NEET Biology Cell Structure and Functions Mock Test

NEET Biology Cell Structure and Functions Mock Test

Extra chromosomal, small, circular, naked DNA present in some bacteria is called

(A) Transposon
(B) Extron
(C) Intron
(D) Plasmid



Plasmids

(A) Contain antibiotic resistance gens
(B) Contain ds DNA molecule
(C) Are self replicable
(D) AH the above



Unique features of prokaryotic cells are the presence of

(A) Mesosomes
(B) Inclusion bodies
(C) Plasmids
(D) All the above



In prokaryotes the cell envelope includes

(A) Glycocalyx
(B) Cell wall
(C) Cell membrane
(D) All the above



Bacteria are divided into Gram +ve and Gram – ve based on

(A) Nature of cell envelope
(B) Response to staining
(C) Plasmids
(D) a & b



The structure which prevents the bacteria from bursting or collapsing is

(A) Cell wall
(B) Glycocalyx
(C) Cell membrane
(D) Mesosomes



Mesosomes include

(A) Vesicles
(B) Tubules
(C) Lamellae
(D) All the above



Mesosomes help in
(A) Cell wall formation
(B)DNA replication
(C) Replication
(D) Secretion
(E)To increase enzymatic content

(A) B, C only
(B) C, D only
(C) A, C only
(D) A, B, C, D, E



In cyanobacteria, membranous extension with pigments into the cytoplasm are called

(A) Chromosomes
(B) Chromomeres
(C) Chromatophores
(D) Chloroplasts



Bacterial flagellum is composed of

(A) Basal body
(B) Hook
(C) Filament
(D) All the above



Function of fimbriae is

(A) Attachment
(B) Absorption
(C) Secretion
(D) Reproduction



In prokaryotes the ribosomes are associated with

(A) Cytosol
(B) Cell wall
(C) Plasma membrane
(D) Nucleoid



Type of ribosomes present in prokaryotes is

(A) 80s
(B) 50s
(C) 30s
(D) 70s



Site of protein synthesis in a prokaryotic cell is

(A) Cytosol
(B) Plasma membrane
(C) Ribosomes
(D) Gas vacuoles



Reserve materials in prokaryotic cells are stored in the cytoplasm in the form of

(A) Ribosomes
(B) Polysomes
(C) Inclusion bodies
(D) Vacuoles



Amembrane bound systems which are present freely in the cytoplasm

(A) Ribosomes
(B) Inclusion bodies
(C) Residual bodies
(D) Baker’s bodies



Amembrane systems that lie freely in the cytoplasm includes

(A) Phosphate granules
(B) Glycogen granules
(C) Cyanophycean granules
(D) All the above



Inclusion bodies that are exclusively found aquatic blue green, purple and green photosynthetic bacteria

(A) Vacuoles
(B) Palade granules
(C) Gas vacuoles
(D) Elementary bodies.



Nucleus with nuclear membrane is found in

(A) Protists
(B) Plant & fungal cells
(C) Animal cells
(D) All



Eukaryotic cells may differ with prokaryotic cells in having

(A) Locomotory structures
(B) Cytoskeleton
(C) Nucleus with nuclear membrane
(D) All the above