Select the correct match. (a) Alec Jeffreys - Streptococcus pneumoniae (b) Alfred Hershey and - TMV Martha Chase (c) Matthew Meselson - Pisum sativum and F. Stahl (d) Francois Jacob and - Lac operon Jacques Monod

Select the correct match.
(a) Alec Jeffreys - Streptococcus
 pneumoniae
(b) Alfred Hershey and - TMV
Martha Chase
(c) Matthew Meselson - Pisum sativum
and F. Stahl
(d) Francois Jacob and - Lac operon
Jacques Monod
by

1 Answer

Answer :

(a) Alec Jeffreys - Streptococcus
 pneumoniae
by

Related questions

Select the correct match. (a) Alec Jeffreys - Streptococcus pneumoniae (b) Alfred Hershey and - TMV Martha Chase (c) Matthew Meselson - Pisum sativum and F. Stahl (d) Francois Jacob and - Lac operon Jacques Monod

Description : Select the correct match. (a) Alec Jeffreys - Streptococcus pneumoniae (b) Alfred Hershey and - TMV Martha Chase (c) Matthew Meselson - Pisum sativum and F. Stahl (d) Francois Jacob and - Lac operon Jacques Monod

Last Answer : (d) Francois Jacob and - Lac operon Jacques Monod

Select the correct match : (1) Alec Jeffreys – Streptococcus pneumoniae (2) Alfred Hershey and – TMV Martha Chase (3) Matthew Meselson – Pisum sativum and F. Stahl (4) Francois Jacob and – Lac operon Jacques Monod

Description : Select the correct match : (1) Alec Jeffreys – Streptococcus pneumoniae (2) Alfred Hershey and – TMV Martha Chase (3) Matthew Meselson – Pisum sativum and F. Stahl (4) Francois Jacob and – Lac operon Jacques Monod

Last Answer : (4) Francois Jacob and – Lac operon Jacques Monod

Select the two correct statements out of the four (i – iv) statements given below about lac operon. (i) Glucose or galactose may bind with the repressor and inactivate it. (ii) In the absence of lactose, the repressor binds with the operator region. (iii)The z-gene codes for permease. (iv) This was elucidated by Francois Jacob and Jacques Monod. The correct statements are (a) (ii) and (iii) (b) (i) and (iii) (c) (ii) and (iv) (d) (i) and (ii)

Description : Select the two correct statements out of the four (i - iv) statements given below about lac operon. (i) Glucose or galactose may bind with the repressor and inactivate it. (ii) In the absence of lactose, the repressor binds with the ... (iii) (b) (i) and (iii) (c) (ii) and (iv) (d) (i) and (ii)

Last Answer : (c) (ii) and (iv)

Transformation was discovered by (a) Meselson and Stahl (b) Hershey and Chase (c) Griffith (d) Watson and Cric

Description : Transformation was discovered by (a) Meselson and Stahl (b) Hershey and Chase (c) Griffith (d) Watson and Cric

Last Answer : (a) Meselson and Stahl

Operon model of gene regulation and organisation of prokaryotes was proposed by: (a) Messelson and Stahl (b) Wilkins and Franklin (c) Beadle and Tatum (d) Jacob and Monod

Description : Operon model of gene regulation and organisation of prokaryotes was proposed by: (a) Messelson and Stahl (b) Wilkins and Franklin (c) Beadle and Tatum (d) Jacob and Monod

Last Answer : Ans. ((d))

Match the following genes of the Lac operon with their respective products. (A) i gene (i) b-galactosidase (B) z gene (ii) Permease (C) a gene (iii)Repressor (D) y gene (iv) Transacetylase Select the correct option. (A) (B) (C) (D) (a) (iii) (iv) (i) (ii) (b) (i) (iii) (ii) (iv) (c) (iii) (i) (ii) (iv) (d) (iii) (i) (iv) (ii)

Description : Match the following genes of the Lac operon with their respective products. (A) i gene (i) b-galactosidase (B) z gene (ii) Permease (C) a gene (iii)Repressor (D) y gene (iv) Transacetylase Select the correct option. (A) (B) (C) ( ... ) (iii) (ii) (iv) (c) (iii) (i) (ii) (iv) (d) (iii) (i) (iv) (ii)

Last Answer : (a) (iii) (iv) (i) (ii)

