Which of the following is true about chromatophores

(A)its’s a plasma membrane infolding

(B)site of photosynthesis

(C)contain pigments

(D)All of the above

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Bacterial flagella is composed of

(A)basal body, Hook, filament

(B) basal body and filament

(C)  Hook and filament,

(D)Hook, filament and base

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Which of the following is correct except

(A)Pili and Fimbriae play role in motility

(B)Flagella, pili, and fimbriae are surface structures

(C)pili and fimbriae help in attachment to surfaces

(D)Both A and C

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Which of the following is true

(A)bacterial flagella is made up of flagellin protein

(B)bacterial pili is made up of pilin protein

(C) bacterial flagella is different from eukaryotic flagella

(D)All of the above

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How many of the following structures are present in Bacteria?

(Flagella, cilia, pili, fimbriae)

(A)4

(B)3

(C)2

(D)1

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Where can we find the ribosomes in Bacteria

(A)In cytoplasm

(B)In mitochondria

(C)On Endoplasmic reticulum

(D)All of these

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Several ribosomes may attach to a single mRNA and form a chain called

(A)Polyribosomes

(B)polysomes

(C)Both A and B

(D)Polycistronic mRNA

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In prokaryotes which of the following ribosome subunit is absent

(A)30s

(B)50s

(C)40s

(D)70s

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Which of the following is true about ribosome except

(A)site of protein synthesis

(B)universal cell organelle

(C)70s is present only in prokaryotes

(D)80s is present in eukaryotes

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Polysomes translate mRNA into

(A)proteins

(B)carbohydrates                                

(C)DNA

(D)RNA

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