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Q. No.Refer to the following statements for agarose-gel electrophoresis:
a.
Agarose is a natural polymer obtained from sea-weed.
b.
The separation of DNA molecules in agarose-gel electrophoresis depends on the size of DNA.
c.
The DNA migrates from negatively-charged electrode to the positively-charged electrode.
d.
The DNA migrates from positively-charged electrode to the negatively-charged electrode.
Choose the most appropriate answer from the options given below :
1. (a) and (b) only
2. (a), (b) and (c) only
3. (a), (b) and (d) only
4. (b), (c) and (d) only
Subtopic: Separation and Isolation of DNA fragments |
80%
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NEET - 2022
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Pathogenic bacteria gain resistance to antibiotics due to changes in their :
| 1. | Cosmids | 2. | Plasmids |
| 3. | Nucleus | 4. | Nucleoid |
Subtopic: Process of Biotech |
88%
From NCERT
NEET - 2022
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Complete the analogy with respect to the method of gene transfer and the most suitable host cell for it
Microinjection : Animal cell :: Biolistics:______
Select the correct option:
1. Bacteria
2. Plant cell
3. Bacteriophage
4. Fungal cell
Microinjection : Animal cell :: Biolistics:______
Select the correct option:
1. Bacteria
2. Plant cell
3. Bacteriophage
4. Fungal cell
Subtopic: Transforming Plant & Animal Cell |
93%
From NCERT
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Read the following statements and choose the correct option.
Statement (A): In gel electrophoresis, the most commonly used matrix is agar.
Statement (B): Agar is a natural polymer extracted from sea weeds.
1. Both statements (A) and (B) are correct
2. Both statements (A) and (B) are incorrect
3. Only statement (A) is correct
4. Only statement (B) is correct
Statement (A): In gel electrophoresis, the most commonly used matrix is agar.
Statement (B): Agar is a natural polymer extracted from sea weeds.
1. Both statements (A) and (B) are correct
2. Both statements (A) and (B) are incorrect
3. Only statement (A) is correct
4. Only statement (B) is correct
Subtopic: Separation and Isolation of DNA fragments |
From NCERT
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How many statements given below are correct with respect to plasmids?
a. They float freely in the cytoplasm of certain bacterial cells.
b. They have the ability to replicate, independent of the genomic DNA.
c. Herbert Boyer developed a method of removing and reinserting them in the cells.
d. They are circular ssDNA molecules.
Select the correct option.
1. Three
2. Four
3. Two
4. One
a. They float freely in the cytoplasm of certain bacterial cells.
b. They have the ability to replicate, independent of the genomic DNA.
c. Herbert Boyer developed a method of removing and reinserting them in the cells.
d. They are circular ssDNA molecules.
Select the correct option.
1. Three
2. Four
3. Two
4. One
Subtopic: Introduction & History |
From NCERT
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Which of the following can act as selectable markers in a cloning vector?
a. ampR
b. tetR
c. ori
d. rop
Select the correct option.
1. (a) and (b)
2. (c) and (d)
3. (a), (c) and (d)
4. (a), (b), (c) and (d)
a. ampR
b. tetR
c. ori
d. rop
Select the correct option.
1. (a) and (b)
2. (c) and (d)
3. (a), (c) and (d)
4. (a), (b), (c) and (d)
Subtopic: Cloning Vector |
86%
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A mixture containing DNA fragments, p, q, r and s with size of p + r = q, p > r and s > q, was subjected to agarose gel electrophoresis. The positions of these fragments from cathode to anode sides of the gel would be
1. q, s, p, r
2. s, q, p, r
3. r, p, q, s
4. p, r, s, q
1. q, s, p, r
2. s, q, p, r
3. r, p, q, s
4. p, r, s, q
Subtopic: Separation and Isolation of DNA fragments |
66%
From NCERT
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Match column-I with column-II and choose the correct option.
1. a(ii), b(iii), c(iv), d(i)
2. a(ii), b(i), c(iii), d(iv)
3. a(i), b(ii), c(iii), d(iv)
4. a(ii), b(i), c(iv), d(iii)
| Column-I | Column-II | ||
| 1. | Reverse transcriptase | (i) | Forms phosphodiester bonds |
| 2. | Taq polymerase | (ii) | cDNA library |
| 3. | Alkaline phosphatase | (iii) | Breaks phosphodiester bonds |
| 4. | Restriction endonuclease | (iv) | Used in ELISA |
1. a(ii), b(iii), c(iv), d(i)
2. a(ii), b(i), c(iii), d(iv)
3. a(i), b(ii), c(iii), d(iv)
4. a(ii), b(i), c(iv), d(iii)
Subtopic: Tools |
70%
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Complete the analogy and select the correct option.
BamHI : Sticky ends : : EcoRV : ______
1. Staggered ends
2. Cohesive ends
3. Blunt ends
4. Ends with overhanging stretches
BamHI : Sticky ends : : EcoRV : ______
1. Staggered ends
2. Cohesive ends
3. Blunt ends
4. Ends with overhanging stretches
Subtopic: Restriction Enzymes - Main Enzymes |
80%
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All of the given statements are true with respect to the separation of DNA fragments by gel electrophoresis except:
1. The cutting of DNA by restriction endonucleases results in fragments of DNA and these fragments can be separated by this technique.
2. The most commonly used matrix is agarose which is a natural polymer extracted from seaweeds.
3. The DNA fragments resolve according to their size. Hence, the larger the fragment size, the farther it moves.
4. The separated DNA fragments can be visualised only after staining the DNA with a compound known as ethidium bromide.
1. The cutting of DNA by restriction endonucleases results in fragments of DNA and these fragments can be separated by this technique.
2. The most commonly used matrix is agarose which is a natural polymer extracted from seaweeds.
3. The DNA fragments resolve according to their size. Hence, the larger the fragment size, the farther it moves.
4. The separated DNA fragments can be visualised only after staining the DNA with a compound known as ethidium bromide.
Subtopic: Separation and Isolation of DNA fragments |
90%
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