Question : Smooth endoplasmic reticulum is well developed in the cells which synthesize
a) steorids
b) carbohydrates
c) proteins
d) all of these
Answer : A
Question : Quasi-fluid nature of membrane is due to
a) Phospholipid
b) Peripheral protein
c) Integral protein
d) Sugar moiety
Answer : A
Question : Gas vacuole is present in
a) All of the above
b) Green photosynthetic bacteria
c) Purple photosynthetic bacteria
d) Blue green algae
Answer : A
Question : Which of the following feature is not associated with centrosome?
a) Lipid bilayer covering
b) Two centriole
c) Two cylindrical structures
d) Pericentriolar material
Answer : A
Question : What is the site of DNA and centriole duplication respectively
a) Nucleus, cytoplasm
b) Nucleus, nucleus
c) Cytoplasm, nucleus
d) Nucleus, nucleolous
Answer : A
Question : Cell wall
a) All are correct
b) Contains minerals like calcium carbonate in certain algae
c) Helps in cell to cell interaction
d) Helps in cell to cell interaction
Answer : A
Question : Golgi bodies are involved in
a) All of the above
b) Modification of proteins
c) Synthesis of glycolipids
d) Recycling of broken plasma membrane during endocytosis
Answer : A
Question : Aleuroplasts, amyloplasts and elaioplasts
a) Store protein, starch and fat respectively
b) Help in photolysis of water
c) Store reserve food and pigments
d) Divide by multiple fission
Answer : A
Question : Reformation of nucleolus, golgi complex and ER occurs in
a) Anaphase
b) Metaphase
c) Both
d) None of these
Answer : A
Question : Which group of organelles is involved in synthesis of substances needed by cell?
a) Ribosome, RER, SER
b) RER, lysosome, vacuole
c) Lysosome, vacuole, ribosome
d) Noner of these
Answer : A
Question : Organelles can be separated from cell homogenate through
a) chromatography
b) X-rays diffraction
c) differential centrifugation
d) auto-radiography
Answer : C
Question : Electron microscope has a high resolution power. This is due to
a) electromagnetic lenses
b) very low wavelength of electron beam
c) low wavelength of light source used
d) high numerical aperture of glass lenses used
Answer : B
Question : Magnification of compound microscope is not connected with
a) numerical aperture
b) focal length of objective
c) focal length of eye piece
d) tube length
Answer : A
Question : Resolution power is the ability to
a) distinguish two trees
b) distinguish two close objects
c) distinguish amongst organelles
d) magnify image
Answer : B
Question : Angstrom (Å) is equal to
a) 0.01 μm
b) 0.001μm
c) 0.0001μm
d) 0.00001 μm
Answer : C
Question : Binding of specific protein on regulatory DNA sequence can be studied by means of
a) ultra centrifugation
b) electron microscope
c) light microscope
d) X-rays crystallography
Answer : D
Question : A student wishes to study the cell structure under a light microscope having 10X eyepiece and 45X objective. He should illuminate the object by which one of the following colours of light so as to get the best possible resolution?
