451. Cellular furnaces of cells are

A Chloroplast
B Mitochondia
C Ribosome
D Nucleus
Answer :   Mitochondia
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452. Nucleotide is

A N2 - base, pentose sugar and phosphoric acid
B Nitrogen, Hexose sugar and phospohoric acid
C Nitrogen base, pentose sugar
D Nitrogen base, trioses and phosphoric acid
Answer :   N2 - base, pentose sugar and phosphoric acid
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453. In which stage of cell cycle, DNA replication occurs

A G1-phase
B S - phase
C G2- phase
D M - phase
Answer :   S - phase
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454. Grana and stroma lamellae are the parts of

A Mitochondria
B Chloroplast
C Endoplasmic reticulum
D Vacuoles
Answer :   Chloroplast
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455. The chromatin material which takes darker stain in intephase is called

A Euchromatin
B Hetero chromatin
C Primary constriction
D Satellite body
Answer :   Hetero chromatin
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456. The base sequence of nucleic acid is AGG, GGA, CGA, CCA from this it can be inferred that it is a segment of

A DNA
B M - RNA
C T - RNA
D Data insufficient
Answer :   Data insufficient
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457. The main organelle involved in modification and routing of newly synthesized proteins to their destinations is

A chloroplast
B mitochondria
C lysosome
D endoplasmic Reticulum
Answer :   endoplasmic Reticulum
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458. Flagella of prokaryotic and eukaryotic cells differ in

A type of movement and placement in cell
B location in cell and mode of functioning
C microtubular organization and type of movement
D microtubular organization and function
Answer :   microtubular organization and type of movement
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459. Arm ratio in metacentrin codition is

A 1 : 1
B 1 : 2
C 1 : 3
D 2 : 3
Answer :   1 : 1
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460. Smallest cell organelle which called cell engine is

A Ribosome
B Lysosome
C Vacuoles
D Endoplasmic reticulum
Answer :   Ribosome
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