671. Semiautonomous cell organelle is

A Mitochondria
B Ribosome
C Plasma membrane
D Peroxysome
Answer :   Mitochondria
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672. Element necessary for middle lamella is

A $$Ca$$
B $$Zn$$
C $$K$$
D $$Cu$$
Answer :   $$Ca$$
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673. Which of the following enzyme is used in DNA multiplication

A RNA polymerase
B NA endonuclease
C Exonuclease
D DNA Polymerase
Answer :   DNA Polymerase
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674. Non pigmented part of chlorplast is called

A Thylakoids
B Grana
C Stroma
D Lamellae
Answer :   Stroma
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675. F1 - partuckes are composed of

A Pifment
B ATP
C ATPase
D FMN
Answer :   ATPase
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676. RNA synthesis is controlled by

A Rho - factor
B Sigma factor
C Endo nuclease
D RNA - polymerase
Answer :   RNA - polymerase
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677. The scientist who studied the cell of cork was

A Brown
B Hooke
C Leeuwnhoek
D Mulpighi
Answer :   Hooke
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678. Acomplete set of chromosomes inherited as an unit from one parent is knows as

A Karyotype
B Gene pool
C Genotype
D Genome
Answer :   Genome
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679. The contractile protein of skeletal muscle involving ATPase activity is

A -Actinin
B Troponin
C Tropomyosin
D Myosin
Answer :   Myosin
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680. Smooth E.R. of animal cell does not synthesize

A Cholesterol
B Phosphlipid
C Saturated fatty acid
D Unsaturated fatty acid
Answer :   Unsaturated fatty acid
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