a) Blue
b) Green
c) Yellow
d) Red
Answer : A
Question : A major break through in the studies of cells came with the development of electron microscope. This is because
a) the resolving power of the electron microscope is 200-350 nm as compared to 0.1- 0.2 for the light microscope
b) electron beam can pass through thick materials, whereas light microscopy required thin sections
c) the electron microscope is more powerful than the light microscope as it uses a beam of electrons which has wavelength much longer than that of photons
d) the resolution power of the electron microscope is much higher than that of the light microscope
Answer : D
Question : Gel electrophoresis is used for
a) cutting of DNA into fragments
b) separation of DNA fragments according to their size
c) construction of recombinant DNA by joining with cloning vectors
d) isolation of DNA molecule
Answer : B
Question : Polyribosomes are aggregates of
a) ribosomes and rRNA
b) only rRNA
c) peroxisomes
d) several ribosomes held together by string of mRNA
Answer : D
Question : Plasma membrane is made up of
a) proteins and carbohydrates
b) proteins and lipids
c) proteins, lipids and carbohydrates
d) proteins, some nucleic acid and lipids
Answer : C
Question : Fluid mosaic model of cell membrane was put forward by
a) Danielli and Davson
b) Singer and Nicolson
c) Garner and Allard
d) Watson and Crick
Answer : B
Question : Addition of new cell wall particles amongst the existing ones is
a) deposition
b) apposition
c) intussusception
d) aggregation
Answer : B
Question : Cell wall shows
a) complete permeability
b) semi-permeability
c) differential permeability
d) impermeability
Answer : A
Question : Ribosomes were discovered by
a) Golg
b) Porter
c) de Robertis
d) Palade
Answer : D
Question : Ribosomes are the centre for
a) respiration
b) photosynthesis
c) protein synthesis
d) fat synthesis
Answer : C
Question : An outer covering membrane is absent over
a) nucleolus
b) lysosome
c) mitochondrion
d) plastids
Answer : A
Question : All plastids have similar structure because they can
a) store starch, lipids and proteins
b) get transformed from one type to another
c) perform same function
d) be present together
Answer : B
Question : Oxysomes or F-F1 particles occur on
a) thylakoids
b) mitochondrial surface
c) inner mitochondrial membrane
d) chloroplast surface
Answer : C
Question : Which one is apparato reticulare interno?
a) Golgi apparatus
b) Endoplasmic reticulum
c) Microfilaments
d) Microtubules
Answer : A
Question : Which is correct about cell theory in view of current status of our knowledge about cell structure?
a) It needs modification due to discovery of subcellular structures like chloroplasts and mitochondria
b) Modified cell theory means that all living beings are composed of cells capable of reproducing
c) Cell theory does not hold good because all living beings do not have cellular organisation (eg, viruses)
d) Cell theory means that all living objects consist of cells whether or not capable of reproducing
Answer : C
Question : In plant cells, peroxisomes are associated with
a) photorespiration
b) phototropism
c) photoperiodism
d) photosynthesis
Answer : A
Question : Name of Schleiden and Schwann are associated with
a) protoplasm as the physical basis of life
b) cell theory
c) theory of cell lineage
d) nucleus functions as control centre of cell
Answer : B
Question : Membranous bag with hydrolytic enzymes which is used for controlling intracellular digestion of macromolecules is
a) endoplasmic reticulum
b) nucleosome
c) lysosome
d) phagosome
Answer : C
Question : Golgi apparatus is absent in
a) higher plants
b) yeast
c) bacteria and blue-green algae
d) None of the above
Answer: B
Question : Inner membrane convolutions of a mitochondrion are known as
a) lamellae
b) thylakoids
c) grana
d) cristae
Answer : D
Question : Cell organelles having hydrolases/digestive enzymes are
a) peroxisomes
b) lysosomes
c) ribosomes
d) mesosomes
Answer : B
Question : Organelle/organoid involved in genetic engineering is
a) plasmid
b) mitochondrion
c) Golgi apparatus
d) lomasome
Answer : A
Question : Mitochondrial cristae are sites of
a) breakdown of macromolecules
b) protein synthesis
c) phosphorylation of flavoproteins
d) oxidation-reduction reactions
Answer : D
Question : Organelle having flattened membrane bound cisternae and lying near the nucleus is
a) Golgi apparatus
b) mitochondrion
c) centriole
d) nucleolus
Answer : A
