1) S.E.R. takes part in the synthesis of
a) Lipids and steroids
b) Vitamins
c) Carbohydrates
d) All the above

2) R.E.R. is specialised for synthesis of
a) Local proteins
b) Local proenzymes
c) Proteins and proenzymes for transport
d) Hormones

3) Which of the following provides mechanical support to the cell?
a) Ribosomes
b) Golgi bodies
c) Lysosomes
d) Endoplasmic reticulum

4) Besides proteins, ribosomes contain
a) DNA
b) RNA
c) Both DNA and RNA
d) Lipids

5) A ribosome is composed of
a) A single unit
b) Two subunits
c) Three subunits
d) Four subunits

6) A polysome is a chain of
a) Oxysomes
b) Sphaerosomes
c) Ribosomes
d) Dictyosomes

7) The enzyme peptidyl transferase occurs in the
a) Larger subunit of a ribosome
b) Smaller subunit of a ribosome
c) Endoplasmic reticulum
d) Lysosomes

8) Palade granules are
a) Glycoprotein particles
b) Pigment granules
c) Excretory vesicles
d) Ribosomes

9) Procaryotic ribosomes are generally
a) 80 S
b) 100 S
c) 70 S
d) 45 S

10) Eucaryotes possess ribosomes
a) 60 S
b) 70 S
c) 80 S
d) Both B and C

11) An organelle devoid of membrane covering is
a) Lysosome
b) Peroxisome
c) Ribosome
d) Sap vacuole

12) The rRNA : protein ratio of the 80 S ribosome is
a) 40 – 44 : 56 – 60
b) 45 – 50 : 50 – 55
c) 50 – 55 : 45 – 50
d) 60 – 65 : 35 – 40

13) The rRNA present in the 40 S subunit of a ribosome is
a) 5 S
b) 5.8 S
c) 16 S
d) 18 S

14) The rRNA present in the 50 S subunit of a ribosome is
a) 23 S
b) 5 S
c) Both A and B
d) 23 S, 5.8 S and 5 S

15) The most abundant organelles of the cell are
a) Mitochondria
b) Plastids
c) Ribosomes
d) Microbodies

16) The Golgi apparatus is made up of
a) Cisternae
b) Tubules and vesicles
c) Golgian vacuoles
d) All the above

17) The number of cisternae present in one stack of the Golgi apparatus of an animal cell is
a) 4 – 8
b) 8 – 13
c) 13 – 20
d) 20 – 30

18) The Golgi complex is not found in
a) Nerve cells
b) RBCs
c) Germ cells
d) All the above

19) Amongst plants, the Golgi apparatus is absent in
a) Mature sieve tube cells
b) Sperms of bryophytes
c) Sperms of pteridophytes
d) All the above

20) The Golgi apparatus takes part in the synthesis of
a) Carbohydrates
b) Glycoproteins
c) Hormones
d) All the above

21) Lysosomes originate from the
a) Plasmalemma
b) Golgi apparatus
c) Both A and B
d) R.E.R

22) The main function of lysosomes is
a) Secretion
b) Respiration
c) Extracellular digestion
d) Intracellular digestion

23) Lysosomes are absent in which of the following animal cells?
a) Erythrocytes
b) Plasma cells
c) Nerve cells
d) Muscle cells

24) Lysosomes containing inactive enzymes are called
a) Primary lysosomes
b) Secondary lysosomes
c) Autophagosomes
d) Residual bodies

25) The cell organelle which takes up the redox dye Janus Green is the
a) Lysosome
b) Mitochondrion
c) Ribosome
d) Golgi apparatus

26) A eucaryotic aerobic cell that does not possess mitochondria is
a) Liver cell
b) Kidney cell
c) Erythrocyte
d) Leucocyte

27) The number of mitochondria present in a sperm is
a) 4 – 6
b) 12 – 14
c) 20 – 24
d) 40 – 50

28) A liver cell contains mitochondria
a) 500 – 1500
b) 1000 – 1200
c) 1500 – 2000
d) 2000 – 4000

29) The powerhouses of the cell are
a) ATP
b) Lysosomes
c) Mitochondria
d) Chloroplasts

30) The mitochondrial matrix contains
a) Enzymes
b) DNA and RNA
c) Ribosomes
d) All the above

31) The small particles attached to the inner mitochondrial membrane are
a) Ergosomes
b) Cristae
c) Elementary particles
d) Quantasomes

