NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc.: Zoology MCQs (Practice_Test 47 of 112)
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- Restriction-modification system of bacteria exists to
- promote conjugation
- encourage recombination of new genetic material
- promote complementation
- protect bacteria from invading foreign
- DNA
- With reference to the enzymes in mitochondria, match List-I (Location in Mitochondria) with List-II (Enzymes) and select the correct answer using the code given below the Lists
Table Supporting: NET, IAS, State-SET (KSET, WBSET, MPSET, Etc.) , GATE, CUET, Olympiads Etc. : Zoology MCQs (Practice_Test 47 of 112) List-I List-II - Outer membrane
- Inner membrane
- Inter-membranal space
- Matrix
- Adenylate kinase
- Fatty acid CoA ligase
- Malate dehydrogenase
- Succinic acid dehydrogense
- A
- B
- C
- D
- 2
- 1
- 4
- 3
- 2
- 4
- 1
- 3
- 3
- 1
- 4
- 2
- 3
- 4
- 1
- 2
- Consider the following enzymes:
- ATPase
- Add phosphatase
- Glucose-6-phosphatase
- Which of the above enzymes is/are present in the Golgi complex of animal cells?
- 1 only
- 2 and 3 only
- 1 and 3 only
- 1,2 and 3
- Which one of the following statements is not correct?
- In deoxyribose, the phosphate is attached to 3, carbon and the hydroxyl group is attached to 5՚ carbon
- Any nucleic add has a 3 ‘end and a 5’ end
- A gene is always written from 5՚ end
- The length of the promoter sequence varies from gene to gene
- A sequence of nucleotides on DNA ‘CATCATCATCAT’ is changed through mutation to ‘CAATCATCATCAT’ What is this type of mutation called?
- Frame shift
- Transition
- Transversion
- Nonsense
- Consider the following statements:
- Histones are found in all organisms that have nuclei.
- There are eleven types of histones.
- Histones are removed temporarily during transcription.
- Any change in the amino acid sequence of histone proteins is harmless for the organism.
- Which of the statements given above is/are correct
- 1 only
- 2,3 and 4 only
- 1 and 3 only
- 1,3 and 4 only
- As an antibiotic inhibiting protein synthesis, what is the specific action of Rifamycin?
- Inhibition of elongation at transcription in eukaryotes
- Denaturing RNA polymerase thereby blocking initiation at transcription in prokaryotes
- Inhibition of recognition on mRNA in both prokaryotes and eukaryotes
- Blocking binding at A-site or causing misreading of codon in prokaryotes
- Which among the following are the precursor amino acids for purines?
- Arginine and Tyrosine
- Aspartate and Glycine
- Histidine and Tyrosine
- Methionine and Tryptophan
- Bacterial cells can be rendered more permeable to the uptake of plasmids by treatment with
- heat
- calcium, phosphate
- alkali detergent
- ultrasound or magnetism
- Which one of the following human genes has the longest stretch of DNA (~24 Mb) ?
- Globin gene
- Histone gene
- Dystrophin gene
- Insulin gene
- Consider the following statements:
- Chloramphenicol does not. Affect mitochondrial protein synthesis.
- Mitochondria employ f-methionine as the initiating amino acid.
- 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 cells is diploid?
- Primary polar body
- Spermatid
- Primary spermatocyte
- Spermatozoon
- Consider the following statements: A mammalian protein expressed in E. Coil by means of recombinant DNA technology can lack
- glycosylation
- phosphorylation
- Which of the statements given above is/are correct?
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 nor 2
- Hormones are thought to regulate gene activity primarily at the level of
- transport of RNA from nucleus to cytoplasm
- post-translation processing of protein
- transcription
- translation
- Match List-I (Structures) with List II (Organisms) and select the correct answer using the code given below the lists:
List-I | List-II |
|
|
- A
- B
- C
- D
- 3
- 4
- 1
- 2
- 3
- 1
- 4
- 2
- 2
- 4
- 1
- 3
- 2
- 1
- 4
- 3