Match the following genes of the Lac operon with their respective products. (A) i gene (i) b-galactosidase (B) z gene (ii) Permease (C) a gene (iii)Repressor (D) y gene (iv) Transacetylase Select the correct option. (A) (B) (C) (D) (a) (iii) (iv) (i) (ii) (b) (i) (iii) (ii) (iv) (c) (iii) (i) (ii) (iv) (d) (iii) (i) (iv) (ii)

Description : Match the following genes of the Lac operon with their respective products. (A) i gene (i) b-galactosidase (B) z gene (ii) Permease (C) a gene (iii)Repressor (D) y gene (iv) Transacetylase Select the correct option. (A) (B) (C) ( ... ) (iii) (ii) (iv) (c) (iii) (i) (ii) (iv) (d) (iii) (i) (iv) (ii)

Last Answer : d) (iii) (i) (iv) (ii)

Which one of the following options gives the correct match of a disease with its causative organism and mode of infection? Disease Causative Mode of organism infection (a) Typhoid Salmonella With inspired typhi air (b) Pneumonia Streptococcus Droplet pneumoniae infection (c) Elephantiasis Wuchereria With infected bancrofti water and food (d) Malaria Plasmodium Bite of male vivax Anopheles mosquito

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Last Answer : (a) Typhoid Salmonella With inspired typhi air

Endospermic seeds are found in (a) Carica papaya (b) Dolichos lablab (c) Gourd (d) Pisum sativum

Description : Endospermic seeds are found in (a) Carica papaya (b) Dolichos lablab (c) Gourd (d) Pisum sativum

Last Answer : Ans:(a)

DNA test was developed by – (1) Dr. Alec Jeffreys (2) Dr. V.K. Kashyap (3) Watson and Crick (4) Gregor Mendel

Description : DNA test was developed by – (1) Dr. Alec Jeffreys (2) Dr. V.K. Kashyap (3) Watson and Crick (4) Gregor Mendel

Last Answer : (3) Watson and Crick Explanation: A genealogical. DNA test looks at a person's genetic code at specific locations. Results give information about genealogy or personal ancestry. James D. Watson and Francis Crick are the two scientists who discovered the structure of DNA in 1953.

DNA test was developed by (1) Dr. Alec Jeffreys (2) Dr. V.K. Kashyap (3) Watson and Crick (4) Gregor Mendel

Description : DNA test was developed by (1) Dr. Alec Jeffreys (2) Dr. V.K. Kashyap (3) Watson and Crick (4) Gregor Mendel

Last Answer : Watson and Crick

16.Transforming Principle experiment was conducted by (a) Oswald Avery (b) Frederick Griffith (c) Thomas Hunt Morgan (d) Francois Jacob

Description : 16.Transforming Principle experiment was conducted by (a) Oswald Avery (b) Frederick Griffith (c) Thomas Hunt Morgan (d) Francois Jacob

Last Answer : (b) Frederick Griffith

Which statement is true of rRNA? (a) Called soluble RNA (b) Named by Jacob and Monod (c) The smallest molecule of RNA (d) They form 80% of the total RNA

Description : Which statement is true of rRNA? (a) Called soluble RNA (b) Named by Jacob and Monod (c) The smallest molecule of RNA (d) They form 80% of the total RNA

Last Answer : Ans:(d)

Identify the correct pair representing the causative agent of typhoid fever and the confirmatory test for typhoid. (a) Salmonella typhi / Widal test (b) Plasmodium vivax / UTI test (c) Streptococcus pneumoniae / Widal test (d) Salmonella typhi / Anthrone test

Description : Identify the correct pair representing the causative agent of typhoid fever and the confirmatory test for typhoid. (a) Salmonella typhi / Widal test (b) Plasmodium vivax / UTI test (c) Streptococcus pneumoniae / Widal test (d) Salmonella typhi / Anthrone test

Last Answer : (a) Salmonella typhi / Widal test

acob and Monod studied lactose metabolism in E. coli and proposed operon concept. Operon concept is applicable for (a) all prokaryotes (b) all prokaryotes and some eukaryotes (c) all prokaryotes and all eukaryotes (d) all prokaryotes and some protozoans

Description : acob and Monod studied lactose metabolism in E. coli and proposed operon concept. Operon concept is applicable for (a) all prokaryotes (b) all prokaryotes and some eukaryotes (c) all prokaryotes and all eukaryotes (d) all prokaryotes and some protozoans

