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What is the drawback of selecting recombinants based on the inactivation of antibiotic resistance genes?
The NCERT text notes: 'Selection of recombinants due to inactivation of antibiotics is a cumbersome procedure because it requires simultaneous plating on two plates having different antibiotics.'
Which of the following techniques is used to introduce recombinant DNA directly into the nucleus of an animal cell?
The NCERT text states: 'In a method known as micro-injection, recombinant DNA is directly injected into the nucleus of an animal cell.'
To transfer recombinant DNA into plant cells, which method involves bombarding cells with high velocity micro-particles of gold or tungsten coated with DNA?
The NCERT text describes this: 'In another method, suitable for plants, cells are bombarded with high velocity micro-particles of gold or tungsten coated with DNA in a method known as biolistics or gene gun.'
What characteristic of plasmids makes them suitable as cloning vectors?
The NCERT text states: 'You know that plasmids and bacteriophages have the ability to replicate within bacterial cells independent of the control of chromosomal DNA.'
The primary objective of creating a recombinant DNA molecule is to:
The NCERT text says: 'In almost all recombinant technologies, the ultimate aim is to produce a desirable protein. Hence, there is a need for the recombinant DNA to be expressed. The foreign gene gets expressed under appropriate conditions.'
Which of the following characteristics is NOT exhibited by Phylum Ctenophora?
According to the NCERT text, 'Ctenophores... are exclusively marine, radially symmetrical, diploblastic organisms with tissue level of organisation.' Therefore, bilateral symmetry is not a characteristic of Ctenophores.
The locomotion in Ctenophores is primarily facilitated by which of the following structures?
The NCERT states, 'The body bears eight external rows of ciliated comb plates, which help in locomotion.'
Bioluminescence, the property of a living organism to emit light, is well-marked in which of the following phyla?
The NCERT text explicitly mentions, 'Bioluminescence (the property of a living organism to emit light) is well-marked in ctenophores.'
In Ctenophores, the sexes are:
The NCERT states, 'Sexes are not separate.' This indicates that Ctenophores are typically monoecious or hermaphroditic.
Regarding digestion in Ctenophores, which of the following is true?
The NCERT text notes, 'Digestion is both extracellular and intracellular' in Ctenophores.
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.