1. The "Cell Theory" was proposed by
(A) Robert Hooke & Leeuwenhock
(B) Grew and Malpighi
(C) Schleiden & Schwann
(D) Dutrochet & Brown
1. Which one of the following is called the energy currency of the cell?.
(A) NAD
(B) FAD
(C) ATP
(D) FMN
3. The cells of cork were first studied in 1665 by
(A) Robert Brown
(B) Robert Hooke
(C) Dutrochet
(D) Schleiden
4. Cork cells were examined under his own microscope by
(A) De Duve
(B) Galileo
(C) Robert Hooke
(D) Dutrochet
5. Robert Brown was the person who
(A) Isolated lysosomes
(B) Discovered nucleus
(C) Observed cell wall
(D) Proposed cell theory
6. The symbol "S" (Svedberg) unit is more related to
(A) Solubility
(B) Sedimentation
(C) Discoverer
(D) Solid
7. The idea that cell is a structure containing nucleus with its
surrounding fluid and an outer thin membrane was put forth by
(A) Robert Hooke
(B) Theodore Schwann
(C) Robert Brown
(D) Galileo
8. French Botanist Henri Dutrochet used which chemical to study cells in
his experiment?
(A) Citric acid
(B) Acetic acid
(C) Nitric acid
(D) Succinic acid
9. The fluid-mosaic cell model of the cell membrane depicts it as
(A) a bilayer of lipid between two layers of proteins
(B) a bilayer of lipid with integral and peripheral proteins
(C) a bilayer of protein between two layers of lipid
(D) alternating layers of protein and lipid (jelly roll)
10. If a cell is viewed by microscope under low power and then under high
power, and no fine adjustment is necessary to see it clearly, the microscope is
considered
(A) Achromatic
(B) Bifocal
(C) Parfocal
(D) Unifocal
11. The internal structure of a eukaryotic cilium or the flagellum, no
matter what the organism, has the same fibrillar arrangement, consisting
of pairs of tubules.
(A) 7 outer and 2 inner
(B) 9 outer and 2 inner
(C) I 1 outer and 2 inner
(D) 9 outer and I inner
12. The smallest unit possessing the capability to maintain life and to
reproduce is
(A) an organ
(B) a cell
(C) DNA
(D) RNA
13. The various components of the cells including their organelles can be
isolated by the process of cell
(A) Centrifugation
(B) Fractionation
(C) Homogenation
(D) Fragmentation
14. The various organelitles of.;cell can be separated by a process called
(A) Centrifugation
(B) Distillation
(C) Filtration
(D) Chromatography
15. Which of these factors affect the movement of substances throUgh the
piashia membrane?
(A) Size of diffusing particles
(B) Permeabilityofthe membrane
(C) Membrane proteins
(D) All of the above
16. The cell membrane is composed of
(A) Glycoproteins
(B) Phosphoproteins
(C) Phospholipid & protein
(D) Proteins only
17. Cellulose is present in 1
(A) Cell wall
(C)Lysosome
(B) Ribosome
(D) Chromosomes
18., The diffusion of a dissolved substance through a differentially
permeable membrane is
(A) Dialysis
(B) Osmosis
(C) Imbibition
(D) Brownian movement
19. Resides a small quantity of carbohydrate, the cell membrahe is
chemically co posed of lipids and
(A) Chitin
(B) Proteins
(C) Cellulose
(D) Cutin
20. The substances which-ean easily pass through the cell membrane must be
soluble in
(A) Lipid
(B) Water
(C) Alcohol
(D) Acetone
21. The shape and rigidity of a plant cell depends upon its
(A) Cell wall
(B) Cell membrane
(C) Cytoplasm
(D) Endoplasmic reticulum
22. "It is outermost layer of the animal cell. It is thin, delicate,
elastic and capable of limited self repair." The statement is true for
(A) Cell wall
(13) Cell membrane
(C) Nuclear membrane
(D)Middle lamella
23. Cell membrane allows some of the soluble particles to pass through but
prevents others. This property is most appropriate to the membrane, which is
(A) Impermeable
(B) Permeable
(C) Selectively permeable
(D) None of these
24. First formed wall between the adjacent cells is
(A) Primary cell wall
(B) Secondary cell wall
(C) Middle lamella
(D) Cytosol
25. The plasma membrane does not allow free passage of
(A) Sugar molecules
(B) Water molecules
(C) Ions
(D) Lipids soluble substances
26. Which one of the following surrounds an animal cell?
(A) Cell wall
(B) Plasma membrane
(C) Skin
(D) Jelly
27. Which one of the following is the only way in which plant cells differ
from animal cells?