Question : Series of reactions which can convert fatty acids to sugars in plants but not in animals is
a) Krebs cycle
b) glyoxylate cycle
c) Ornithine cycle
d) glycolysis
Answer : B
Question : The prokaryotic flagella possess
a) unit membrane enclosed fibre
b) protein membrane enclosed fibre
c) ‘9+2’ membrane enclosed structure
d) helically arranged protein molecule
Answer : D
Question : The desmosomes are concerned with
a) cytolysis
b) cell division
c) cell adherence
d) cellular excretion
Answer : C
Question : The function of rough endoplasmic reticulum is
a) fat synthesis
b) lipid synthesis
c) protein synthesis
d) steroid synthesis
Answer : C
Question : Lysosomes have a high content of
a) hydrolytic enzymes
b) lipoproteins
c) polyribosomes
d) DNAligases
Answer : A
Question : Protein synthesis in an animal cell takes place
a) only in cytoplasm
b) in the nucleolus as well as in the cytoplasm
c) in the cytoplasm as well as in mitochondria
d) only on ribosomes attached to nucleus
Answer : C
Question : The mechanism of ATP formation both in chloroplast and mitochondria is explained by
a) Relay pump theory of Godlewski
b) Cholodny-Went’s model
c) Chemiosmotic theory
d) Munch’s mass flow hypothesis
Answer : C
Question : The proteins are synthesized at
a) ribosomes
b) mitochondria
c) centrosomes
d) Golgi bodies
Answer : A
Question : Microtubule is involved in the
a) cell division
b) membrane architecture
c) muscle contraction
d) DNA recognition
Answer : A
Question : Some of the enzymes which are associated in converting fats into carbohydrates, are present in
a) liposomes
b) Golgi bodies
c) microsomes
d) glyoxysomes
Answer : D
Question : Photosynthetic bacteria have pigments in
a) chromoplasts
b) leucoplasts
c) chloroplasts
d) chromatophore
Answer : D
Question : Which of the following organ has single membrane?
a) Nucleus
b) Cell wall
c) Mitochondria
d) Spherosomes
Answer : D
Question : Lysosomes are reservoirs of
a) RNA and protein
b) fats
c) secretory glycoproteins
d) hydrolytic enzymes
Answer : D
Question : In an animal cell, protein synthesis takes place
a) only on the ribosomes present in cytosol
b) only on ribosomes attached to nuclear envelope and ER
c) on ribosomes present in the nucleolus as well as in cytoplasm
d) on ribosomes present in the cytosol as well as in the mitochondria
Answer : D
Question : The cell organelle involved in glycosylation of protein is
a) ribosome
b) peroxisome
c) endoplasmic reticulum
d) mitochondria
Answer : C
Question : Microtubules absent in
a) mitochondria
b) centriole
c) flagella
d) spindle fibres
Answer : A
Question : In fluid mosaic model of plasma membrane
a) upper layer is non-polar and hydrophilic
b) upper layer is polar and hydrophobic
c) phospholipids form a bimolecular layer in middle part
d) proteins form a middle layer
Answer : C
Question : In which one of the following is nitrogen not a constituent?
a) Pepsin
b) Idioblast
c) Bacteriochlorophyll
d) Invertase
Answer : B
Question : Flagella of prokaryotic and eukaryotic cells differ in
a) type of movement and placement in cell
b) location in cell and mode of functioning
c) microtubular organization and type of movement
d) microtubular organization and function
Answer : C
Question : Extra nuclear inheritance is a consequence of presence of genes in
a) mitochondria and chloroplasts
b) endoplasmic reticulum and mitochondria
c) ribosomes and chloroplast
d) lysosomes and ribosomes
Answer : A
Question : In chloroplasts, chlorophyll is present in the
a) outer membrane
b) inner membrane
c) thylakoids
d) stroma
Answer : C
Question : The main organelle involved in modification and routing of newly synthesized proteins to their destinations is
a) chloroplast
b) mitochondria
c) lysosome
d) endoplasmic reticulum
Answer : D
Question : Genes for cytoplasmic male sterility in plants are generally located in
a) mitochondrial genome
b) cytosol
c) chloroplast genome
d) nuclear genome
Answer : A
Question : Chlorophyll in chloroplast is located in
a) grana
b) pyrenoid
c) stroma
d) Both a) and c)
Answer : A
Question : Protein synthesis in an animal cell occurs
a) only on the ribosomes present in cytosol
b) only on ribosomes attached to the nuclear envelope and endoplasmic reticulum
c) on ribosomes present in the nucleolus as well as in cytoplasm
d) on ribosomes present in cytoplasm as well as in mitochondria
Answer : D
Question : According to widely accepted “fluid mosaic model” cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard,
which of the following statements is incorrect?
