Which of the following connects the cell wall of the neighbouring cells?

(A)plasmodesmata

(B)Desmosomes

(C)Gap junction

(D)Tight junction

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How many layers are present in cell envelope of prokaryotes?

(A)4

(B)3

(C)2

(D)1

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Which of the following is the part of cell envelope?

(A)glycocalyx

(B) cell wall and cell membrane

(C)Both A and B

(D)Glycocalyx and cell wall

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The classification of bacteria into Gram positive and Gram negative had been possible due to

(A)difference in cell envelopes

(B)differences in staining procedure

(C)differences in decolorising process

(D)All of the above

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If glycocalyx is loose then it is called as ____________and if it’s tough and thick then it is called as _________

(A)slime layer, capsule

(B)slime mould ,capsule

(C)capsule, slime layer

(D)capsule, slime mould

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Which of the following is true about cell wall except

(A)determines shape of the cell

(B)prevent cell from bursting and collapsing

(C)selective permeable in nature

(D)provides strong structural support

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Mesosomes extensions can be present in the form of

(A)vesicles

(B)tubules

(C)lamellae

(D)All of the above

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Which of the following is the function of mesosomes.

(A)help in cell wall formation

(B)help in DNA replication and its distribution

(C)help in respiration, secretion processes and increase surface area

(D)All of the above

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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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