(A) Plant cells all possess chlorophyll.
(B) Plant cells have a cellulose cell wall.
(C)-Plant cells are larger.
(D) Plant cells are not as specialised.
28. Of the following, which is not considered a membranous organelle?
(A) Ribosome
(B) Endoplasmic reticulum
(C) Golgi body
(D) Mitochondrion
29. Rough endoplasmic reticulum is mainly concerned with
(A) Proteolysis
(B) Fatty acid synthesis
(C) Protein synthesis
(D) Cholesterol synthesis
30. The soluble part of the cytoplasm contains about 90% water and is known
as the
(A) Cystol
(B) Cytosol
(C) Lysosome
(D) Lysosole
31. Which one of the following performs the important role of intracellular
transport?
(A) hndoplasmic reticulum
(B) Lysosome .
(C) Mitochondria
(D) Golgi complex
32. The site of the dark reaction of photogynthesis is
(A) Lysosome
(B) Mitochondria
(C) Cytoplasm
(D) Nucleus
33. The aqueous ground substance in the cell contains a variety of cell
organelles, wastes and storage products. It is mostly true for
(A) Nucleus
(B) Cytoplasm
(C) Plasma membrane
(D) Endoplasmic reticulum
34. Glycolysis is an important metabolic process and occurs in
(A) Mitochondria
(B) Cristae
(C) Cell-membrane
(D) Cytoplasm
35. Cellular organelles containing hydrolytic enzymes are called
(A) Lysosome
(B) Microsomes
(C) Ribosomes
(D) Mesosomes
36. Protein synthesis is dependent on
(A) Centerosome
(C) Ribosome
(B) Lysosome
(D) Plastids
37. In plants the Golgi apparatus is also referred to as
(A) Polysome
(C) Lysosome
(B) Dictysome
(D) Ribosome
38. Lysosomes contain such proteolytic enzymes which can digest
phagocytosed food particles
(A) Lipids
(C) Proteins
(B) Starches
(D) Sugars
39. A structure formed by the attachment of many ribosomes with the same
stretch of messenger RNA is termed as
(A) Polysome
(B) Dictysome
(C) Chromosome
(D) Lysosome
40. Which of the following functions as the site of protein synthesis?
(A) Ribosome
(B) Dictysome
(C) Chromosome
(D) Lysosome
41. Single membrane bounded organelle is
(A) Lysosomes
(B) Nucleus
(C) Chloroplast
(D) Mitochondrion
42. Ribosomes are composed of an equal amount of protein and
(A) DNA
(B) RNA
(C) Lipids
(D) Carbohydrates
43. Which of the following is not membranous organelle?
(A) Ribosomes
(B) Mitochondria
(C) Endoplasmic reticulum
(D) Lysosomes
44. Which one of the following detoxifies the harmful effect of drugs in
the cell?
(A) Golgi apparatus
(B) Rough endoplasmic reticulum
(C) Smooth endoplasmic reticulum
(D) Mitochondria
45. Cell secretions are processed
and packed in
(A) Endoplasmic reticulum
(B) Golgi apparatus
(C) Mitochondria
(D) Centriole
46. Ribosomal RNA (rRNA) is synthesized in
(A) Nucleolus
(B) Nucleus
(C) Golgi apparatus
(D) Endoplasmic reticul 'm
47. Golgi apparatus in plants is also called
(A) Lysosome
(B) Ribosome
(C) Dictyosome
(D) Mesosome
48. In which one of the following is protein manufactured?
(A) Ribosome
(B) Mitochondrion
(C) Nucleolus
(D) Chromosome
49. Cellular"digestive" or "suicide" packages is a
common description for
(A) Mitochondria
(B) Golgi zones or Golgi bodies
(C) Lysosomes
(D) Centrosomes
50. Which type of cell would probably be most appropriate to study
lysosomes?
(A) Phagocytic white blood cells
(B) Nerve cell
(C) Mesophyll cell of leaf
(D) Muscle cell
51. Which of the following statements about ribosomes is correct?
(A) They are structurally different from free ribosomes.
(B) They are enclosed in their own membrane.
