he molecular scissors use3d to cut DNA into specific genes of interest are called (a) Exonucleases (b) Restriction endonucleases (c) Ligases (d) Polymerases

he molecular scissors use3d to cut DNA into specific genes of
interest are called
(a) Exonucleases
(b) Restriction endonucleases
(c) Ligases
(d) Polymerases
by

1 Answer

Answer :

(b) Restriction endonucleases
by

Related questions

Choose the correct pair from the following. (a) Ligases - Join the two DNA molecules (b) Polymerases - Break the DNA into fragments (c) Nucleases - Separate the two strands of DNA (d) Exonucleases - Make cuts at specific positions within DNA

Description : Choose the correct pair from the following. (a) Ligases - Join the two DNA molecules (b) Polymerases - Break the DNA into fragments (c) Nucleases - Separate the two strands of DNA (d) Exonucleases - Make cuts at specific positions within DNA

Last Answer : (a) Ligases - Join the two DNA molecules

Restriction endonucleases (A) Cut RNA chains at specific locations (B) Excise introns from hnRNA (C) Remove Okazaki fragments (D) Act as defensive enzymes to protect the host bacterial DNA from DNA of foreign organisms

Description : Restriction endonucleases (A) Cut RNA chains at specific locations (B) Excise introns from hnRNA (C) Remove Okazaki fragments (D) Act as defensive enzymes to protect the host bacterial DNA from DNA of foreign organisms

Last Answer : Answer : D

Genetic engineering is possible, because (a) we can cut DNA at specific sites by endonucleases like DNase I (b) restriction endonucleases purified from bacteria can be used in vitro (c) the phenomenon of transduction in bacteria is well understood (d) we can see DNA by electron microscope

Description : Genetic engineering is possible, because (a) we can cut DNA at specific sites by endonucleases like DNase I (b) restriction endonucleases purified from bacteria can be used in vitro (c) the phenomenon of transduction in bacteria is well understood (d) we can see DNA by electron microscope

Last Answer : (b) restriction endonucleases purified from bacteria can be used in vitro

The linking of antibiotic resistance gene with the plasmid vector became possible with (a) DNA polymerase (b) exonucleases (c) DNA ligase (d) endonucleases.

Description : The linking of antibiotic resistance gene with the plasmid vector became possible with (a) DNA polymerase (b) exonucleases (c) DNA ligase (d) endonucleases.

Last Answer : (c) DNA ligase

Identify the wrong statement with regard to restriction enzymes. (a) Each restriction enzyme functions by inspecting the length of a DNA sequence. (b) They cut the strand of DNA at palindromic sites. (c) They are useful in genetic engineering. (d) Sticky ends can be joined by using DNA ligases.

Description : Identify the wrong statement with regard to restriction enzymes. (a) Each restriction enzyme functions by inspecting the length of a DNA sequence. (b) They cut the strand of DNA at palindromic sites. (c) They are useful in genetic engineering. (d) Sticky ends can be joined by using DNA ligases.

Last Answer : d) Sticky ends can be joined by using DNA ligases.

The cutting of DNA at specific locations became possible with the discovery of (a) selectable markers (b) ligases (c) restriction enzymes (d) probes.

Description : The cutting of DNA at specific locations became possible with the discovery of (a) selectable markers (b) ligases (c) restriction enzymes (d) probes.

Last Answer : (c) restriction enzymes

Restriction endonucleases recognize and cut a certain sequence of (A) Single stranded DNA (B) Double stranded DNA (C) RNA (D) Protein

Description : Restriction endonucleases recognize and cut a certain sequence of (A) Single stranded DNA (B) Double stranded DNA (C) RNA (D) Protein

Last Answer : Answer : B

Highly specific molecular scissors that cut DNA are called -Biology

Description : Highly specific molecular scissors that cut DNA are called -Biology

Last Answer : answer:

Restriction endonucleases are enzymes which (a) make cuts at specific positions within the DNA molecule (b) recognize a specific nucleotide sequence for binding of DNA ligase (c) restrict the action of the enzyme DNA polymerase (d) remove nucleotides from the ends of the DNA molecule

Description : Restriction endonucleases are enzymes which (a) make cuts at specific positions within the DNA molecule (b) recognize a specific nucleotide sequence for binding of DNA ligase (c) restrict the action of the enzyme DNA polymerase (d) remove nucleotides from the ends of the DNA molecule

Last Answer : (a) make cuts at specific positions within the DNA molecule

Recombinant DNA is achieved by cleaving the pro-DNAs by (a) ligase (b) restriction endonuclease (c) primase (d) exonucleases.

