Science & Technology II — SSC Practice Test Review: 30 flashcards
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1. Who proposed the model for protein synthesis in bacterial cells using DNA?
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Jacob and Monad (Monod)
2. Where does glycolysis occur in the cell?
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In the cytoplasm
3. What is the end product of glycolysis?
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Pyruvic acid
4. To rotate a generator, what do we need?
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A turbine
5. To drive a turbine, what do we need?
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An energy source (fuel)
6. Which two factors cause rapid spread of bread mould?
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Large number of spores and availability of moisture and nutrients
7. Which bacteria are useful for cleaning hydrocarbons and oil pollutants?
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Pseudomonas
8. Peripatus is a connecting link between which two phyla?
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Annelida and Arthropoda
9. To which phylum does the cockroach belong?
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Arthropoda
10. Which part of the flower is the female reproductive organ?
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Carpel (pistil)
11. Which part of the flower is the male reproductive organ?
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Stamen
12. Which process forms four haploid cells from one diploid cell?
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Meiosis
13. How does Paramoecium reproduce?
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By binary fission and conjugation
14. How does Euglena reproduce?
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By binary fission
15. What does Darwin's theory of natural selection state?
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Organisms with favourable variations survive and reproduce
16. Which Indian law protects wild animals, birds, and plants?
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Wildlife Protection Act 1972
17. What are the four key features of chordates?
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Notochord, dorsal hollow nerve cord, pharyngeal gill slits, post-anal tail
18. Who is associated with mutation theory?
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Hugo de Vries
19. What is a triplet codon related to?
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Translation
20. What are the three main characteristics of Phylum Mollusca?
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Soft body, muscular foot, mantle
21. Snail belongs to which phylum?
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Mollusca
22. Crab belongs to which phylum?
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Arthropoda
23. What are mutations?
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Changes in the DNA sequence
24. What are the two main types of mutations?
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Point mutations and chromosomal mutations
25. In cellular respiration, energy from oxidation of food is stored as which molecule?
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ATP
26. What is the energy transformation sequence in a thermal power plant?
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Chemical → heat → kinetic → mechanical → electrical
27. What is the role of RNA in protein synthesis?
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Carries the message from DNA to ribosomes
28. What is the main difference in reproduction between Paramoecium and Euglena?
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Paramoecium: binary fission and conjugation; Euglena: binary fission only
29. What is the function of the stamen?
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Produces pollen (male gametes)
30. What is the function of the carpel?
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Contains ovary with ovules (female gametes)
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