Practice Sheet-Cell : The Unit of Life
SET A
Q1. Peptidoglycan in bacterial cell wall is composed of alternating
units of
(a) N-acetylglucosamine and N-acetylmuramic acid
(b) Cellulose and hemicellulose
© Chitin and mannose
(d) Xylose and glucose
Q2. In Gram-negative bacteria, periplasmic space is located between
(a) Plasma membrane and cytoplasm
(b) Outer membrane and plasma membrane
© Plasma membrane and cell wall
(d) Cell wall and capsule
Q3. Which bacterial structure serves as reserve material but is not
surrounded by membrane?
(a) Inclusion bodies
(b) Glycocalyx
© Ribosomes
(d) Plasmids
Q4. Cyanophycean starch is stored in
(a) Peroxisomes
(b) Inclusion bodies
,© Plastoglobuli
(d) Phycobilisomes
Q5. Gas vacuoles in prokaryotes provide
(a) Mechanical strength
(b) Buoyancy regulation
© Protection against desiccation
(d) Photosynthetic pigments
Q6. Mesosomes in bacteria are structurally formed by
(a) Infoldings of plasma membrane
(b) Outgrowths of cell wall
© Membrane-bound vesicles
(d) Ribosome clusters
Q7. Polyhydroxybutyrate (PHB) granules serve as
(a) Lipid reserve
(b) Protein reserve
© Inorganic reserve
(d) Nucleic acid reserve
Q8. Which statement is incorrect about cell envelope of
Mycobacterium?
(a) Contains mycolic acid
(b) Has high lipid content
© Peptidoglycan absent
(d) Waxy surface imparts pathogenicity
,Q9. Sulphur granules in bacteria function as
(a) Electron donors in energy metabolism
(b) Energy storage lipids
© Structural reserves for proteins
(d) Nucleic acid precursors
Q10. Inclusion bodies differ from cell organelles because
(a) They are non-living, non-membranous
(b) They contain DNA
© They generate ATP
(d) They participate in protein synthesis
Q11. Inner mitochondrial membrane is folded into cristae to
(a) Store enzymes of glycolysis
(b) Increase surface area for ATP synthesis
© Provide anchorage to ribosomes
(d) Allow DNA replication
Q12. Cardiolipin is a unique lipid component of
(a) Plasma membrane
(b) Mitochondrial inner membrane
© Chloroplast envelope
(d) Endoplasmic reticulum
Q13. Porins are present in
(a) Outer mitochondrial membrane
, (b) Plasma membrane
© Thylakoid
(d) Ribosomes
Q14. Assertion (A): Plasma membrane maintains selective
permeability.
Reason ®: It contains integral proteins facilitating transport.
(a) A true, R true, R correct explanation
(b) A true, R true, R not correct explanation
© A true, R false
(d) A false, R true
Q15. The structural polysaccharide of fungal cell wall is
(a) Chitin
(b) Cellulose
© Peptidoglycan
(d) Pectin
Q16. Which is the only double-membrane bound organelle without
DNA and ribosomes?
(a) Chloroplast
(b) Mitochondria
© Nucleus
(d) None
Q17. Which organelle maintains osmotic balance in plant cells by
storing ions?
(a) Plastid
SET A
Q1. Peptidoglycan in bacterial cell wall is composed of alternating
units of
(a) N-acetylglucosamine and N-acetylmuramic acid
(b) Cellulose and hemicellulose
© Chitin and mannose
(d) Xylose and glucose
Q2. In Gram-negative bacteria, periplasmic space is located between
(a) Plasma membrane and cytoplasm
(b) Outer membrane and plasma membrane
© Plasma membrane and cell wall
(d) Cell wall and capsule
Q3. Which bacterial structure serves as reserve material but is not
surrounded by membrane?
(a) Inclusion bodies
(b) Glycocalyx
© Ribosomes
(d) Plasmids
Q4. Cyanophycean starch is stored in
(a) Peroxisomes
(b) Inclusion bodies
,© Plastoglobuli
(d) Phycobilisomes
Q5. Gas vacuoles in prokaryotes provide
(a) Mechanical strength
(b) Buoyancy regulation
© Protection against desiccation
(d) Photosynthetic pigments
Q6. Mesosomes in bacteria are structurally formed by
(a) Infoldings of plasma membrane
(b) Outgrowths of cell wall
© Membrane-bound vesicles
(d) Ribosome clusters
Q7. Polyhydroxybutyrate (PHB) granules serve as
(a) Lipid reserve
(b) Protein reserve
© Inorganic reserve
(d) Nucleic acid reserve
Q8. Which statement is incorrect about cell envelope of
Mycobacterium?
(a) Contains mycolic acid
(b) Has high lipid content
© Peptidoglycan absent
(d) Waxy surface imparts pathogenicity
,Q9. Sulphur granules in bacteria function as
(a) Electron donors in energy metabolism
(b) Energy storage lipids
© Structural reserves for proteins
(d) Nucleic acid precursors
Q10. Inclusion bodies differ from cell organelles because
(a) They are non-living, non-membranous
(b) They contain DNA
© They generate ATP
(d) They participate in protein synthesis
Q11. Inner mitochondrial membrane is folded into cristae to
(a) Store enzymes of glycolysis
(b) Increase surface area for ATP synthesis
© Provide anchorage to ribosomes
(d) Allow DNA replication
Q12. Cardiolipin is a unique lipid component of
(a) Plasma membrane
(b) Mitochondrial inner membrane
© Chloroplast envelope
(d) Endoplasmic reticulum
Q13. Porins are present in
(a) Outer mitochondrial membrane
, (b) Plasma membrane
© Thylakoid
(d) Ribosomes
Q14. Assertion (A): Plasma membrane maintains selective
permeability.
Reason ®: It contains integral proteins facilitating transport.
(a) A true, R true, R correct explanation
(b) A true, R true, R not correct explanation
© A true, R false
(d) A false, R true
Q15. The structural polysaccharide of fungal cell wall is
(a) Chitin
(b) Cellulose
© Peptidoglycan
(d) Pectin
Q16. Which is the only double-membrane bound organelle without
DNA and ribosomes?
(a) Chloroplast
(b) Mitochondria
© Nucleus
(d) None
Q17. Which organelle maintains osmotic balance in plant cells by
storing ions?
(a) Plastid