(C) They are concentrated in the cisternal space of rough ER.
(D) They are attached to cisternal surface.
52. Which of the following is called
the "Power house" of the cell?
(A) Nucleus
(B) Mitochondria
(C) Chloroplast
(D) Nucleolus
53. Cristae occur in
(A) Mitochondria
(B) Chloroplast
(C) Lysosomes
(D) Spherosomes
54. Each mitochondria is bounded v a double membrane of which
(A) The outer is folded into finger like folds and the inner is smooth
(B) The outer is smooth and the in. er is folded into finger like folds
(C) Both are smooth
(D) Both have folds
55. The inner matrix that bathes the cristae of mitochondria contains
(A) DNA and nucleoplasm
(B) Ribosomes and mRNA
(C) DNA, ribosomes and enzymes
(D) RNA and enzymes
56. Cristae are the membranous infolding in
(A) Plastids
(B) Golgi apparatus
(C) Lysosomes
(D) Mito .hondria
57. In a fern cell a typical mitochondrion is bounded by
(A) One membrane
(B) Two membrane
(C) Three membrane
(D) Four membrane
58 Mitochondrion is an organelle bounded by a double membrane. Which
statement is true for its membranes?
(A) Inner is smooth
(B) Outer is smooth
(C) Both inner and outer are smooth
(D) No ie -if these
59. The cross section of each centriole indicates that it consists of
(A) 21 microtubules
(B) 23 microtubules
(C) 25 microtubules
(D) 27 microtubules
60. Centrioles in higher plants are
(A) Small
(B) Two in number
(C) Large
(D) Absent
61. Which one of the following contains most adenosine triphosphate (ATP)?
(A) Ribosome
(B) Mitochondrion
(C) Nucleolus
(D) Chromosome
62. Which one of the following cells has the most mitochondria?
(A) Sperm cell
(B) Muscle cell
(C) Neuron
(D) Liver cell
63. Which one of the following is present in the vacuole of a plant cell?
(A) Cytoplasm
(B) Endoplasm
(C) Protoplasm
(D) Cell sap
64. The function of mitochondria in a cell is to
(A) release energy
(B) contain chromosomes
(C) produce proteins
(D) contain genes
65. Which of the following cell organelles or structures produces chemical
energy via the electron transport chain?
(A) Mitochondria
(B) Rough endoplasmic reticulum (rER)
(C) Smooth endoplasmic reticulum (sER)
(D) Peroxisomes
66. Which of the following is highly developed in a cell that is
metabolically very active and has a high energy (ATP) requirement?
(A) Lysosomes
(B) Rough endoplasmic reticulum
(C) Golgi apparatus
(D) Mitochondria
67. Which of the following organelles is specialized in photosynthesis?
(A) Chloroplast
(B) Chromoplast
(C) Leucoplast
(D) Mitochondria
68. A heap of membranes in the inner part of the chloroplast of a green
cell is called a
(A) Crista
(B) Granum
(C) Murein
(D) Golgi Complex
69. The grana is the site where
(A) Oxygen is stored
(B) Food is stored
(C) Sunlight is trapped
(D) CO2 is stored
70. Membrane bounded pigment containing bodies present in the plant cell
are
(A) Centrioles
(B) Plastids
(C) Dictysomes
(D) Lysosomes
71. Which statement about plastids is true?
(A) They are surrounded by a single membrane.
(B) They are the powerhouse of cell.
(C) They are found in all organisms.
(D) They contain DNA and ribosomes.
(D) Golgi complex
72. In 1831, nucleus was first observed in the cells of orchids under the
microscope by
(A) Robert Hooke
(C) Robert Brown
(B) Schwann
(D) Dutrochet
73. The nucleus in the animal cell was first of all seen by
(A) Schleidens
(B) Schwann
(C) Schultz
(D) Robert Brown
74. Nucleus is composed largely of
(A) rRNA
(B) Amino acid and tRNA
(C) RNA and DNA
(D) mRNA and tRNA
75. In plant cells the nucleus lies close to the cell-membrane due to the
presence of
(A) Large size of nucleus
(B) Large central vacuole
(C) Concentrated cytoplasm
(D) Large endoplasmic reticulum
76. In mammalian cell the term protoplasm is applied for
(A) Nucleus and nucleolus
(B) Ribosome and nucleolus
(C) Nucleus and cytoplasm
(D) Cell membrane and cytoplasm
77. Which one of the following cells has no nucleus?
(A) Ovum
(B) White blood cell
(C) Sperm
(D) Red blood cell
78. Which statement about the nuclear envelope is not true?
(A) It has pores.
