- A. Topoisomerase
- B. DNA Polymerase
- C. RNA Primase
- D. Ligase
Topoisomerase is the enzyme that removes the torsional stress and supercoiling generated ahead of the replication fork during DNA unwinding. DNA polymerase synthesizes the new DNA strand, RNA primase synthesizes the RNA primer, and ligase joins Okazaki fragments.
- A. Production of alcohol by using micro-organisms.
- B. Making artificial genes.
- C. Making artificial limbs, diagnostic instruments such as ECG, EEG etc.,
- D. Hybridization of DNA of one organism to that of the others.
Genetic engineering refers to the deliberate manipulation and transfer of DNA from one organism to another, or the construction of recombinant DNA. Hence, hybridization of DNA of one organism with that of another is the correct choice. The other options describe fermentation, gene synthesis in a limited sense, and bioengineering devices, not genetic engineering.
- A. Population
- B. Fossils
- C. Soil
- D. Water
Pedogenesis means soil formation. So the correct answer is Soil.
- A. (1) - (ii), (2) - (iv), (3) - (iii), (4) - (i)
- B. (1) - (i), (2) - (iv), (3) - (iii), (4) - (ii)
- C. (1) - (iv), (2) - (iii), (3) - (ii), (4) - (i)
- D. (1) - (i), (2) - (ii), (3) - (iii), (4) - (iv)
The correct matching is: (1) Sterilization of culture room → Ethanol, (2) Fusion of protoplast → Polyethylene Glycol, (3) Solidifying agent → Agar, (4) Isolation of protoplast → Macerozyme. Therefore, option A is correct.
- A. (1) - (ii), (2) - (iv), (3) - (iii), (4) - (i)
- B. (1) - (i), (2) - (iv), (3) - (iii), (4) - (ii)
- C. (1) - (iv), (2) - (iii), (3) - (ii), (4) - (i)
- D. (1) - (i), (2) - (ii), (3) - (iii), (4) - (iv)
The correct match is option A: (1) - (ii), (2) - (iv), (3) - (iii), (4) - (i).
- A. Marine ecosystem
- B. Forest ecosystem
- C. Freshwater ecosystem
- D. Grassland ecosystem
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Log in to view solution →- A. Polymerase Chain Reaction
- B. Southern Blotting Technique
- C. Agarose Gel Electrophoresis
- D. Western Blotting Technique
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Log in to view solution →- A. Tertiary consumers → Secondary consumers → Primary consumers → Producers
- B. Producers → Secondary consumers → Primary consumers → Tertiary consumers
- C. Tertiary consumers → Producers → Primary consumers → Secondary consumers
- D. Tertiary consumers → Primary consumers → Secondary consumers → Producers
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Log in to view solution →- A. Gladiolus, Eucalyptus
- B. Petunia, Chrysanthemum
- C. Robinia pseudoacacia, Casuarina
- D. Lichens, Rose
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Log in to view solution →- A. Autopolyploid
- B. Clone
- C. Genome
- D. Haploid
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Log in to view solution →- A. Steveocide - Natural Sweetener
- B. Palmyra - Native of Brazil
- C. Palmyra sap - Fermented to give ethanol
- D. Saccharum - Abundant in Kanyakumari
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