tschermark 
                                                           Correct Answer:A
11.The crossing over take place during 
 A:-Zygotene 
 B:-Diplotene 
 C:-Pachytene
 D:-Diakinesis 
                                                         Correct Answer: C
12. -Which type of infectious disease is known as "Thursh" ?
 A:-Giardiasis 
 B:-Cholera 
 C:-Sporotrichosis 
 D:-Candidosis 
                                                        Correct Answer:-D
13.What is "black water fever" ? 
 A:-Leishmaniasis 
 B:-Falciparum malaria
 C:-Hepatitis 
 D:-Plague 
                                                      Correct Answer:- B(Anopheles mosquitoes)

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