a) Proteins in cell membranes can travel within the lipid bilayer
b) Proteins can also undergo flip-flop movements in the lipid bilayer
c) Proteins can remain confined within certain domains of the membrane
d) Many proteins remain completely embedded within the lipid bilayer
Answer : B
Question : Which of the following statements regarding mitochondrial membrane is not correct?
a) The enzymes of the electron transfer chain are embedded in the outer membrane
b) The inner membrane is highly convoluted forming a series of infoldings
c) The outer membrane resembles a sieve
d) The outer membrane is permeable to all kinds of molecules
Answer : A
Question : During photorespiration, the oxygen consuming reaction occurs in
a) stroma of chloroplasts and mitochondria
b) stroma of chloroplasts and peroxisomes
c) grana of chloroplasts and peroxisomes
d) stroma of chloroplasts
Answer : B
Question : Select the wrong statement from the following
a) both chloroplasts and mitochondria contain an inner and an outer membrane
b) both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane
c) both chloroplasts and mitochondria contain DNA
d) the chloroplasts are generally much larger than mitochondria
Answer : B
Question : Organelles can be separated from cell homogenate through
a) chromatography
b) X-rays diffraction
c) differential centrifugation
d) auto-radiography
Question : Electron microscope has a high resolution power. This is due to
a) electromagnetic lenses
b) very low wavelength of electron beam
c) low wavelength of light source used
d) high numerical aperture of glass lenses used
Question : Magnification of compound microscope is not connected with
a) numerical aperture
b) focal length of objective
c) focal length of eye piece
d) tube length
Question : Resolution power is the ability to
a) distinguish two trees
b) distinguish two close objects
c) distinguish amongst organelles
d) magnify image
Question : Angstrom (Å) is equal to
a) 0.01 μm b) 0.001μm
c) 0.0001μm d) 0.00001 μm
Question : Binding of specific protein on regulatory DNA sequence can be studied by means of
a) ultra centrifugation
b) electron microscope
c) light microscope
d) X-rays crystallography
Question : A student wishes to study the cell structure under a light microscope having 10X eyepiece and 45X objective. He should illuminate the object by which one of the following colours of light so as to get the best possible resolution?
a) Blue b) Green
c) Yellow d) Red
Question : A major break through in the studies of cells came with the development of electron microscope. This is because
a) the resolving power of the electron microscope is 200-350 nm as compared to 0.1- 0.2 for the light microscope
b) electron beam can pass through thick materials, whereas light microscopy required thin sections
c) the electron microscope is more powerful than the light microscope as it uses a beam of electrons which has wavelength much longer than that of photons
d) the resolution power of the electron microscope is much higher than that of the light microscope
Question : Gel electrophoresis is used for
a) cutting of DNA into fragments
b) separation of DNA fragments according to their size
c) construction of recombinant DNA by joining with cloning vectors
d) isolation of DNA molecule
Question : Polyribosomes are aggregates of
a) ribosomes and rRNA
b) only rRNA
c) peroxisomes
d) several ribosomes held together by string of mRNA
Question : Plasma membrane is made up of
a) proteins and carbohydrates
b) proteins and lipids
c) proteins, lipids and carbohydrates
d) proteins, some nucleic acid and lipids
Question : Fluid mosaic model of cell membrane was put forward by
a) Danielli and Davson
b) Singer and Nicolson
c) Garner and Allard
d) Watson and Crick
Question : Addition of new cell wall particles amongst the existing ones is
a) deposition b) apposition
c) intussusception
d) aggregation
Question : Cell wall shows
a) complete permeability
b) semi-permeability
c) differential permeability
d) impermeability
Question : Ribosomes were discovered by
a) Golgi b) Porter
c) de Robertis d) Palade
Question : Ribosomes are the centre for
a) respiration
b) photosynthesis
c) protein synthesis
d) fat synthesis
Question : An outer covering membrane is absent over
a) nucleolus
b) lysosome
c) mitochondrion
d) plastids
Question : All plastids have similar structure because they can
a) store starch, lipids and proteins
b) get transformed from one type to another
c) perform same function
d) be present together
Question : Oxysomes or F0-F1 particles occur on
a) thylakoids
b) mitochondrial surface
c) inner mitochondrial membrane
d) chloroplast surface
Question : Which one is apparato reticulare interno?
