👉 NEET Biology Examination
👉 NEET Biology Tips
👉 NEET Biology Study Material
👉 UGC Net Study Material
Instruction
- Total 15 question
- Total Marks 60
- Each Question 4 marks
- Negative marking -1 for each wrong Question
NEET CONCEPT TEST -4 | BIOLOGY | STD 12 | CHAPTER -6
1. Ribonuclease - P enzyme is required during the time of
( a ) splicing of IRNA ( b ) cleavage of larger RNA precursors
( c ) capping of mRNA ( d ) tailing of mRNA .
2. Two couples daim for same child as their own in a maternity dinic where the two new born babies got mixed up . Name the technique that can help in finding the real parents of these babies .
( a ) Human Genome Project ( b ) DNA fingerprinting
( c ) Gel electrophoresis ( d ) Gene Sequencing
3. Select the correct option from the given statements .
( i ) In prokaryotes , DNA Pol - III carries out both initiation and elongation
(ii) Gyrase functions in negative supercoiling during DNA replication of eukaryotes .
( iii ) Nitrogen bases of two polynucleotide chains form complementary pairs . ( iv ) Prokaryotic DNA is usually circular , double stranded with exon and introns . ( a ) ( i ) and ( iii ) ( b ) ( i ) and ( iv ) (c ) (ii ) and (iii) ( d ) ( i ) and (iv)
4. B - DNA is (i with a pitch helix per turn while Z - DNA is ( iii ) with ( iv ) base pairs per turn of helix ( i ) ( ii ) ( iii ) ( iv )
( a ) right handed 20A left handed 12
( b ) left handed 34A right handed 11
( c ) right handed 344 left handed 12
( d ) right handed 20 right handed 11
5. During translation for every single amino acid incorporation in peptide chain
( a ) splicing of IRNA ( b ) cleavage of larger RNA precursors
( c ) capping of mRNA ( d ) tailing of mRNA .
2. Two couples daim for same child as their own in a maternity dinic where the two new born babies got mixed up . Name the technique that can help in finding the real parents of these babies .
( a ) Human Genome Project ( b ) DNA fingerprinting
( c ) Gel electrophoresis ( d ) Gene Sequencing
3. Select the correct option from the given statements .
( i ) In prokaryotes , DNA Pol - III carries out both initiation and elongation
(ii) Gyrase functions in negative supercoiling during DNA replication of eukaryotes .
( iii ) Nitrogen bases of two polynucleotide chains form complementary pairs . ( iv ) Prokaryotic DNA is usually circular , double stranded with exon and introns . ( a ) ( i ) and ( iii ) ( b ) ( i ) and ( iv ) (c ) (ii ) and (iii) ( d ) ( i ) and (iv)
4. B - DNA is (i with a pitch helix per turn while Z - DNA is ( iii ) with ( iv ) base pairs per turn of helix ( i ) ( ii ) ( iii ) ( iv )
( a ) right handed 20A left handed 12
( b ) left handed 34A right handed 11
( c ) right handed 344 left handed 12
( d ) right handed 20 right handed 11
5. During translation for every single amino acid incorporation in peptide chain
( a ) one ATP and two GTP molecules are used
( b ) two ATP and one GTP molecules are used
( c ) one ATP and three GTP molecules are used
( d ) only one ATP is used.
6 . Which of the following is incorrect about anticodon ?
( a ) It helps in bringing a particular amino acid at proper position during translation
( b ) It occurs only in IRNA
( c ) It is complementary to a codon
( d ) I determines the position of an amino acid in a polypeptide
7. During DNA replication , unwinding of DNA strands creates tension in the uncoiled part . This tension is released by the enzyme
( a ) helicase ( b ) topoisomerase ( d ) SSBP ( d ) phosphorylase .
8. Select the correct sequence of DNA fingerprinting technique .
( i ) Fragments having VNTRS are multiplied through PCR technique ( ii )Hybridisation of VNTRs with radioactive DNA probes .
( iii ) DNA extraction from nuclei of white blood cells .
( iv ) X - ray film is developed by autoradiography .
( v ) Extracted DNA molecules are broken with the enzyme restriction endonuclease .
( vi ) DNA fragments are separated by gel electrophoresis .
( a ) ( ii ) , ( vi ) , ( iii ) , ( v ) , ( i ), ( iv ) ( b ) ( iii ) , ( v ) , ( vi ) , ( i ) , ( ii) , ( iv )
( c ) ( ii ), ( vi ) . ( i ) , ( iv ) ,(iii) ( v ) ( d ) ( iii ) . ( v ) . ( ii ) . ( vi ) ,( i ). ( iv )
9. In tryptophan operon , the initial binding site of RNA polymerase is
( a ) promoter gene ( b ) operator gene ( c ) aporepressor ( d ) corepressor .
