Cell & Cell Division Part III

1) Ribosomes of bacteria, mitochondria and chloroplasts are of
a) 50 S type
b) 80 S type
c) 70 S type
d) 30 S type

2) Crystalloids are constituents of
a) Raphides
b) Aleurone grains
c) Starch grains
d) Middle lamella

3) The chloroplast is
a) Completely dependent on the nucleus
b) Completely independent of the nucleus
c) an autonomous body
d) a semi-autonomous body

4) The starch grains in a potato tuber are located in the
a) Ribosomes
b) Nucleus
c) Leucoplasts
d) Golgi bodies

5) Dictyosomes are
a) Class of ribosomes
b) Places of flagellar origin
c) Respiratory particles
d) Golgi bodies

6) Which of the following is not a non-protoplasmic cell inclusion?
a) Cystolith
b) Starch grain
c) Raphide
d) Mitochondrion

7) If the contents of a leaf tissue are carefully fractionated, which part of the fractionate could be called alive?
a) Mitochondria
b) Endoplasmic reticulum
c) Cell wall
d) Ribosome

8) The sedimentation coefficient in case of ribosomes of plastids is
a) 70 S
b) 80 S
c) 50 S
d) 10 S

9) Lysosomes are surrounded by
a) One membrane
b) Two membranes
c) Three membranes
d) None of the above

10) A double membrane is absent in the
a) Mitochondria
b) Chloroplast
c) Nucleus
d) Lysosomes

11) Polyribosomes are aggregates of
a) Ribosomes and rRNA
b) Only rRNA
c) Peroxisomes
d) Several ribosomes held together by a string of mRNA

12) Cellulose and hemicellulose – the constituents of the cell wall – are synthesized by the
a) Lysosomes
b) Microbodies
c) Smooth endoplasmic reticulum
d) Golgi apparatus

13) Most of the hydrolytic enzymes of lysosomes function at
a) Acidic pH
b) Basic pH
c) Neutral pH
d) Any pH

14) The endoplasmic reticulum was discovered by
a) Porter
b) Altmann
c) Golgi
d) Robertson

15) Cystoliths are made of
a) Calcium oxalate
b) Calcium chloride
c) Calcium carbonate
d) Potassium bicarbonate

16) Cell organelles are embedded in the
a) Cytoplasmic membrane
b) Protoplasm
c) Cytoplasm
d) None of the above

17) Golgi bodies occur in
a) All cells
b) Bacterial cells
c) Erythrocytes
d) Most cells except erythrocytes and bacterial cells

18) Oxysomes or
particles occur on the

a) Thylakoids
b) Mitochondrial surface
c) Inner mitochondrial membrane
d) Chloroplast surface

19) The branch of science dealing with the study of cells is
a) Histology
b) Cytology
c) Morphology
d) Anatomy

20) The most abundant substance of the middle lamella is
a) Suberin
b) Cutin
c) Lignin
d) Pectin

21) The cytoplasm of one cell is continuous with that of the adjacent cell through
a) Plasmodesmata
b) Pits
c) Endoplasmic reticulum
d) Middle lamella

22) The cell vacuole contains
a) Water
b) Metabolic gases
c) Water and dissolved substances
d) Cytoplasm

23) The tonoplast, a differentially permeable membrane, surrounds the
a) Vacuole
b) Nucleus
c) Cytoplasm
d) Lysosome

24) Basal bodies are associated with the
a) Phragmoplast
b) Cilia and flagella
c) Cell plate
d) Kinetochore

25) Name the correct order of relative size:
a) Nucleus, cell, chromosomes, oxygen atom and water molecule
b) Cell, nucleus, water molecule, oxygen atom, chromosome
c) Chromosome, cell, nucleus, water, molecule and oxygen atom
d) Cell, nucleus, chromosome, water molecule and oxygen atom

26) Cell sap is the
a) Living content of the cytoplasm
b) Nonliving content of the cytoplasm
c) Nonliving content of the vacuole
d) Living content of the vacuole

27) Plastids develop from the
a) Nucleus
b) Vacuole
c) Proplastid
d) Cell wall

28) Plastids possess
a) Cristae
b) Thylakoids
c) Microtubules
d) Porous membranes

29) Conversion of green tomatoes into the red form involves the
a) Formation of chromoplasts from chloroplasts
b) Destruction of chloroplasts and development of chromoplasts from leucoplasts
c) Formation of chromoplasts from proplastids
d) All the above

30) Plastids present in unilluminated cells are
a) Chloroplasts
b) Chromoplasts
c) Leucoplasts
d) Proplastids

31) RER is well developed in cells engaged in the synthesis of
a) Nucleotides
b) Proteins
c) Lipids
d) Secretory products

32) The foldings of the inner mitochondrial membrane are called
a) Grana
b) Thylakoids
c) Cristae
d)

33) The two main components of a ribosome are
a) RNA and proteins
b) DNA and proteins
c) DNA and RNA
d) RNA and lipids

