841. In sol type of colloidal solution, dispersion phase is

A Solid
B Liquid
C Gas
D None of the above
Answer :   Liquid
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842. Golgibody orginatates from

A E. R
B Mitochondria
C Nucleus
D Proplastid
Answer :   E. R
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843. Which microscope is used to study the dynamic aspects of a cell

A Electron microscope
B Scanning microscope
C Light compound microscope
D Phase contrast microscope
Answer :   Phase contrast microscope
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844. The genes are responsible for growth and differentiation in an organism through regulation of

A Translocation
B Transformation
C Transduction and translation
D Transduction and transcription
Answer :   Transduction and transcription
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845. The enzyme which can cut molecules of DNA in to segments is known as

A DNA Polymerase
B DNA Ligase
C Restriction enzyme
D DNA Gyrse
Answer :   Restriction enzyme
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846. The double helix model of Watson and Crick is known as

A B-DNA
B B-DNA
C Z-DNA
D D-DNA
Answer :   B-DNA
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847. What is function of trace elements which occur in protoplasm

A Formation of enzymes
B Formation of Hormones
C Formation of Haemoglobin
D Formation of Chlorophyll
Answer :   Formation of enzymes
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848. One of the characteristics of DNA is

A Uracil
B Deoxyribose sugar
C Single strandedness
D Ability of protein synthesis
Answer :   Deoxyribose sugar
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849. Role of nucleus in morphology of plant was first discovered in

A Acetabularia
B Maize
C Pea
D Neurospora
Answer :   Acetabularia
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850. DNA synthesis takes place by

A Replication
B Transcription
C Translation
D Transduction
Answer :   Replication
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