Description : Recombinant DNA is achieved by cleaving the pro-DNAs by (a) ligase (b) restriction endonuclease (c) primase (d) exonucleases.

Last Answer : (b) restriction endonuclease

Without restriction endonucleases, it would be very difficult to a. Force Plasmids into Bacteria. b. Chemically Open Dna Molecules. c. Replicate Dna In A Recombinant Cell. d. Bring About Mutations In Bacteria.

Description : Without restriction endonucleases, it would be very difficult to a. Force Plasmids into Bacteria. b. Chemically Open Dna Molecules. c. Replicate Dna In A Recombinant Cell. d. Bring About Mutations In Bacteria.

Last Answer : b. Chemically Open Dna Molecules.

Why are restriction enzymes called molecular scissors? -Biology

Description : Why are restriction enzymes called molecular scissors? -Biology

Last Answer : answer:

The normal function of restriction endonucleases is to (A) Excise introns from hrRNA (B) Polymerize nucleotides to form RNA (C) Remove primer from okazaki fragments (D) Protect bacteria from foreign DNA

Description : The normal function of restriction endonucleases is to (A) Excise introns from hrRNA (B) Polymerize nucleotides to form RNA (C) Remove primer from okazaki fragments (D) Protect bacteria from foreign DNA

Last Answer : Answer : D

In sticky ends produced by restriction endonucleases (A) The 2 strands of DNA are joined to each other (B) The DNA strands stick to the restriction endonuclease (C) The ends of a double stranded fragment are overlapping (D) The ends of a double stranded fragment are non overlapping

Description : In sticky ends produced by restriction endonucleases (A) The 2 strands of DNA are joined to each other (B) The DNA strands stick to the restriction endonuclease (C) The ends of a double stranded fragment are overlapping (D) The ends of a double stranded fragment are non overlapping

Last Answer : Answer : C

All of the following statements about restriction endonucleases are true except: (A) They are present in bacteria (B) They act on double stranded DNA (C) They recognize palindromic sequences (D) They always produce sticky ends

Description : All of the following statements about restriction endonucleases are true except: (A) They are present in bacteria (B) They act on double stranded DNA (C) They recognize palindromic sequences (D) They always produce sticky ends

Last Answer : Answer : D

Restriction endonucleases can recognise (A) Palindromic sequences (B) Chimeric DNA (C) DNA-RNA hybrids (D) Homopolymer sequences

Description : Restriction endonucleases can recognise (A) Palindromic sequences (B) Chimeric DNA (C) DNA-RNA hybrids (D) Homopolymer sequences

Last Answer : Answer : A

Restriction endonucleases split (A) RNA (B) Single stranded DNA (C) Double stranded DNA (D) DNA-RNA hybrids

Description : Restriction endonucleases split (A) RNA (B) Single stranded DNA (C) Double stranded DNA (D) DNA-RNA hybrids

Last Answer : Answer : C

Restriction endonucleases are (a) used for in vitro DNA synthesis (b) used in genetic engineering (c) synthesized by bacteria (d) present in mammalian cells for degradation of DNA.

Description : Restriction endonucleases are (a) used for in vitro DNA synthesis (b) used in genetic engineering (c) synthesized by bacteria (d) present in mammalian cells for degradation of DNA.

Last Answer : (b) used in genetic engineering

Restriction endonucleases (a) are present in mammalian cells for degradation of DNA when the cell dies (b) are used in genetic engineering for ligating two DNA molecules (c) are used for in vitro DNA synthesis (d) are synthesized by bacteria as part of their defense mechanism.

Description : Restriction endonucleases (a) are present in mammalian cells for degradation of DNA when the cell dies (b) are used in genetic engineering for ligating two DNA molecules (c) are used for in vitro DNA synthesis (d) are synthesized by bacteria as part of their defense mechanism.

Last Answer : (d) are synthesized by bacteria as part of their defense mechanism.

The DNA fragments produced by the use of restriction endonucleases can be separated by

Description : 4. The DNA fragments produced by the use of restriction endonucleases can be separated by (a) polymerase chain reaction (b) gel electrophoresis (c) density gradient centrifugation (d) any of the above.

Last Answer : gel electrophoresis

Molecular scissors that cut DNA -Biology

Description : Molecular scissors that cut DNA -Biology

Last Answer : answer:

Do eukaryotic cells have restriction endonucleases? -Biology

Description : Do eukaryotic cells have restriction endonucleases? -Biology

Last Answer : answer:

Restriction endonucleases are present in (A) Viruses (B) Bacteria (C) Eukaryotes (D) All of these

Description : Restriction endonucleases are present in (A) Viruses (B) Bacteria (C) Eukaryotes (D) All of these

Last Answer : Answer : B

The restriction enzymes are used in genetic engineering, because (a) they can cut DNA at specific base sequence (b) they are nucleases that cut DNA at variable sites (c) they can degrade harmful proteins (d) they can join different DNA fragments.

