NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc.: Zoology MCQs (Practice_Test 46 of 112)
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- Consider the following statements regarding the structure of DNA
- There are three hydrogen bonds between adenine and thymine whereas between cytosine and guanine the hydrogen bonds are two.
- Irrespective of the source of DNA, the ratio of adenine to thymine and the ratio of cytosine to guanine is always one.
- Which of the statements given above is⟋are correct?
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 nor 2
- In DNA, the deoxygenation is at
- first carbon atom
- second carbon atom
- third carbon atom
- fourth carbon atom
- Consider the following statements:
- In a bacterial ribosome, the 30S subunit contains one molecule of rRNA and the large subunit contains two molecules each of three types of rRNA.
- All tRNAs have five loops caused by complementary base pairing and the anticodon is at the third loop from the 5՚ end.
- Which of the statements given above is⟋are correct?
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 nor 2
- An antibiotic that resembles the 3՚ end of a charged tRNA molecule and brings premature termination of protein synthesis is
- streptomycin
- chloramphenicol
- tetracycline
- purornycin
- The interspecific interaction between the termites and the protozoans (Trichonympha sp.) , present in the guts of termites is called
- Amensalism
- Commensalism
- Parasitism
- Mutualism
- Similarity in the appearance of two or more unpalatable species resulting over evolutionary time is called
- Mutual adaptation
- Batesian mimicry
- Mullerian mimicry
- Convergent mimicry
- The pyramids of biomass are always inverted in
- grassland ecosystem
- forest ecosystem
- pond ecosystem
- desert ecosystem
- Consider the following:
- Bandipur Wildlife Sanctuary
- Manas Wildlife Sanctuary
- Simlipal Wildlife Sanctuary
- Which of the above are tiger reserves under the Project Tiger?
- 1 and 2 only
- 2 and 3 only
- 1 and 3 only
- 1,2 and 3
- Thamin deer (Cervus eldi) is an inhabitant of
- Kanha National Park
- Keibul Lamjao National Park
- Bandipur Wildlife Sanctuary
- Periyar Wildlife Sanctuary
- Consider the following statements:
- The king cobra is ophiophagus.
- The king cobra is the only snake in the world which builds a nest.
- Which of the statements given above is⟋are correct?
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 nor 2
- Which one of the following refers to the largest tiger reserve?
- Corbett
- Sanska
- Nagarjunasagar-Srisailam
- Kanha
- Consider the following statements:
- In India, the Sangai is confined to Nagaland only.
- Four-horned antelope (Tetracerus quadricornis) exclusively live in Indian sub-continent.
- Which of the statements given above is⟋are correct?
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 nor 2
- Who discovered Polymerase Chain Reaction (PCR) ?
- James Watson
- David Baltimore
- Kary Mullis
- F. Crick
- Consider the following statements:
- Marfan syndrome is a sexlinked disorder.
- Phenylketonuna is an autosomal disorder.
- Which of the statements given above is⟋are correct?
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 nor 2
- Which one of the following conditions differentiates eukaryotic DNA replication from prokaryotic DNA replication?
- Bidirectional replication fork
- No use of an RNA primer
- Multiple origins of replication
- Use of only one DNA polymerase