Golgi body is associated with

(a) packaging and storage of material

(b) cell wall formation

(c) transport of enzyme

(d) all of the above

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Which of the following cytoskelelal components of an eukaryotic cell play a major role in protoplasmic streaming?

(a) Microtubules

(b) microfilaments

(c) Intermediate filaments

(d) None of these

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Free radicals in our body have been implicated in

(a) ageing

(b) certain degenerative disorders

(c) neurodegeneration

(d) all the above

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Which is not true for prokaryotic cells ?

(a) They are smaller than eukaryotic cells.

(b) They lack membrane-bound organelles.

(c) Their genetic material is localised within nucleoid.

(d) They contain a well developed cytoskeleton.

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If there were present no subcellular organelles in a eukaroytic cell, the rate of metabolism will

(a) increase

(b) decrease

(c) not change

(d) increase dramatically.

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Extranuclear genes occurs in

(a) plastids and are not inherited

(b) plasmid and are not inherited

(c) mitochondria and are inherited by female

(d) mitochondria and are inherited by male.

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Some Gram -ve bacteria have peptidoglycan and an extra layer of

(a) lipo-polysaccharide

(b) teichoic acid

(c) cellulose

(d) both (b) and (c).

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A chromosome carrying the centromere at one of the ends is called

(a) acentric

(b) submetacentric

(c) telocentric

(d) metacentric.

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Plasmodesmata connections help in

(a) cytoplasmic streaming

(b) synchronous mitotic divisions

(c) locomotion of unicellular organism

(d) movement of substances between cells.

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DNA is present in

(a) chromosomes and dictyosomes

(b) chloroplasts and lysomes

(c) mitochondria and chloroplasts

(d) mitochondria and endoplasmic reticulum

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