-
Pomato is somatic
(a) Poppy and Potato
(b) Potato and tomato
© Poppy and tamarind
(d) Poppy and Tomato Answer: (b) -
Preserving germplasm in frozen state is
(a) Cryopreservation
(b) Cold storage
© In situ preservation
(d) Vernalisation Answer: (a) -
Protein helping in opening of DNA double helix in front of replication fork is
(a) DNA gyrase
(b) DNA Polymerase I
© DNA ligase
(d) DNA topoisomerase Answer: (a) -
Pyrimidine base present in RNA in place of thymine of DNA is
(a) Uracil
(b) Adenine
© Cytosine
(d) Guanine Answer: (a) -
Restriction endonuclease is employed for cutting
(a) A single stranded DNA
(b) Double stranded DNA
© RNA fragment
(d) mRNA Answer: (b) -
Restriction endonucleases are
(a) Used in genetic engineering for uniting two DNA molecules
(b) Used for in vitro DNA synthesis
© Present in mammalian cells for degeneration of DNA of dead cells
(d) Synthesised by bacteria for their defence Answer: (d) -
Restriction enzymes are used in genetic engineering because they
(a) Can join DNA fragment
(b) Cut DNA at specific base sequence
© Cut DNA at variable sites
(d) Are proteolytic enzymes which degrade harmful proteins Answer: (b) -
Reverse transcriptase is
(a) RNA dependent RNA polymerase
(b) DNA dependent RNA polymerase
© DNA dependent DNA polymerase
(d) RNA dependent DNA polymerase Answer: (d) -
RNA contains
(a) Hexose
(b) Ribose
© Fructose
(d) Glucose Answer: (b) -
RNA does not possess
(a) Uracil
(b) Thymine
© Adenine
(d) Cytosine Answer: (b) -
RNA that picks up specific amino acid from amino acid pool of cytoplasm to carry it to ribosome during protein synthesis is
(a) tRNA
(b) mRNA
© rRNA
(d) gRNA Answer: (a) -
Semiconservative DNA / Chromosome replication using 14N was demonstrated by
(a) Messelson
(b) Tylor
© Messelson and stahl
(d) Hershey and Chase Answer: © -
Similarity between DNA and RNA is that both have
(a) Similar sugars
(b) Similar mode of replication
© Similar pyrimidines
(d) Polymers of nucleotides Answer: (d) -
Structure of DNA was given by
(a) Kornberg
(b) Nirenberg
© Watson and Crick
(d) Holley and Nirenberg Answer: © -
Successive nucleotides are covalently linked through
(a) Glycosidic bonds
(b) Phosphodiester bonds
© Hydrogen bonds
(d) Nitrogen bonds Answer: (b) -
Termination of polypeptide chain is brought about by
(a) UUG, UAG and UCG
(b) UAA, UAG and UGA
© UUG, UGC and UCA
(d) UCG, GCG and ACC Answer: (b) -
The basic uniot of a nucleic acid is
(a) Pentose sugar
(b) Nucleoid
© Nucleoside
(d) Nucleotide Answer: (d) -
The codon for anticodon 3’ UUUA – 5’ is
(a) 5’ AAAU- 3’
(b) 5’ UUUA- 3’
© 3’ UAAD- 5’
(d) 3’ AUUU- 5’ Answer: (a) -
The common feature amongst nucleus, chloroplast and mitochondria is
(a) Lamellae
(b) DNA
© Cristae
(d) All the above Answer: (b) -
The enzyme taking part in joining two ends of DNA is
(a) Ligase
(b) Polymerase
© Gyrase
(d) Helicase Answer: (a)