Description : The restriction enzymes are used in genetic engineering, because (a) they can cut DNA at specific base sequence (b) they are nucleases that cut DNA at variable sites (c) they can degrade harmful proteins (d) they can join different DNA fragments.

Last Answer : (a) they can cut DNA at specific base sequence

Which of the following cut the DNA from specific places? (a) E.coli restriction endonuclease I (b) Ligase (c) Exonuclease (d) Alkaline phosphate

Description : Which of the following cut the DNA from specific places? (a) E.coli restriction endonuclease I (b) Ligase (c) Exonuclease (d) Alkaline phosphate

Last Answer : (a) E.coli restriction endonuclease I

Chimeric DNA (A) Is found in bacteriophages (B) Contains unrelated genes (C) Has no restriction sites (D) Is palindromic

Description : Chimeric DNA (A) Is found in bacteriophages (B) Contains unrelated genes (C) Has no restriction sites (D) Is palindromic

Last Answer : Answer : B

The correct statement concerning RNA and DNA polymerases is (A) RNA polymerase use nucleoside diphosphates (B) RNA polymerase require primers and add bases at 5’ end of the growing polynucleotide chain (C) DNA polymerases can add nucleotides at both ends of the chain (D) All RNA and DNA polymerases can add nucleotides only at the 3’ end of the growing polynucleotide chain

Description : The correct statement concerning RNA and DNA polymerases is (A) RNA polymerase use nucleoside diphosphates (B) RNA polymerase require primers and add bases at 5' end of the growing polynucleotide ... and DNA polymerases can add nucleotides only at the 3' end of the growing polynucleotide chain

Last Answer : Answer : D

Consider the following statements: (1) Copper is present in cytochrome oxidane (2) Pantothenic acid is precursor of co-enzyme-A (3) Thiamine prohosphate is the prosthetic group in decarboxylases (4) Zinc is present in RNA and DNA polymerases

Description : Consider the following statements: (1) Copper is present in cytochrome oxidane (2) Pantothenic acid is precursor of co-enzyme-A (3) Thiamine prohosphate is the prosthetic group in decarboxylases (4) Zinc is present in RNA and DNA polymerases

Last Answer : Ans. ((b))

What are DNA ligases? -Biology

Description : What are DNA ligases? -Biology

Last Answer : answer:

What are the functions of DNA ligases? -Biology

Description : What are the functions of DNA ligases? -Biology

Last Answer : answer:

What are DNA ligases? -Biology

Description : What are DNA ligases? -Biology

Last Answer : answer:

What are the functions of DNA ligases? -Biology

Description : What are the functions of DNA ligases? -Biology

Last Answer : answer:

Which enzyme is known as 'molecular scissors'? -Biology

Description : Which enzyme is known as 'molecular scissors'? -Biology

Last Answer : answer:

Molecular scissors used in genetic engineering

Description : Molecular scissors used in genetic engineering

Last Answer : Ans. Restriction endonuclease

Assetion: Restriction enzymes cut the strand 27 of DNA to produce sticky ends Reason : Stickiness of the ends faciliates the action of the enzyme DNA

Description : Assetion: Restriction enzymes cut the strand 27 of DNA to produce sticky ends Reason : Stickiness of the ends faciliates the action of the enzyme DNA

Last Answer : Assetion: Restriction enzymes cut the strand 27 of DNA to produce sticky ends Reason : Stickiness of ... D. If both assertion and reason are false

A foreign DNA and plasmid cut by the same restriction endonculease can be joined to form a recombinant plasmid using

Description : A foreign DNA and plasmid cut by the same restriction endonculease can be joined to form a recombinant plasmid using

Last Answer : A foreign DNA and plasmid cut by the same restriction endonculease can be joined to form a recombinant ... B. Ligase C. Eco RI D. Taq polymerase

Which one of the following palindromic base sequences in DNA can be easily cut at about the middle by some particular restriction enzyme? (a) (b) (c) (d)

Description : Which one of the following palindromic base sequences in DNA can be easily cut at about the middle by some particular restriction enzyme? (a) (b) (c) (d)

Last Answer : (c)

A foreign DNA and plasmid cut by the same restriction endonuclease can be joined to form a recombinant plasmid using (a) EcoRI (b) Taq polymerase (c) polymerase III (d) ligase.