(B) It is a double membrane structure.
(C) Its inner membrane bears ribosomes.
(D) RNA and some proteins pass through it.
79. Chromosome is made of
(A) Polypeptides
(B) Lipoprotein
(C) Phospholipid
(D) Nucleoprotein
80. The chromosomes are composed of DNA and
(A) RNA
(B) Genes
(C) Proteins
(D) Lipids
81. Number of chromosomes in potato is
(A) 47
(B) 49
(C) 46
(D) 48
82. Which of the following is not a- membrane bound structure?
(A) Endoplasmic reticulum
(B) Chromosome
(C) Lysosome
(D) Mitochondrion
83. Which one of the following is the part of the cell that controls a single
inherited factor?
(A) Gene
(B) Chromosome
(C) Gamete
(D) Nucleus
84. Which of the following pairs of structure-function is mismatched?
(A) Ribosomes; protein synthesis
(B) Nucleolus; ribosome production
(C) Golgi; muscle contraction
(D) Lysosome; intracellular digestion
85. The entire cell wall of the prokaryotic cell is often regarded as a
single huge molecule known as
(A) Cellulose
(C) Nucleoprotein
(B) Murein
(D) Lipoprotein
86. In Eukaryotic cell, the Kreb's cycle is completed in tiny structures
called
(A) Mitochondria
(B) Lysosome
(C) Fndoplasmic reticulum
(D) Chromosome
87. Normal size of Prokaryotic ribosome is
(A) 90S
(B) 70S
(C) 80S
(D) 60S
88. The 80S particles of Eukaryotic ribosomes are formed by
(A) 50S and 705
(B) 30S and 50S
(C) 20S and 40S
(D) 40S and 60S
89. The cell-wall of prokaryotic cell is made up of
(A) Cellulose
(B) Maltose
(C) Murein
(D) Lactic acid
90. Ali of the following are characteristic of prokaryotic cells EXCEPT:
(A) Cell wall complex
(B) Plasma membrane
(C) Nuclear area
(D) Rough endoplasmic reticulum
91. Eukaryotes may contain
(A) a Golgi complex
(B) an endoplasmic reticulum
(C) chloroplasts
(D) All of these
92. The movement of material against
concentration gradient through cell membrane occurs by which one of the
following process?
(A) Cohesion
(C) Evaporation
(B) Passive transport
(D) Active transport
93. The impulses are transmitted from one part of the body to the other by
means of
(A) Muscle cells
(B) Nerve cells
(C) Gland cells
(D) Skin cells
94. Which of the following are specialized to contract and relax?
(A) Gland-cells
(B) Red-black-cells
(C) Muscle-cells
(D) Nerve-cells
95. Food in plants is transported by
(A) Phloem
(B) Parenchyma
(C) ScIerenchyma
(D) Xylem
96. Unlike facilitated diffusion, active transport is
(A) sensitive to the concentration
of the component on only one side of the membrane (the loading side)
(B) insensitive to the concentration
of the component on the other side of the membrane
(C) known to saturate at relatively low component concentration
(D) All of the above
97. Galileo devised microscope in
(A) 1600 AD
(B) 1610 AD
(C) 1665 AD
(D) 1670 AD
98. Robert Brown saw the cell nucleus in 1831 in the
(A) Rat
(B) Rose
(C) Orchids
(D) Euglena
99. In plants surplus of food is stored in the cells called
(A) Sclerenchymatous
(B) Parenchymatous
(C) Chlorenchymatous
(D) Mesenchymatous
100. The primary cell wall of plants
is composed of cellulose along with some deposition of pectin and (A) Cutin
(B) Suberin
(C) Lignin
(D) Silica
101. To the rough form of the endoplasmic reticulum are found attached the
(A) Polysomes
(B) Lysosomes
(C) Ribosomes
(D) Ergosomes
102. The cells of some lower plants
contain
(A) Large vacuoles
(C) Centrioles
(B) Aster
(D) Lysosomes
103 The animal cells which exhibit phagocytic activity possess abundant
(A) Polysomes
(B) Lysosomes
(C) Ribosomes
(D) Ergosomes
104 In living cells ribosomes help in synthesizing
(A) Proteins
(B) Carbohydrates
(C) Fats.