34) The two subunits of 70 S ribosomes are
a) 50 S and 30 S
b) 45 S and 25 S
c) 50 S and 20 S
d) 40 S and 30 S

35) The two subunits of 80 S ribosomes are
a) 40 S and 50 S
b) 40 S and 40 S
c) 60 S and 40 S
d) 50 S and 30 S

36) What will not happen if ribosomes are destroyed?
a) Respiration
b) Carbon assimilation
c) Fat storage
d) Protein synthesis

37) The functional unit of the Golgi apparatus is the
a) Thylakoids
b) Oxysomes
c) Cristae
d) Cisternae

38) The centriole/centrosome takes part in
a) Nucleolus formation
b) Start of cell division
c) Cell plate formation
d) Spindle formation

39) Function of the cell is controlled by
a) Protoplasm
b) Cytoplasm
c) Nucleolus
d) Nucleus

40) Nucleosomes are units of
a) Chromosome
b) DNA
c) RNA
d) Proteins

41) Which one has its own electron transport system?
a) Centriole
b) E.R.
c) Nucleus
d) Mitochondrion

42) Catabolic enzymes occur abundantly in
a) Lysosomes
b) E.R.
c) Golgi bodies
d) Mitochondria

43) Hammerling’s experiments on Acetabularia involved exchanging the
a) Cytoplasm
b) Nucleus
c) Rhizoid and stalk
d) Gametes

44) The cell wall shows
a) Complete permeability
b) Semipermeability
c) Differential permeability
d) Impermeability

45) The cell organelle devoid of DNA is the
a) Ribosome
b) Nucleus
c) Plastid
d) Mitochondrion

46) The cell organelle taking part in photorespiration is the
a) Glyoxisome
b) Peroxisome
c) Dictyosome
d) E.R.

47) The principal protein of cilia and flagella is
a) Globulin
b) Fibrin
c) Flagellin
d) Tubulin

48) The outermost layer of the cell wall is the
a) Plasmalemma
b) Secondary wall
c) Middle lamella
d) Primary wall

49) The smooth endoplasmic reticulum synthesises
a) Carbohydrates
b) Proteins
c) Steroids and lipids
d) All the above

50) Which one of the following plant cells are devoid of a wall?
a) Root hair
b) Stem hair
c) Epidermal cell
d) Gamete

51) DNA occurs in
a) Mitochondria, plastids and chromosomes
b) Chromosomes, Mitochondria and Ribosomes
c) Chromosomes, Mitochondria and Cell Membrane
d) Chromosomes, Ribosomes and Cytoplasm

52) The transformation of chemical energy into a utilisable form occurs in the
a) Mitochondria
b) Lysosomes
c) Endoplasmic reticulum
d) Microsomes

53) The presence of DNA in chloroplasts and mitochondria indicates that
a) Glycolysis occurs in them
b) They originated as independent free living organisms
c) They undergo meiosis and mitosis independent of nucleus
d) They take part in ATP synthesis

54) In a mature plant cell, most of the water occurs in the
a) Cell wall
b) Cytoplasm
c) Nucleus
d) Vacuole

55) Membranes are found in the
a) Cytoplasm, mitochondria and chloroplasts
b) Cytoplasm, nuclei and starch grains
c) Chromosomes, nuclei and mitochondria
d) Chromosomes, chloroplasts and starch grains

56) Mitochondria and chloroplasts are considered to be endosymbionts
of cells because they

a) Do not arise de novo
b) Possess their own nucleic acids
c) Have membranes similar to those of bacteria
d) All the above

57) Ripening fruit softens due to
a) Jelly formation at acidic pH
b) Solubilisation of pectate of middle lamella
c) Conversion of starch into sugar
d) Incorporation of pectate in middle lamella

58) All plastids have a similar structure because they can
a) Store starch, lipids and proteins
b) Get transformed from one type to another
c) Perform the same function
d) Be present together

59) Which one is the function of the nucleolus?
a) DNA replication
b) Ribosome synthesis
c) Organisation of chromosomes
d) Chromatid separation

60) Which one is an electron acceptor?
a) Enzyme
b) Hormone
c) Phytochrome
d) Cytochrome

61) An outer covering membrane is absent over the
a) Nucleolus
b) Lysosome
c) Mitochondrion
d) Plastid

62) Chloroplasts are self replicating units as they possess
a) DNA
b) RNA
c) Neither DNA nor RNA
d) Both DNA and RNA

63) Grana and stroma lamellae occur in the
a) Chloroplast
b) Ribosome
c) Golgi body
d) Mitochondria

64) Filaments present in flagella/cilia are
a) Microfibrils
b) Microtubules
c) Microfilaments
d) Microvilli

65) The Golgi apparatus is absent in
a) Higher plants
b) Yeast
c) Bacteria and Blue-green algae
d) Liver cells

66) A membranous bag with hydrolytic enzymes which is used for controlling
the intracellular digestion of macro-molecules is the

a) Endoplasmic reticulum
b) Nucleosome
c) Lysosome
d) Phagosome

67) Acetabularia used in Hammerling’s
nucleocytoplasmic experiments is a

a) Unicellular fungus
b) Multicellular fungus
c) Unicellular uninucleate green algae
d) Unicellular multinucleate green algae

