581. Carbohydrates which present in th cell membrane take part in

A Transport of substance
B Cell recognition
C Attachment to microfilament
D Attachment to microtubules
Answer :   Cell recognition
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582. An exception to cell theory is

A Erythrocytes
B Bacteria
C Fungi
D Virus
Answer :   Virus
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583. Double helix model on DNA which was proposed by Watson and crick was of

A C-DNA
B B-DNA
C D-DNA
D Z-DNA
Answer :   B-DNA
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584. Termination of chain growth in protein synthesis is brought about by

A UUG, UGC, UCA
B UCG, GCG, ACC
C UAA, UAG, UGA
D UUG, UAG, UCG
Answer :   UAA, UAG, UGA
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585. Chargaag's rule is given as

A Purines ≠ Pyrimidines
B A + G = T + C
C A + U = G + C
D A + T / G + C = Const
Answer :   A + G = T + C
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586. The process of m RNA synthesis on a DNA is known as

A Translation
B Transcription
C Transduction
D Transformation
Answer :   Transcription
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587. A fluorescent microscope is used

A For increasing revolving power
B for obtaining X-ray diffraction pattern of DNA
C To study cell and their components in a living state
D To localise cell structure stained with flurochrome dyes
Answer :   To localise cell structure stained with flurochrome dyes
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588. Golgibody is absent in

A Prokaryotes
B Mature mammalian R. B. C.
C Akaryotes
D All of the above
Answer :   All of the above
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589. Which chromosome remains condense furing interphase

A Sormal X-chromosome
B X-chromosome of Bar body
C Autosomes
D None of the above
Answer :   X-chromosome of Bar body
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590. Ripening fruits softene due to

A Conversion of starch into sugars
B Solubilistion of pectates in middle lamella
C Formation of organic acids
D Conversion of fats into carbohydrates
Answer :   Solubilistion of pectates in middle lamella
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