1. Ribosomes are formed in—
(A) Golgi bodies (B) Plasma membrane (C) Nucleolus (D) Cytoplasm
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2. In fluid-mosaic model of cell membrane—
(A) It contains a central bilipid layer composed of phospholipids
(B) There is a central layer composed of protein
(C) It contains polar heads which are hydrophobic
(D) It contains non-polar tails which are hydrophilic
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3. Which of the following protozoans live in gut of termites and help them digest cellulose ?
(A) Amoeba proteus (B) Trichonympha (C) Trypanosoma (D) None of these
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4. Aquatic larva of mosquito is known as—
(A) Floating raft (B) Imago (C) Maggot (D) Wriggler
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5. Crossing over of chromosomes during meiosis leads to—
(A) Loss of chromosomes (B) Production of new gene recombination
(C) Mutation (D) None of these
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6. The outer covering of cartilage is known as—
(A) Perichondrium (B) Periosteum (C) Endosteum (D) Peritoneum
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7. Mitochondria present in muscle fibres was previously known as—
(A) Sarcoplasmic reticulum (B) Sarcoplasm (C) Sarcosome (D) None of these
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8. Skin colour in humans is believed to be controlled by atleast three genes. This is an example of—
(A) Co-dominance (B) Epistasis (C) Multiple allelism (D) Quantative inheritance
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9. High level of which of the following is found in blood of gout patients ?
(A) Urea (B) Uric acid (C) Cholesterol (D) All the above
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10. SAT-chromosome separated from rest of the chromosome by—
(A) Centromere (B) Spindle fibre (C) Secondary constriction (D) None of these
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11. Theory of blood clotting is related with—
(A) Fuld and Spiro theory (B) Cascade theory (C) Hyman theory (D) Huxley theory
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12. Linings of human intestine is—
(A) Ciliated (B) Keratinized (C) Brush border (D) None of these
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13. Which of the following amino acid is sulphurbearing compound ?
(A) Methionine (B) Alanine (C) Aspartic acid (D) Arginine
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14. Fetuin is found in—
(A) Liver (B) Spleen (C) Foetus (D) None of these
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15. Chromosome number 2n – 1 is an example of—
(A) Monosomy (B) Trisomy (C) Euploidy (D) Polyploidy
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16. The protein coat of virus is called—
(A) Viroid (B) Capsomere (C) Capsid (D) Plasmid
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17. Interferons are synthesized in response to—
(A) Bacterial infection (B) Viral infection (C) Fungal infection (D) All the above
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18. Which of the following mitotic stages provides the best opportunity for preparing human karyotype ?
(A) Anaphase (B) Metaphase (C) Prophase (D) Telophase
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19. Which of the following animals has no gall bladder ?
(A) Horse (B) Human (C) Lion (D) Dog
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20. White blood cells that are non-specific killers of microbes are—
(A) B cells (B) Phagocytes (C) Killer T cells (D) Helper T cells
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21. Lymphocytes that inhibit the development and proliferation of T and B cells are—
(A) Suppressor B cells (B) Suppressor T cells (C) Mcrophages (D) Neutrophils
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22. German measles is caused by—
(A) Rubella virus (B) Varicella virus (C) Papilloma virus (D) None of these
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23. Ammonites are the fossil remains of a group of—
(A) Aphrodites (B) Mites (C) Cephalopod molluscs (D) Bony fishes
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24. Within scrotal sac, testes is supported from posterior scrotal wall by means of small cord of fibro-muscular mesodermal tissue, called—
(A) Mesovarium (B) Gubernaculum (C) Trabeculae (D) None of these
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25. Which of the following enzyme is secreted by intestinal mucosa that remain closely associated with the mcirovilli ?
(A) Disaccharidase (B) Peptidase (C) Trypsin (D) Both (A) and (B)
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