Last Answer : (c) all prokaryotes and all eukaryotes

Select the incorrect statement out of the five given below about lac operon when Lactose is present in the medium. a) Gene – A gets transcribed into mRNA which produces β-galactoside permease b) Inducer-Repressor complex is formed c) Lactose inactivates repressor protein d) RNA polymerase transcribe Z-gene, Y-gene and A-gene e) Allolactose is the inducer of lac operon

Description : Select the incorrect statement out of the five given below about lac operon when Lactose is present in the medium. a) Gene - A gets transcribed into mRNA which produces β-galactoside permease b) ... polymerase transcribe Z-gene, Y-gene and A-gene e) Allolactose is the inducer of lac operon

Last Answer : Gene – A gets transcribed into mRNA which produces β-galactoside permease b) Inducer-Repressor complex is formed

A woman has an upper respiratory infection. Six years ago, she experienced an episode of bronchospasm follwing penicillin V therapy. The cultures now reveal a strain of streptococcus pneumoniae that is sensitive to all of the following drugs. Which of these drugs would be the best choice for this patient? (a) Amoxicillin/clavulanate (b) Erythromycin (c) Ampicillin (d) cefaclor (e) Cyclacillin

Description : A woman has an upper respiratory infection. Six years ago, she experienced an episode of bronchospasm follwing penicillin V therapy. The cultures now reveal a strain of streptococcus pneumoniae that is ... ? (a) Amoxicillin/clavulanate (b) Erythromycin (c) Ampicillin (d) cefaclor (e) Cyclacillin

Last Answer : Ans: B

Semi-conservative replication of DNA was first demonstrated in (a) Escherichia coli (b) Streptococcus pneumoniae (c) Salmonella typhimurium (d) Drosophila melanogaster.

Description : Semi-conservative replication of DNA was first demonstrated in (a) Escherichia coli (b) Streptococcus pneumoniae (c) Salmonella typhimurium (d) Drosophila melanogaster.

Last Answer : (c) Salmonella typhimurium

Which of the following has drum stick appearance Options: 1) Clostridium tetani 2) Pneumococcus 3) Streptococcus pneumoniae 4) Staphylococcus epidermis

Description : Which of the following has drum stick appearance Options: 1) Clostridium tetani 2) Pneumococcus 3) Streptococcus pneumoniae 4) Staphylococcus epidermis

Last Answer : Correct Answer: 1) Clostridium tetani

The experimental material used by hershey and Chase for proving that DNA controls heredity was

Description : The experimental material used by hershey and Chase for proving that DNA controls heredity was

Last Answer : The experimental material used by hershey and Chase for proving that DNA controls heredity was A. Escherichia ... typhimurium C. T(2) phage D. TMV

Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a “triplet”? (a) Hershey and Chase (b) Morgan and Sturtevant (c) Beadle and Tatum (d) Nirenberg and Mathaei

Description : Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a “triplet”? (a) Hershey and Chase (b) Morgan and Sturtevant (c) Beadle and Tatum (d) Nirenberg and Mathaei

Last Answer : (b) Morgan and Sturtevant

One gene-one enzyme hypothesis was postulatedby (a) Beadle and Tatum (b) R. Franklin (c) Hershey and Chase (d) A. Garrod.

Description : One gene-one enzyme hypothesis was postulatedby (a) Beadle and Tatum (b) R. Franklin (c) Hershey and Chase (d) A. Garrod.

Last Answer : (c) Hershey and Chase

Who proved that DNA is basic genetic material? (a) Griffith (b) Watson (c) Boveri and Sutton (d) Hershey and Chase

Description : Who proved that DNA is basic genetic material? (a) Griffith (b) Watson (c) Boveri and Sutton (d) Hershey and Chase

Last Answer : d) Hershey and Chase

Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a “triplet”? (a) Hershey and Chase (b) Morgan and Sturtevant (c) Beadle and Tatum (d) Nirenberg and Mathaei

Description : Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a “triplet”? (a) Hershey and Chase (b) Morgan and Sturtevant (c) Beadle and Tatum (d) Nirenberg and Mathaei

Last Answer : (b) Morgan and Sturtevant

One gene-one enzyme hypothesis was postulatedby (a) Beadle and Tatum (b) R. Franklin (c) Hershey and Chase (d) A. Garrod

