What is common between chloroplasts, chromoplasts and leucoplasts ?
(1) Presence of pigments
(2) Possession of thylakoids and grana
(3) Storage of starch, proteins and lipids
(4) Ability to multiply by a fission-like process
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology"Omnis-cellula-e-cellula" was given:
(1) Virchow
(2) Hooke
(3) Leeuwenhoek
(4) Brown.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is responsible for the mechanical support, protein synthesis and enzyme transport ?
(1) Cell membrane
(2) Mitochondria
(3) Dictyosome
(4) Endoplasmic reticulum
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySpecific proteins responsible for the flow of materials and information into the cell are called
(1) membrane receptors
(2) carrier proteins
(3) integral proteins
(4) none of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWho invented electron microscope ?
(1) Jansen
(2) Edison
(3) Knoll and Ruska
(4) Landsteiner
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhat is a plasmid ?
(1) Bacterial, linear, dsDNA
(2) Extra chromosomal linear RNA
(3) Extra chromosomal circular dsDNA
(4) Autonomously replicating circular RNA
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCell theory was proposed by
(1) a botanist
(2) a zoologist
(3) a botanist and a zoologist
(4) a psychologist.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following organelles contain DNA?
(i) Mitochondria (ii) Chloroplasts (iii) Golgi bodies (iv) Ribosomes
(1) (i) and (ii)
(2) (ii) and (iii)
(3) (i) only
(4) (iv) only.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyChromatin is made up of:
(1) DNA and protein
(2) DNA and histone
(3) DNA, RNA, protein
(4) RNA, histone and oil bodies.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following is correct for the transmembrane proteins in lipid bilayer of plasma membrane?
(1) They are absent in animal cells.
(2) They act as channel proteins.
(3) They are absent in plant cells.
(4) They are only externally located
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology