Cytochromes are found in

(a) matrix of mitochondria

(b) outer wall of mitochondria

(c) cristae of mitochondria

(d) lysosomes

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Which structures perform the function of mitochondria in bacteria?

(a) Nucleoid

(b) Ribosomes

(c) Cell wall

(d) Mesosomes

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The solid linear cytoskeletal elements having a diameter of 6nm and made up of a single type of monomer are known as

(a) microtubules

(b) microfilaments

(c) intermediate filaments

(d) lamins

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The osmotic expansion of a cell kept in water is chiefly regulated by

(a) mitochondria

(b) vacuoles

(c) plastids

(d) ribosomes

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The motile bacteria are able to move by

(a) fimbriae

(b) flagella

(c) cilia

(d) pili

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A major site for synthesis of lipids is

(a) RER

(b) SER

(c) symplast

(d) nucleoplasm

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The Golgi complex plays a major role

(1) in trapping the light and tranforming it into chemical energy

(2) in digesting proteins and carbohydrates

(3) as energy transferring organelles

(4) in post translational modificaiton of proteins and glycosidation of lipids

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Which one; of the following organelle in the figure correctly matches with its function?

(a) Rough endoplasmic reticulum, formation of glycoproteins

(b) Golgi apparatus, protein synthesis

(c) Golgi apparatus, formation of carbohydrates

(d) Rough endoplasmic reticulum, protein synthesis

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Ribosomal RNA is actively synthesized in

(a) lysosomes

(b) nucleolus

(c) nucleoplasm

(d) ribosomes

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What is true about ribosomes?

(a) The prokaryotic ribosomes are 80 S, where S stands for sedimentation coefficient

(b) These are composed of ribonucleic acid and proteins

(c) These are found only in eukaryotic cells

(d) These are self-splicing introns of some RNAs

 

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