Description : A foreign DNA and plasmid cut by the same restriction endonuclease can be joined to form a recombinant plasmid using (a) EcoRI (b) Taq polymerase (c) polymerase III (d) ligase.

Last Answer : (d) ligase.

6. Which of the following DNA sequences would a Restriction enzyme recognize and cut? a. ATGCAC TACGTG b. GATATC CTATAG c. TAGATA ATCTAT d. AATATA TTATAT

Description : 6. Which of the following DNA sequences would a Restriction enzyme recognize and cut? a. ATGCAC TACGTG b. GATATC CTATAG c. TAGATA ATCTAT d. AATATA TTATAT

Last Answer : b. GATATC CTATAG

Restriction endonuclease (a) synthesizes DNA (b) cuts the DNA molecule randomly (c) cuts the DNA molecule at specific sites (d) restricts the synthesis of DNA inside the nucleus.

Description : Restriction endonuclease (a) synthesizes DNA (b) cuts the DNA molecule randomly (c) cuts the DNA molecule at specific sites (d) restricts the synthesis of DNA inside the nucleus.

Last Answer : (c) cuts the DNA molecule at specific sites

Following statements describe the characteristics of the enzyme restriction endonuclease. Identify the incorrect statement. (a) The enzyme recognises a specific palindromic nucleotide sequence in the DNA. (b) The enzyme cuts DNA molecule at identified position within the DNA. (c) The enzyme binds DNA at specific sites and cuts only one of the two strands. (d) The enzyme cuts the sugar-phosphate backbone at specific sites on each strand.

Description : Following statements describe the characteristics of the enzyme restriction endonuclease. Identify the incorrect statement. (a) The enzyme recognises a specific palindromic nucleotide sequence in the DNA. (b) ... (d) The enzyme cuts the sugar-phosphate backbone at specific sites on each strand.

Last Answer : (c) The enzyme binds DNA at specific sites and cuts only one of the two strands.

The given figure is the diagrammatic representation of the E. coli vector pBR322. Which one of the given options correctly identifies its certain component(s)? Bam H1 Sal 1 Pvu II rop ori Pst I Pvu I Eco R I Cla Hin d III tet ampR R (a) ori-original restriction enzyme (b) rop-reduced osmotic pressure (c) HindIII, EcoRI - selectable markers (d) ampR, tetR–antibiotic resistance genes

Description : The given figure is the diagrammatic representation of the E. coli vector pBR322. Which one of the given options correctly identifies its certain component(s)? Bam H1 Sal 1 Pvu II rop ... reduced osmotic pressure (c) HindIII, EcoRI - selectable markers (d) ampR, tetR-antibiotic resistance genes

Last Answer : (d) ampR, tetR–antibiotic resistance genes

Are scissors which can't cut a sign of the failure of capitalism?

Description : Are scissors which can't cut a sign of the failure of capitalism?

Last Answer : As long as people are willing to buy crap that doesn't work it's a failure of both capitalism and the consumer not demanding or being willing to pay for things that actually do what they are ... write companies to praise them when I buy a product that is well make and actually works as advertised.

Will harm come if you cut hair with scissors?

Description : Will harm come if you cut hair with scissors?

Last Answer : harm? I think you mean itchiness….

can you use kitchen scissors to cut zucchini

Description : can you use kitchen scissors to cut zucchini

Last Answer : Need Answer

When you cut the tip off a square pyramid. if you keep your scissors level to the base of the pyramid what will be the shape of the new base of the tip?

Description : When you cut the tip off a square pyramid. if you keep your scissors level to the base of the pyramid what will be the shape of the new base of the tip?

Last Answer : It will be a square shape if it is a squared based pyramid

Transfer of genes (gene flow) in between different species is known as (a) Vertical gene flow (b) Horizontal gene flow (c) Lateral gene flow (d) Side gene flow

Description : Transfer of genes (gene flow) in between different species is known as (a) Vertical gene flow (b) Horizontal gene flow (c) Lateral gene flow (d) Side gene flow

Last Answer : (b) Horizontal gene flow

Bacterial genes lack (a) Exons (b) Introns (c) Prometers (d) Operator

Description : Bacterial genes lack (a) Exons (b) Introns (c) Prometers (d) Operator

Last Answer : (b) Introns

Multiple ribosomes working together on one mRNA are called a. polysomes b. multisomes c. polymerases d. A-C are correct

Description : Multiple ribosomes working together on one mRNA are called a. polysomes b. multisomes c. polymerases d. A-C are correct

Last Answer : a. polysomes