32) Mitochondria are concerned with
a) Oxidative phosphorylation
b) Intermediate metabolism
c) Krebs cycle
d) All the above

33) Mitochondria are semi-autonomous due to the
a) Presence of functional naked DNA
b) Presence of ribosomes
c) Ability to divide
d) All the above

34) Pigment free plastids are
a) Chloroplasts
b) Chromoplasts
c) Lysosomes
d) Leucoplasts

35) All types of plastids are formed from
a) Proplastids
b) Leucoplasts
c) Amyloplasts
d) Aleuroplasts

36) Chromoplasts are formed from chloroplasts during the
a) Ripening of Tomato
b) Ripening of Chilli
c) Development of Carrot
d) All the above

37) Chromoplasts are formed from leucoplasts in
a) Rose petals
b) Carrot
c) Dahlia florets
d) All the above

38) The plastids with a variable shape are
a) Leucoplasts
b) Chloroplasts
c) Chromoplasts
d) Amyloplasts

39) Leucoplasts are present in
a) Green cells
b) Pigmented cells other than green
c) Nonpigmented cells
d) Both A and B

40) The organelle covered by a duble membrane is the
a) Nucleus
b) Mitochondrion
c) Plastid
d) All the above

41) Plastids contain
a) a double membrane covering
b) DNA, RNA and ribosomes
c) Lamellae
d) All the above

42) Starch is stored in
a) Chromoplasts
b) Amyloplasts
c) Chloroplasts
d) Both B and C

43) Plastids storing proteins are called
a) Elaioplasts
b) Oleosomes
c) Aleuroplasts
d) Phaeoplasts

44) Plastids storing fat are called
a) Elaioplasts
b) Sphaerosomes
c) Adipocytes
d) Pyrenoids

45) In a chloroplast, the photosynthetic pigments occur in the
a) Matrix
b) Grana
c) Membranes of thylakoids
d) Loculi and fret channels of thylakoids

46) Grana are present in
a) Mitochondria
b) Chloroplasts
c) Golgi bodies
d) Ribosomes

47) Grana are
a) Protein storing plastids
b) Coloured plastids
c) Stacks of thylakoids
d) Individual thylakoids present in stroma

48) The number of grana present in a chloroplast is
a) 10 – 20
b) 20 – 30
c) 30 – 40
d) 40 – 60

49) The number of thylakoids in a granum is
a) 1 – 100
b) 5 – 10
c) 100 – 200
d) 200 – 500

50) The plastids which provide bright colours to the flowers and fruits are
a) Chloroplasts
b) Leucoplasts
c) Chromoplasts
d) Proplastids

51) An organelle covered by a single membrane is a
a) Sphaerosome
b) Peroxisome
c) Glyoxisome
d) All the above

52) A microbody present only in plants is the
a) Sphaerosome
b) Peroxisome
c) Glyoxisome
d) Both B and C

53) Microbodies differ from mitochondria in the
a) Single membrane
b) Absence of DNA
c) Direct oxidation
d) All the above

54) New spherosomes develop from
a) Old sphaerosomes
b) E.R.
c) Golgi apparatus
d) Prospherosomes

55) An organelle reported to have lysosomal activity in plants is the
a) Sphaerosome
b) Glyoxisome
c) Peroxisome
d) All the above

56) Microbodies possess
a) Hydrolases
b) Oxidases
c) Isomerases
d) All the above

57) The enzyme catalase occurs in
a) Lysosomes
b) Sphaerosomes
c) Peroxisomes
d) Peroxisomes and glyoxysomes

58) The peroxisome was discovered by
a) De Duve
b) Rhodin
c) De Robertis and Franchi
d) Beevers

59) Glyoxisomes occur in
a) Leaf cells
b) Fatty seeds
c) Roots
d) Meristematic cells

60) Glyoxisomes are useful in
a) Converting sugars to fats
b) Converting fats to sugars
c) Deamination and converting amino acids to fatty acids
d) Amination and changing fatty acids to amino acids

61) A microtubule has a diameter of
a)
b)
c)
d) 100 nm

62) A microtubule is made up of
a) Protofilaments
b) Microfilaments
c) Microfibrils
d) Elementary fibrils

63) The number of protofilaments in a microtubule is
a) 10 – 15
b) 11-13
c) 16 – 20
d) 18 -20

64) Microtubules are formed of a protein called
a) Tubulin
b) Actin
c) Flagellin
d) Myosin

65) Microtubules are present in
a) Bacteria
b) Viruses
c) Eucaryotic cells
d) Mycoplasma