a) Golgi apparatus
b) Endoplasmic reticulum
c) Microfilaments
d) Microtubules
Question : Which is correct about cell theory in view of current status of our knowledge about cell structure?
a) It needs modification due to discovery of subcellular structures like chloroplasts and mitochondria
b) Modified cell theory means that all living beings are composed of cells capable of reproducing
c) Cell theory does not hold good because all living beings do not have cellular organisation (eg, viruses)
d) Cell theory means that all living objects consist of cells whether or not capable of reproducing
Question : In plant cells, peroxisomes are associated with
a) photorespiration
b) phototropism
c) photoperiodism
d) photosynthesis
Question : Name of Schleiden and Schwann are associated with
a) protoplasm as the physical basis of life
b) cell theory
c) theory of cell lineage
d) nucleus functions as control centre of cell
Question : Membranous bag with hydrolytic enzymes which is used for controlling intracellular digestion of macromolecules is
a) endoplasmic reticulum
b) nucleosome
c) lysosome
d) phagosome
Question : Golgi apparatus is absent in
a) higher plants
b) yeast
c) bacteria and blue-green algae
d) None of the above
Question : Inner membrane convolutions of a mitochondrion are known as
a) lamellae
b) thylakoids
c) grana
d) cristae
Question : Cell organelles having hydrolases/digestive enzymes are
a) peroxisomes
b) lysosomes
c) ribosomes
d) mesosomes
Question : Organelle/organoid involved in genetic engineering is
a) plasmid
b) mitochondrion
c) Golgi apparatus
d) lomasome
Question : Mitochondrial cristae are sites of
a) breakdown of macromolecules
b) protein synthesis
c) phosphorylation of flavoproteins
d) oxidation-reduction reactions
Question : Organelle having flattened membrane bound cisternae and lying near the nucleus is
a) Golgi apparatus
b) mitochondrion
c) centriole
d) nucleolus
Question : Series of reactions which can convert fatty acids to sugars in plants but not in animals is
a) Krebs cycle
b) glyoxylate cycle
c) Ornithine cycle
d) glycolysis
Question : The prokaryotic flagella possess
a) unit membrane enclosed fibre
b) protein membrane enclosed fibre
c) ‘9+2’ membrane enclosed structure
d) helically arranged protein molecule
Question : The desmosomes are concerned with
a) cytolysis
b) cell division
c) cell adherence
d) cellular excretion
Question : The function of rough endoplasmic reticulum is
a) fat synthesis
b) lipid synthesis
c) protein synthesis
d) steroid synthesis
Question : Lysosomes have a high content of
a) hydrolytic enzymes
b) lipoproteins
c) polyribosomes
d) DNAligases
Question : Protein synthesis in an animal cell takes place
a) only in cytoplasm
b) in the nucleolus as well as in the cytoplasm
c) in the cytoplasm as well as in mitochondria
d) only on ribosomes attached to nucleus
Question : The mechanism of ATP formation both in chloroplast and mitochondria is explained by
a) Relay pump theory of Godlewski
b) Cholodny-Went’s model
c) Chemiosmotic theory
d) Munch’s mass flow hypothesis
Question : The proteins are synthesized at
a) ribosomes
b) mitochondria
c) centrosomes
d) Golgi bodies
Question : Microtubule is involved in the
a) cell division
b) membrane architecture
c) muscle contraction
d) DNA recognition
Question : Some of the enzymes which are associated in converting fats into carbohydrates, are present in
a) liposomes
b) Golgi bodies
c) microsomes
d) glyoxysomes
Question : Photosynthetic bacteria have pigments in
a) chromoplasts
b) leucoplasts
c) chloroplasts
d) chromatophore
Question : Which of the following organ has single membrane?