(D) Acids
105 Antophagy is the process of destruction of superfluous, faulty or aging
cell organelles with the help of digestive enzymes of
(A) Mitochondria
(B) Lysosomes
(C) Ribosomes
(D) Chromosomes
106 The leucoplasts are the plastids which are
(A) Red
(B) Yellow
(C) Colourless
(D) Orange
107 The normal number of chromosomes in the frog cells is
(A) 16
(B) 26
(C) 14
(D) 20
108 The entire cell wall of the proparyotic cell is often regarded as a
single huge molecule known as
(A) Cellulose
(B) Murein
(C) Nucleoprotein
(D) Lipoprotein
109 The spiral structure in spirogyra is the
(A) Spireme
(B) Chloroplast
(C) Chromatin
(D) Nucleus
110• The only one of the structures found in a spirogyra is
(A) a flagellum
(B) on eyespot
(C) a pyrenoid
(D) cilia .
111. ATP is a chemical that is essential for
(A) digestion
(B) appetite
(C) absorption
(D) oxidation
112. Enzymes are useful
(A) only during digestion
(B) only in respiration
(C) in both digestion and
respiration
(D) only during ingestion
113. All of the following are
organelles except the
(A) Endoplasmic reticulum
(B) Mitochondria
(C) Ribosome
(D) Ultracentrifuge
114. The life activity concerned
with taking in of food is known as
(A) ingestion
(B) digestion
(C) secretion
(D) excretion
115. The life activity dealing with the stability of the organism's
chemical makeup under its constantly changing environment is
(A) respiration
(B) irritability
(C) reproduction
(D) regulation
116. DNA is found in the cell's
(A) vacuole
(B) nucleolus
(C) nucleus
(D) ribosomes
117. All of the following have
recently given us greater knowledge about the cell except
(A) the electron microscope
(B) the phase microscope
(C) laser beams
(D) the single-lens microscope
118. All of the following scientists studied cells except
(A) Hooke
(B) Van Leeuwenheok
(C) Schwann
(D) Linnaeus
119. The nucleus contains all of the following structures except
(A) mitochondria
(B) chromatin
(C) genes
(D) nucleolus
120. The most abundant substance in protoplasm is
(A) protein
(B) fat
(C) water
(D) minerals
121. The conversion of non-living material into living protoplasm is known
as
(A) assimilation
(B) respiration
(C) reproduction
(D) digestion
122. A cell obtains energy during the process of
(A) ingestion
(B) respiration
(C) irritability
(D) excretion
123. Viruses resemble living things because they
(A) circulate
(B) move
(C) reproduce
(D) are crystalline
124. Animal cells do not possess
(A) a cell membrane
(B) a cell wall
(C) cytoplasm
(D) a nucleus
125. An amoeba moves by means of
(A) cilia
(B) pseudopods
(C) pseudonyms
(D) flagella
126. Both the amoeba and the
paramecium possess a (an)
(A) contractile vacuole
(B) anal spot
(C) oral groove
(D) trichocysts
127. Digestion in one-celled animals takes place in the
(A) cyst
(B) contractile vacuole
(C) food vacuole
(D) pellicle
128. Paramecium may reproduce by
(A) binary fission only
(B) conjugation only
(C) both binary fission and
conjugation
(D) budding only
129. Dissolved gases pass in and out of paramecium through the
(A) nuclear membrane
(B) cell membrane
(C) food vacuole
(D) micronucleus
130. Plant and animal cells are alike in possessing
(A) chlorophyll
(B) ehloroplast
(C) cell wall (D) cell membrane
131. The euglena is different from
the ameba and paramecium in possessing (A) cytoplasm
(B) a nucleus
(C) a cell membrane
(D) chloroplasts
ANSWERS
1. C 2. C 3. B 4. C 5. B 6. B 7. B 8. C 9. B 10. C 11. B 12. B 13. B. 14. A
15. D 16. C 17. A 18. B 19. B 20. A 21. A 22. B 23. C 24. C 25. C 26. B 27. B
28. A 29. C 30. B 31. A 32. C 33. B 34. D 35. A 36. C 37. B 38. C 39. A 40. A
41. A 42. B 43. A 44. A 45. B 46. A 47. C 48. A
Online MCQS Preparation (MCAT Biology Book-1) Chapter No.4
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