Description : One gene-one enzyme hypothesis was postulatedby (a) Beadle and Tatum (b) R. Franklin (c) Hershey and Chase (d) A. Garrod

Last Answer : (a) Beadle and Tatum

Who proved that DNA is basic genetic material? (a) Griffith (b) Watson (c) Boveri and Sutton (d) Hershey and Chase

Description : Who proved that DNA is basic genetic material? (a) Griffith (b) Watson (c) Boveri and Sutton (d) Hershey and Chase

Last Answer : (d) Hershey and Chase

Hershey and Chase experiment proving DNA as the genetic material was based on the principle a) Transduction b) transformation c) transcription d) translation

Description : Hershey and Chase experiment proving DNA as the genetic material was based on the principle a) Transduction b) transformation c) transcription d) translation

Last Answer : a) Transduction

The final proof for DNA as the genetic material came from the experiments of : (1) Hershey and Chase (2) Avery, Mcleod and McCarty (3) Hargobind Khorana (4) Griffith

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Last Answer : (1) Hershey and Chase

The Absorption Approach is developed by (a) Sidney Alexander (b) Alfred Marshall (c) A. Lerner (d) Jacob Viner

Description : The Absorption Approach is developed by (a) Sidney Alexander (b) Alfred Marshall (c) A. Lerner (d) Jacob Viner

Last Answer : Sidney Alexander

Select the correct statement. (a) Franklin Stahl coined the term ‘‘linkage’’. (b) Punnett square was developed by a British scientist. (c) Spliceosomes take part in translation. (d) Transduction was discovered by S. Altman

Description : Select the correct statement. (a) Franklin Stahl coined the term ‘‘linkage’’. (b) Punnett square was developed by a British scientist. (c) Spliceosomes take part in translation. (d) Transduction was discovered by S. Altman

Last Answer : (a) Franklin Stahl coined the term ‘‘linkage’’.

Select the correct statement : (1) Franklin Stahl coined the term "linkage". (2) Punnett square was developed by a British scientist. (3) Spliceosomes take part in translation. (4) Transduction was discovered by S. Altman.

Description : Select the correct statement : (1) Franklin Stahl coined the term "linkage". (2) Punnett square was developed by a British scientist. (3) Spliceosomes take part in translation. (4) Transduction was discovered by S. Altman.

Last Answer : (2) Punnett square was developed by a British scientist.

Why is the lac operon said to be an inducible operon? -Biology

Description : Why is the lac operon said to be an inducible operon? -Biology

Last Answer : answer:

What does the lac operon in bacteria code for? -Biology

Description : What does the lac operon in bacteria code for? -Biology

Last Answer : answer:

What genes are parts of the lac operon? -Biology

Description : What genes are parts of the lac operon? -Biology

Last Answer : answer:

In Lac-operon, repressor protein binds to

Description : In Lac-operon, repressor protein binds to

Last Answer : In Lac-operon, repressor protein binds to A. Regulator gene B. Operator gene C. Promoter gene D. Structural gene

In lac operon, lactose acts are

Description : In lac operon, lactose acts are

Last Answer : In lac operon, lactose acts are A. Inducer B. Co-inducer C. Repressor D. Co-repressor

In the ’lac operon’ concept, which of the following is a protein? (A) Operator (B) Repressor (C) Inducer (D) Vector

Description : In the ’lac operon’ concept, which of the following is a protein? (A) Operator (B) Repressor (C) Inducer (D) Vector

Last Answer : Answer : B

The region of the Lac operon which must be free from structural gene transcription to occur is (A) The operator locus (B) The promoter site (C) The ‘a’ gene (D) The ‘i’ gene

Description : The region of the Lac operon which must be free from structural gene transcription to occur is (A) The operator locus (B) The promoter site (C) The ‘a’ gene (D) The ‘i’ gene

Last Answer : Answer : A

Which of the following genes of the E.coli “Lac operon” codes for a constitutive protein? (A) The ‘a’ gene (B) The ‘i’ gene (C) The ‘c’ gene (D) The ‘z’ gene

Description : Which of the following genes of the E.coli “Lac operon” codes for a constitutive protein? (A) The ‘a’ gene (B) The ‘i’ gene (C) The ‘c’ gene (D) The ‘z’ gene