10. Which one of the following is not a part of transcription unit ?
( a ) Promoter ( b ) Terminator ( d ) Inducer ( d ) Structural genes
11. In the experiment of Avery , Macleod and McCarty , R - type bacteria was converted into S - type bacteria only when R - type bacteria is mixed with
( a ) proteins of S - type bacteria ( b ) DNA of S - type bacteria with DNase
( c ) DNA of S - type bacteria without DNase ( d ) carbohydrates of S - type .
12. Amino acid binding site of RNA lie opposite to the
( a ) DHU loop ( b ) TY Cloop ( c ) anticodon loop ( d ) extra arm .
13. Which of the following is incorrect about rRNA ?
( a ) In eukaryotes , it is of four types .
( b ) 18S rRNA is found in larger subunit of ribosome .
( c ) It is the most abundant type of RNA .
( d ) 5S rRNA and surrounding protein complex provide binding site for RNA .
14. Central dogma in Human Immunodeficiency Virus , is
( a ) CONA RNA Protein ( b ) DNA = RNA = Protein
( c ) DNA = RNA — Protein ( d ) RNA = DNA Protein
15.A bacterial culture of E.coli is transferred to a medium without lactose . Which of the following will occur in such case ?
( a ) Permease will be produced in high amount only .
( b ) Transacetylase and permease will be produced only .
( c ) p - galactosidase will be produced only .
( d ) Enzymes of lac operon will be produced in a very low level .
( b ) two ATP and one GTP molecules are used
( c ) one ATP and three GTP molecules are used
( d ) only one ATP is used.
6 . Which of the following is incorrect about anticodon ?
( a ) It helps in bringing a particular amino acid at proper position during translation
( b ) It occurs only in IRNA
( c ) It is complementary to a codon
( d ) I determines the position of an amino acid in a polypeptide
7. During DNA replication , unwinding of DNA strands creates tension in the uncoiled part . This tension is released by the enzyme
( a ) helicase ( b ) topoisomerase ( d ) SSBP ( d ) phosphorylase .
8. Select the correct sequence of DNA fingerprinting technique .
( i ) Fragments having VNTRS are multiplied through PCR technique ( ii )Hybridisation of VNTRs with radioactive DNA probes .
( iii ) DNA extraction from nuclei of white blood cells .
( iv ) X - ray film is developed by autoradiography .
( v ) Extracted DNA molecules are broken with the enzyme restriction endonuclease .
( vi ) DNA fragments are separated by gel electrophoresis .
( a ) ( ii ) , ( vi ) , ( iii ) , ( v ) , ( i ), ( iv ) ( b ) ( iii ) , ( v ) , ( vi ) , ( i ) , ( ii) , ( iv )
( c ) ( ii ), ( vi ) . ( i ) , ( iv ) ,(iii) ( v ) ( d ) ( iii ) . ( v ) . ( ii ) . ( vi ) ,( i ). ( iv )
9. In tryptophan operon , the initial binding site of RNA polymerase is
( a ) promoter gene ( b ) operator gene ( c ) aporepressor ( d ) corepressor .
10. Which one of the following is not a part of transcription unit ?
( a ) Promoter ( b ) Terminator ( d ) Inducer ( d ) Structural genes
11. In the experiment of Avery , Macleod and McCarty , R - type bacteria was converted into S - type bacteria only when R - type bacteria is mixed with
( a ) proteins of S - type bacteria ( b ) DNA of S - type bacteria with DNase
( c ) DNA of S - type bacteria without DNase ( d ) carbohydrates of S - type .
12. Amino acid binding site of RNA lie opposite to the
( a ) DHU loop ( b ) TY Cloop ( c ) anticodon loop ( d ) extra arm .
13. Which of the following is incorrect about rRNA ?
( a ) In eukaryotes , it is of four types .
( b ) 18S rRNA is found in larger subunit of ribosome .
( c ) It is the most abundant type of RNA .
( d ) 5S rRNA and surrounding protein complex provide binding site for RNA .
14. Central dogma in Human Immunodeficiency Virus , is
( a ) CONA RNA Protein ( b ) DNA = RNA = Protein
( c ) DNA = RNA — Protein ( d ) RNA = DNA Protein
15.A bacterial culture of E.coli is transferred to a medium without lactose . Which of the following will occur in such case ?
( a ) Permease will be produced in high amount only .
( b ) Transacetylase and permease will be produced only .
( c ) p - galactosidase will be produced only .
( d ) Enzymes of lac operon will be produced in a very low level .
===========================================
If anyone want to join my WhatsApp mail me on my mail ID
indiabiologymanishmevada@gmail.com
ANSWER KEY
1. ( b ) 2. ( b ) 3. ( a ) 4. ( c ) 5. ( a ) 6. ( d ) 7. ( b ) 8. ( b ) 9. ( a ) 10. ( c ) 11. ( c ) 12. ( c ) 13. ( b ) 14. ( c ) 15. ( d )
========================================
Mail- indiabiologymanishmevada@gmail.com
Please do not enter any spam link or word in the comment box