What is the origin of replication in a plasmid? -Biology

What is the origin of replication in a plasmid? -Biology
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Last Answer : A plasmid is a piece of circular DNA that extends beyond the chromosomes of a bacterial cell. The plasmid is the original instrument of genetic engineering by which new genetic ... bacterial chromosomes. Replicated plasmids are easily transmitted to other bacteria upon contact with other bacteria.

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Last Answer : What is true of plasmid A. Found in viruses B. Constains genes for vital activities C. Part of nuclear chromosome D. Widely used in gene transfer

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A plasmid is a (A) Single stranded linear DNA (B) Single stranded circular DNA (C) Double stranded linear DNA (D) Double stranded circular DNA

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All of the following may be used as expression vectors except (A) Plasmid (B) Bacteriophage (C) Baculovirus (D) E. coli

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Multiple antibiotic resistance is mediated by a. Episome b. Plasmid c. Colplasmid d. Both b and c

Description : Multiple antibiotic resistance is mediated by a. Episome b. Plasmid c. Colplasmid d. Both b and c

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The most important mechanism of bacterial resistance to an aminoglycoside antibiotic is (a) Plasmid mediated acquisition of aminoglycoside conjugating enzyme (b) Mutational acquisition of aminoglycoside hydrolyzing enzyme (c) Mutation reducing affinity of ribosomal protein for the antibiotic (d) Mutational loss of porin channels

Description : The most important mechanism of bacterial resistance to an aminoglycoside antibiotic is (a) Plasmid mediated acquisition of aminoglycoside conjugating enzyme (b) Mutational acquisition of aminoglycoside ... affinity of ribosomal protein for the antibiotic (d) Mutational loss of porin channels

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The most important mechanism by which gram negative bacilli acquire chloramphenicol resistance is (a) Decreased permeability into the bacterial cell (b) Acquisition of a plasmid encoded for chloramphenicol acetyl transferase (c) Lowered affinity of the bacterial ribosome for chloramphenicol (d) Switching over from ribosomal to mitochondrial protein synthesis

Description : The most important mechanism by which gram negative bacilli acquire chloramphenicol resistance is (a) Decreased permeability into the bacterial cell (b) Acquisition of a plasmid encoded ... bacterial ribosome for chloramphenicol (d) Switching over from ribosomal to mitochondrial protein synthesis

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Which one of the following vectors is used to replace the defective gene in gene therapy? (a) Adenovirus (b) Cosmid (c) Ri plasmid (d) Ti plasmid

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The Ti plasmid, is often used for making transgenic plants. The plasmid is found in (a) Azotobacter (b) Rhizobium of the roots of leguminous plants (c) Agrobacterium (d) Yeast as a 2 mm plasmid.

Description : The Ti plasmid, is often used for making transgenic plants. The plasmid is found in (a) Azotobacter (b) Rhizobium of the roots of leguminous plants (c) Agrobacterium (d) Yeast as a 2 mm plasmid.

Last Answer : (c) Agrobacterium

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

In genetic engineering, a DNA segment (gene) of interest, is transferred to the host cell through a vector. Consider the following four agents (i-iv) in this regard and select the correct option about which one or more of these can be used as a vector/vectors. (i) Bacterium (ii) Plasmid (iii)Plasmodium (iv) Bacteriophage (a) (i), (ii) and (iv) (b) (i) only (c) (i) and (iii) (d) (ii) and (iv)

Description : In genetic engineering, a DNA segment (gene) of interest, is transferred to the host cell through a vector. Consider the following four agents (i-iv) in this regard and select the correct option about which one or more of these ... ii) and (iv) (b) (i) only (c) (i) and (iii) (d) (ii) and (iv)

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

DNA or RNA segment tagged with a radioactive molecule is called (a) vector (b) probe (c) clone (d) plasmid.

Description : DNA or RNA segment tagged with a radioactive molecule is called (a) vector (b) probe (c) clone (d) plasmid.

Last Answer : (b) probe

A single strand of nucleic acid tagged with a radioactive molecule is called (a) vector (b) selectable marker (c) plasmid (d) probe

Description : A single strand of nucleic acid tagged with a radioactive molecule is called (a) vector (b) selectable marker (c) plasmid (d) probe

Last Answer : d) probe.

Which vector can clone only a small fragment of DNA? (a) Bacterial artificial chromosome (b) Yeast artificial chromosome (c) Plasmid (d) Cosmid

Description : Which vector can clone only a small fragment of DNA? (a) Bacterial artificial chromosome (b) Yeast artificial chromosome (c) Plasmid (d) Cosmid

Last Answer : (c) Plasmid