347382
Which of these is NOT a method to make host cells ‘competent’ to take up DNA?
1 Elution
2 Biolistics
3 Use of disarmed pathogen vectors
4 Micro-injection
Explanation:
Except Elution, remaining three methods to make host cells competent to take up DNA
KCET - 2023
BIOXII11:BIOTECHNOLOGY PRINCIPLES AND PROCESSES
347383
Match the columns I and II regarding competent host and the technique used Column I Column II A Biolistics P Animal host B Micro-injection Q Bacterial host C Heat shock R Plant host
1 A – R , B – P , C – Q
2 A – Q , B – R , C – P
3 A – P , B – R , C – Q,
4 A – Q , B – P , C – R
Explanation:
\({\rm{A - R, B - P, C - Q}}\)
BIOXII11:BIOTECHNOLOGY PRINCIPLES AND PROCESSES
347384
In gene gun method used to introduce alien DNA into host cells, microparticles of ________ metal are used
1 Copper
2 Zinc
3 Tungsten or gold
4 Silver
Explanation:
In gene gun method, microparticles of tungsten or gold are used. Gold or tungsten are inert in nature so they do not alter the chemical composition of cells.
NEET - 2023
BIOXII11:BIOTECHNOLOGY PRINCIPLES AND PROCESSES
347385
Why foreign DNA cannot pass through cell membrane?
1 DNA is hydrophobic
2 DNA is hydrophilic
3 DNA is made of nucleotides
4 DNA is negatively charged
Explanation:
DNA is a hydrophilic molecule, which is negatively charged. Cell membrane or plasma membrane is hydrophobic. It mainly comprises lipids which do not allow hydrophilic molecules such as DNA to cross the cell membrane.
347382
Which of these is NOT a method to make host cells ‘competent’ to take up DNA?
1 Elution
2 Biolistics
3 Use of disarmed pathogen vectors
4 Micro-injection
Explanation:
Except Elution, remaining three methods to make host cells competent to take up DNA
KCET - 2023
BIOXII11:BIOTECHNOLOGY PRINCIPLES AND PROCESSES
347383
Match the columns I and II regarding competent host and the technique used Column I Column II A Biolistics P Animal host B Micro-injection Q Bacterial host C Heat shock R Plant host
1 A – R , B – P , C – Q
2 A – Q , B – R , C – P
3 A – P , B – R , C – Q,
4 A – Q , B – P , C – R
Explanation:
\({\rm{A - R, B - P, C - Q}}\)
BIOXII11:BIOTECHNOLOGY PRINCIPLES AND PROCESSES
347384
In gene gun method used to introduce alien DNA into host cells, microparticles of ________ metal are used
1 Copper
2 Zinc
3 Tungsten or gold
4 Silver
Explanation:
In gene gun method, microparticles of tungsten or gold are used. Gold or tungsten are inert in nature so they do not alter the chemical composition of cells.
NEET - 2023
BIOXII11:BIOTECHNOLOGY PRINCIPLES AND PROCESSES
347385
Why foreign DNA cannot pass through cell membrane?
1 DNA is hydrophobic
2 DNA is hydrophilic
3 DNA is made of nucleotides
4 DNA is negatively charged
Explanation:
DNA is a hydrophilic molecule, which is negatively charged. Cell membrane or plasma membrane is hydrophobic. It mainly comprises lipids which do not allow hydrophilic molecules such as DNA to cross the cell membrane.
347382
Which of these is NOT a method to make host cells ‘competent’ to take up DNA?
1 Elution
2 Biolistics
3 Use of disarmed pathogen vectors
4 Micro-injection
Explanation:
Except Elution, remaining three methods to make host cells competent to take up DNA
KCET - 2023
BIOXII11:BIOTECHNOLOGY PRINCIPLES AND PROCESSES
347383
Match the columns I and II regarding competent host and the technique used Column I Column II A Biolistics P Animal host B Micro-injection Q Bacterial host C Heat shock R Plant host
1 A – R , B – P , C – Q
2 A – Q , B – R , C – P
3 A – P , B – R , C – Q,
4 A – Q , B – P , C – R
Explanation:
\({\rm{A - R, B - P, C - Q}}\)
BIOXII11:BIOTECHNOLOGY PRINCIPLES AND PROCESSES
347384
In gene gun method used to introduce alien DNA into host cells, microparticles of ________ metal are used
1 Copper
2 Zinc
3 Tungsten or gold
4 Silver
Explanation:
In gene gun method, microparticles of tungsten or gold are used. Gold or tungsten are inert in nature so they do not alter the chemical composition of cells.
NEET - 2023
BIOXII11:BIOTECHNOLOGY PRINCIPLES AND PROCESSES
347385
Why foreign DNA cannot pass through cell membrane?
1 DNA is hydrophobic
2 DNA is hydrophilic
3 DNA is made of nucleotides
4 DNA is negatively charged
Explanation:
DNA is a hydrophilic molecule, which is negatively charged. Cell membrane or plasma membrane is hydrophobic. It mainly comprises lipids which do not allow hydrophilic molecules such as DNA to cross the cell membrane.
347382
Which of these is NOT a method to make host cells ‘competent’ to take up DNA?
1 Elution
2 Biolistics
3 Use of disarmed pathogen vectors
4 Micro-injection
Explanation:
Except Elution, remaining three methods to make host cells competent to take up DNA
KCET - 2023
BIOXII11:BIOTECHNOLOGY PRINCIPLES AND PROCESSES
347383
Match the columns I and II regarding competent host and the technique used Column I Column II A Biolistics P Animal host B Micro-injection Q Bacterial host C Heat shock R Plant host
1 A – R , B – P , C – Q
2 A – Q , B – R , C – P
3 A – P , B – R , C – Q,
4 A – Q , B – P , C – R
Explanation:
\({\rm{A - R, B - P, C - Q}}\)
BIOXII11:BIOTECHNOLOGY PRINCIPLES AND PROCESSES
347384
In gene gun method used to introduce alien DNA into host cells, microparticles of ________ metal are used
1 Copper
2 Zinc
3 Tungsten or gold
4 Silver
Explanation:
In gene gun method, microparticles of tungsten or gold are used. Gold or tungsten are inert in nature so they do not alter the chemical composition of cells.
NEET - 2023
BIOXII11:BIOTECHNOLOGY PRINCIPLES AND PROCESSES
347385
Why foreign DNA cannot pass through cell membrane?
1 DNA is hydrophobic
2 DNA is hydrophilic
3 DNA is made of nucleotides
4 DNA is negatively charged
Explanation:
DNA is a hydrophilic molecule, which is negatively charged. Cell membrane or plasma membrane is hydrophobic. It mainly comprises lipids which do not allow hydrophilic molecules such as DNA to cross the cell membrane.
