How many of the following biomolecules can be digested by lysosomes?

(Carbohydrates, proteins, lipids, nucleic acids)

(A)4

(B)3

(C)2

(D)1

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Which of the following is not true about cell wall

(A)protects cell from mechanical damage

(B)permeable to water

(C)It’s a living structure

(D)absent in animals

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Galactans and mannans are the important component of cell wall of

(A)Plant

(B)Algae

(C)Fungi

(D)Bacteria

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The common component between the cell wall of algae and plants is

(A)cellulose

(B)Hemicellulose

(C)Both A and B

(D)Mannans

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Which of the following cell wall comes early and disappears gradually  in the life of plant?

(A)primary cell wall

(B)secondary cell wall

(C)tertiary cell wall

(D)Both A and B

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Which of the following holds the neighbouring cells together

(A)calcium pectate

(B) sodium pectate

(C)Both A and B

(D)manganese pectate

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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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