Last Answer : Answer : B

Lac operon of E. coli contains _______ is continuity. (A) Regulator and operator genes only (B) Operator and structural genes only (C) Regular and structural genes only (D) Regulator, operator and structural genes

Description : Lac operon of E. coli contains _______ is continuity. (A) Regulator and operator genes only (B) Operator and structural genes only (C) Regular and structural genes only (D) Regulator, operator and structural genes

Last Answer : Answer : D

The coding sequences in lac operon include (A) i gene (B) i gene, operator locus and promoter (C) z, y and a genes (D) i, z, y and a genes

Description : The coding sequences in lac operon include (A) i gene (B) i gene, operator locus and promoter (C) z, y and a genes (D) i, z, y and a genes

Last Answer : Answer : D

Expression of structural genes of lac operon is affected by all the following except (A) Lactose or its analogues (B) Repressor tetramer (C) cAMP (D) CAP-cAMP complex

Description : Expression of structural genes of lac operon is affected by all the following except (A) Lactose or its analogues (B) Repressor tetramer (C) cAMP (D) CAP-cAMP complex

Last Answer : Answer : C

Lactose or its analogues act as positive regulators of lac operon by (A) Attaching to i gene and preventing its expression (B) Increasing the synthesis of catabolite gene activator protein (C) Attaching to promoter region and facilitating the binding of RNA polymerase holoenzyme (D) Binding to repressor subunits so that the repressor cannot attach to the operator locus

Description : Lactose or its analogues act as positive regulators of lac operon by (A) Attaching to i gene and preventing its expression (B) Increasing the synthesis of catabolite gene activator protein (C) ... holoenzyme (D) Binding to repressor subunits so that the repressor cannot attach to the operator locus

Last Answer : Answer : D

Binding of RNA polymerase holoenzyme to the promoter region of lac operon is facilitated by (A) Catabolite gene activator protein (CAP) (B) cAMP (C) CAP-cAMP complex (D) None of these

Description : Binding of RNA polymerase holoenzyme to the promoter region of lac operon is facilitated by (A) Catabolite gene activator protein (CAP) (B) cAMP (C) CAP-cAMP complex (D) None of these

Last Answer : Answer : C

The enzymes encoded by z, y and a genes of lac operon are inducible, and their inducer is (A) Lactose (B) Allo-lactose (C) Catabolite gene activator protein (D) All of these

Description : The enzymes encoded by z, y and a genes of lac operon are inducible, and their inducer is (A) Lactose (B) Allo-lactose (C) Catabolite gene activator protein (D) All of these

Last Answer : Answer : B

Transcription of structural genes of lac operon is prevented by binding of the repressor tetramer to (A) i gene (B) Operator locus (C) Promoter (D) z gene

Description : Transcription of structural genes of lac operon is prevented by binding of the repressor tetramer to (A) i gene (B) Operator locus (C) Promoter (D) z gene

Last Answer : Answer : B

Trancription of z, y and a genes of lac operon is prevented by (A) Lactose (B) Allo-lactose (C) Repressor (D) cAMP

Description : Trancription of z, y and a genes of lac operon is prevented by (A) Lactose (B) Allo-lactose (C) Repressor (D) cAMP

Last Answer : Answer : C

RNA polymerase holoenzyme binds to lac operon at the following site: (A) i gene (B) z gene (C) Operator locus (D) Promoter region

Description : RNA polymerase holoenzyme binds to lac operon at the following site: (A) i gene (B) z gene (C) Operator locus (D) Promoter region

Last Answer : Answer : D

The regulatory i gene of lac operon (A) Is inhibited by lacotse (B) Is inhibited by its own product, the repressor protein (C) Forms a regulatory protein which increases the expression of downstream structural genes (D) Is constitutively expressed

Description : The regulatory i gene of lac operon (A) Is inhibited by lacotse (B) Is inhibited by its own product, the repressor protein (C) Forms a regulatory protein which increases the expression of downstream structural genes (D) Is constitutively expressed

Last Answer : Answer : D

Lac operon is a cluster of (A) Three structural genes (B) Three structural genes and their promoter (C) A regulatory gene, an operator and a promoter (D) A regulatory gene, an operator, a promoter and three structural genes

Description : Lac operon is a cluster of (A) Three structural genes (B) Three structural genes and their promoter (C) A regulatory gene, an operator and a promoter (D) A regulatory gene, an operator, a promoter and three structural genes

Last Answer : Answer : D