66) The diameter of a microfilament is
a) 5 – 7 nm
b) 10 nm
c) 15 nm
d) 25 nm

67) Centrioles are commonly found in
a) Singly
b) Pairs
c) Triplets
d) Quadruplets

68) The pattern of organisation in centrioles is
a) 9 + 2
b) 9 + 3
c) 9 + 0
d) 9 + 1

69) Subfibres of cilia and flagella are made of
a) Tubulin
b) Elastin
c) Myosin
d) Actin

70) The pattern of organisation of eucaryotic cilia and flagella is
a) 9 + 0
b) 9 + 1
c) 9 + 2
d) 9 + 3

71) The hydroplasm of a vacuole possesses
a) Water
b) Minerals
c) Water and minerals
d) Air

72) Gas vacuoles occur in
a) Procaryotes
b) Protozoans
c) Both A and B
d) Fishes

73) A gas vacuole takes part in
a) Storage of metabolic gases
b) Protection from intense radiations
c) Buoyancy regulation
d) Both a and c

74) Vacuoles are
a) Cytoplasmic organelles
b) Noncytoplasmic organelles
c) Noncytoplasmic sacs
d) Cytoplasmic sacs

75) Contractile vacuoles take part in
a) Storage of wastes
b) Osmoregulation
c) Excretion
d) Both B and C

76) A single large central vacuole occurs in
a) Mature animal cells
b) Mature plant cells
c) Developing animal cells
d) Developing plant cells

77) The liquid content of a vacuole is called
a) Cell sap
b) Matrix
c) Nucleoid
d) Core

78) A well organised nucleus is present in
a) Bacteria
b) Procaryotes
c) Blue green algae
d) Eucaryotes

79) A plant cell having many nuclei is known as
a) Syncytial
b) Coenocyte
c) Polynucleate
d) Plasmodium

80) The nuclear envelope is composed of
a) A single membrane
b) Two membranes
c) a proteinaceous strand
d) Both A and C

81) A biological membrane containing true pores is the
a) Nuclear envelope
b) Plasma membrane
c) Vitelline membrane
d) Plastid envelope

82) The perinuclear space has a width of
a)
b)
c)
d) 100 – 150 nm

83) The diameter of the nuclear pores is
a)
b)
c)
d)

84) Nucleoplasm is also called
a) Nuclear sap
b) Karyolymph
c) Both A and B
d) Nuclear matrix

85) Heterochromatin is
a) Very active
b) Genetically and metabolically inert
c) Very active genetically
d) Inert metabolically

86) The nucleolus contains
a) Genetic instructions
b) Ribosome assembly line
c) Protein synthesis machinery
d) Enzymes for polysaccharide formation

87) An organelle having a significant role in mitosis is the
a) Lysosome
b) Mitochondrion
c) Golgi body
d) Nucleolus

88) The nucleolus is formed from the
a) Nucleus
b) Nuclear sap
c) Sat chromosome
d) Giant chromosome

89) The structural element of chromatin is
a) Histone
b) Acid protein and DNA
c) Nucleosome
d) Nuclear matrix

90) The largest organelle of the cell is the
a) Nucleus
b) Chloroplast
c) Mitochondrion
d) Vacuole

91) The term chromatin was coined by
a) Heitz
b) Fleming
c) Fontana
d) Bowman

92) The aleurone layer present in the outer part of the maize grain is rich in
a) Stored protein
b) Stored fat
c) Stored starch
d) All the above

93) Crystalloid and globoid are components of
a) Spherosomes
b) Elaioplasts
c) Aleurone grains
d) Starch grains

94) Asafoetida is a
a) Oleoresin
b) Gum resin
c) Hard resin
d) None of the above

95) The resin obtained from Pinus is a
a) Hard resin
b) Mixture of resin and latex
c) Oleoresin
d) Gum resin

96) An alkaloid used as a drug is
a) Quinine
b) Reserpine
c) Atropine
d) All the above

97) The lysosome is found in the
a) flagellum
b) Nucleus
c) Cytoplasm
d) E.R.

98) A bunch of crystals called cystolith consists of
a) Calcium oxalate
b) Calcium carbonate
c) Calcium carbonate over a cellulose core
d) Calcium oxalate over a cellulose core

99) Which of the following structures is present in mitochondria?
a) Quantasomes
b) Oxysomes
c) Polysomes
d) Dictyosomes

100) The diameter of mitochondria is
a)
b)
c)
d)

Answers