231.
Centromereisalso called
A
Chromomere
B
Secondary constriction
C
Primary constriction
D
Chromonema
Answer :
Primary constriction
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232.
In which stage the DNA is doubled
A
Metaphase
B
Anaphase
C
Interphase
D
Prophase
Answer :
Interphase
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233.
Association of a m-RNA with several ribosomes is called
A
Polysome
B
Informosome
C
A and B both
D
None of the above
Answer :
Polysome
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234.
The membrane surrounding cell vacuole is called
A
Tonoplast
B
Cell wall
C
Plasma membrane
D
Cell membrane
Answer :
Tonoplast
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235.
Site of protein synthesis is
A
Ribosome
B
SER
C
Golgi bodies
D
Lysosome
Answer :
Ribosome
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236.
"Bouquet - stage" occur in which aub stages of prophase - I
A
Leptotene
B
Zygotene
C
Pavhytene
D
Diplotene
Answer :
Leptotene
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237.
Flyid mosaic model was given gy
A
Knoll and Ruska
B
Singer nd Ruska
C
Singer and Nicolson
D
Bateson and Punnet
Answer :
Singer and Nicolson
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238.
Identify the correct statement with regard to $${{G_1}}$$ phase (Gap 1) of interphase.
A
Reorganisation of all cell components takes place
B
Cell is metabolically active, grows but does not replicate its DNA
C
Nuclear Division takes place
D
DNA synthesis or replication takes place
Answer :
Cell is metabolically active, grows but does not replicate its DNA
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239.
Each chromosome composed of one chromatid in
A
Anaphase - I
B
Anaphase - II
C
Metaphase - I
D
Metaphase - II
Answer :
Anaphase - II
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240.
Synthesis of cycline protein occur in
A
Permanent tissue
B
Meristem
C
Lingified cells
D
All the types of cells
Answer :
Meristem
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