68) A water- soluble pigment present in the cell vacuole is
a) Anthocyanin
b) Carotene
c) Xanthophyll
d) Chlorophyll

69) Cilia and flagella possess a
a) Similar size but dissimilar structure
b) Similar structure but dissimilar size
c) Similar size and structure
d) Dissimilar size and structure

70) Which one is common amongst nucleus, chloroplast and mitochondria?
a) Cristae
b) Thylakoids
c) Nucleic acid
d) Carbohydrate metabolism

71) Correct the sentence- chloroplasts and mitochondria are concerned
with the transfer of cellular energy.

a) Mitochondria are but not chloroplasts
b) Chloroplasts are but not mitochondria
c) Both
d) Neither of them

72) The smallest cell organelles are
a) Lysosomes
b) Sphaerosomes
c) Peroxisomes
d) Ribosomes

73) Experiments on Acetabularia by Hammerling proved the role of
a) The cytoplasm in controlling differentiation
b) The nucleus in heredity
c) The chromosomes in heredity
d) The nucleo : cytoplasmic ratio

74) In plant cells, peroxisomes are associated with
a) Photorespiration
b) Phototropism
c) Photoperiodism
d) Photosynthesis

75) The Golgi complex is derived from the
a) Cell membrane
b) E.R.
c) Nuclear envelope
d) Cytoplasm

76) The protein tubulin is absent in
a) Flagella
b) Cilia
c) Microtubules
d) The plasma membrane

77) Mitochondrial cristae are sites of
a) Breakdown of macromolecules
b) Protein synthesis
c) Phosphorylation of flavoproteins
d) Oxidation – reduction reactions

78) The organelle having flattened membrane bound cisternae and lying
near the nucleus is the

a) Golgi apparatus
b) Mitochondrion
c) Centriole
d) Nucleolus

79) Centrioles occur in
a) Centrosomes
b) Centromeres
c) Chromosomes
d) Spindle fibres

80) Besides giving out vesicles, the Golgi apparatus is connected with
the formation of the

a) Grana
b) Cell plate
c) Lysosomes
d) Plastids

81) The rigidity of the cell wall is due to
a) Cellulose
b) Pectin
c) Lignin
d) Suberin

82) The colour of rose petals is due to the presence of water soluble pigment contained
in the

a) Cytoplasm
b) Intercellular speces
c) Nucleus
d) Vacuoles

83) The E.R. of rapidly dividing cells is
a) Non-functional
b) Poorly developed
c) Absent
d) Highly developed

84) The smallest unit of the cell wall is a
a) Fibril
b) Middle lamella
c) Microfibril
d) Micelle

85) The term protoplasm was first proposed by
a) Robert Hooke
b) A.K. Sharma
c) Dujardin
d) Purkinje

86) Which is the major organic constituent of protoplasm?
a) Carbohydrates
b) Protein
c) Nucleic acid
d) Water

87) The compound present in the largest quantity in an active protoplasm is
a) Glucose
b) Fat
c) Protein
d) Water

88) Which of the following is the chief organic substance present in cytoplasm?
a) Protein
b) Sugar
c) Water
d) Lipid

89) The cells of the aleurone sheath of monocot seeds contain abundance of
a) Starch
b) Protein
c) Essential oil
d) Mineral crystals

90) The pH of cytoplasm is
a) Acidic
b) Alkaline
c) Slightly acidic
d) Strongly basic

91) Who defined protoplasm as the physical basis of life?
a) T. Huxley
b) Watson
c) Dujardin
d) Schwann

92) The cell theory states that
a) Cells reproduce by mitosis and meiosis
b) Cells are the fundamental structural unit of plants and animals
c) All cells have nuclei
d) All cells are living

93) The branch which deals with the study of cell structure is known as
a) Histology
b) Ecology
c) Morphology
d) Cytology

94) The main difference between animal and plant cells is that
a) Plant cells lack a rigid cell wall
b) Animal cells lack a rigid cell wall
c) Plant cells possess a small vacuole
d) Animal cell possess a large vacuole

95) The cell theory was propounded by
a) Schleiden and Schwann
b) Robert Hooke
c) Robert Koch
d) Darwin

96) Which of the following is an exception to the cell theory?
a) Fungi
b) Bacteria
c) Virus
d) PPLO or mycoplasma

97) Who applied the cell theory to plants?
a) Jenssen
b) Schleiden
c) Schwann
d) Swanson

98) The term cell was coined by
a) Robert Hooke
b) Robert Brown
c) Flemming
d) Leeuwenhoek

99) Membranes are mostly formed by
a) Fats and carbohydrates
b) Carbohydrates and nucleic acid
c) Proteins and nucleic acids
d) Proteins and fats

100) Plasmalemma is another term for
a) Microfibrils
b) Cell wall
c) Plasma membrane
d) Middle lamella

Answers

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