a) Nucleus
b) Cell wall
c) Mitochondria
d) Spherosomes
Question : Lysosomes are reservoirs of
a) RNA and protein
b) fats
c) secretory glycoproteins
d) hydrolytic enzymes
Question : In an animal cell, protein synthesis takes place
a) only on the ribosomes present in cytosol
b) only on ribosomes attached to nuclear envelope and ER
c) on ribosomes present in the nucleolus as well as in cytoplasm
d) on ribosomes present in the cytosol as well as in the mitochondria
Question : The cell organelle involved in glycosylation of protein is
a) ribosome
b) peroxisome
c) endoplasmic reticulum
d) mitochondria
Question : Microtubules absent in
a) mitochondria
b) centriole
c) flagella
d) spindle fibres
Question : In fluid mosaic model of plasma membrane
a) upper layer is non-polar and hydrophilic
b) upper layer is polar and hydrophobic
c) phospholipids form a bimolecular layer in middle part
d) proteins form a middle layer
Question : In which one of the following is nitrogen not a constituent?
a) Pepsin
b) Idioblast
c) Bacteriochlorophyll
d) Invertase
Question : Flagella of prokaryotic and eukaryotic cells differ in
a) type of movement and placement in cell
b) location in cell and mode of functioning
c) microtubular organization and type of movement
d) microtubular organization and function
Question : Extra nuclear inheritance is a consequence of presence of genes in
a) mitochondria and chloroplasts
b) endoplasmic reticulum and mitochondria
c) ribosomes and chloroplast
d) lysosomes and ribosomes
Question : In chloroplasts, chlorophyll is present in the
a) outer membrane
b) inner membrane
c) thylakoids
d) stroma
Question : The main organelle involved in modification and routing of newly synthesized proteins to their destinations is
a) chloroplast
b) mitochondria
c) lysosome
d) endoplasmic reticulum
Question : Genes for cytoplasmic male sterility in plants are generally located in
a) mitochondrial genome
b) cytosol
c) chloroplast genome
d) nuclear genome
Question : Chlorophyll in chloroplast is located in
a) grana
b) pyrenoid
c) stroma
d) Both a) and c)
Question : Protein synthesis in an animal cell occurs
a) only on the ribosomes present in cytosol
b) only on ribosomes attached to the nuclear envelope and endoplasmic reticulum
c) on ribosomes present in the nucleolus as well as in cytoplasm
d) on ribosomes present in cytoplasm as well as in mitochondria
Question : According to widely accepted “fluid mosaic model” cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard,
which of the following statements is incorrect?
a) Proteins in cell membranes can travel within the lipid bilayer
b) Proteins can also undergo flip-flop movements in the lipid bilayer
c) Proteins can remain confined within certain domains of the membrane
d) Many proteins remain completely embedded within the lipid bilayer
Question : Which of the following statements regarding mitochondrial membrane is not correct?
a) The enzymes of the electron transfer chain are embedded in the outer membrane
b) The inner membrane is highly convoluted forming a series of infoldings
c) The outer membrane resembles a sieve
d) The outer membrane is permeable to all kinds of molecules
Question : During photorespiration, the oxygen consuming reaction occurs in
a) stroma of chloroplasts and mitochondria
b) stroma of chloroplasts and peroxisomes
c) grana of chloroplasts and peroxisomes
d) stroma of chloroplasts
Question : Select the wrong statement from the following
a) both chloroplasts and mitochondria contain an inner and an outer membrane
b) both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane
c) both chloroplasts and mitochondria contain DNA
d) the chloroplasts are generally much larger than mitochondria
