D:-Symbiosis
Correct Answer:- Option-D
Question29:-Replication in DNA moves from
A:-3' to 5' direction
to 5' direction
C:-3' to 3' direction
D:-5' to 3' direction
Correct Answer:- Option-D
Question30:-Cot ¥% of DNA is defined as
A:-The time taken to reanneal
B:-Concentration of DNA in a cell at any time
C:-Amount of cytosine bases in a single strand by DNA
D:-The initial concentration multiplied by time for half of DNA to reanneal
Correct Answer:- Option-D
Question31:-Chaperon protein help in
A:-Protein folding and assembly
B:-Protein folding only
C:-Protein stability
D:-Both 1) and 2)
Correct Answer:-Question Cancelled
Question32:-An enzyme responsible for the synthesis of tRNA
A:-tRNA replicase
B:-tRNA synthetase
:-Ribosomal enzymes
D:-RNA Polymerase
Correct Answer:- Option-D
Question33:-Polytene chromosome is generated by
A:-DNA replication failure
B:-Homologus chromosome pairing
:-Transcription process
D:-DNA replication without segregation
Correct Answer:- Option-D
Question34:-Which of the following correctly matches a phase of the cell cycle ?
A:-S1 immediately precedes cell division
-G2, cell division
C:-M, duplication of DNA
D:-G1 immediately follows cell division
Correct Answer:-Question Cancelled
Question35:-The 'RNA world hypothesis' proposes that
A:-RNA formed from DNA
-RNA is a catalyst
C:-RNA formed from protein
D:-RNA is both catalyst and genetic material
Correct Answer:- Option-D
Question36:-Which of the following structure is not surrounded by one or more membrane ?
A:-Chloroplast
B:-Mitochondria
C:-Proxisome
D:-Ribosome
Correct Answer:- Option-D
Question37:-Choose the more appropriate term for 'Connexin' protein
A:-Desmosomes
-Intercellular spaces
-Tight junctions
D:-Gap junctions
Correct Answer:- Option-D
Question38:-Water in non-cyclic photophosphorylation is used for
A:-Excitation of chlorophyll
B:-Hydrolysis of ATP