1. Select the mismatch:
(1) Gas vacuoles – Green Bacteria
(2) Large central vacuoles – Animal cells
(3) Protists – Eukaryotes
(4) Methanogens – Prokaryotes
Answer
Ans.(2)
2.A cell organelle containing hydrolytic enzymes is
(1) Lysosome
(2) Microsome
(3) Ribosome
(4) Mesosome
Answer
Ans.(1)
3.Water soluble pigments found in plant cell vacuoles are
(1) Anthocyanin
(2) Xanthophyll
(3) Chlorophyll
(4) Carotenoids
Answer
Ans.(1)
4.Mitochondria and chloroplast are
a) Semi-autonomous organelles
b) Formed by division of the pre-existing organelles and they contain DNA but lack protein synthesizing machinery
Which one of the following options is correct?
(1) Both (a) and (b) are correct
(2) Both (a) and (b) are false
(3) (b) is true but (a) is false
(4) (a) is true but (b) is false
Answer
Ans.(4)
5.Which of the following structures are not found in prokaryotic cells
(1) Plasma membrane
(2) Nuclear envelope
(3) Ribosome
(4) Mesosome
Answer
Ans.(2)
6.Which of the following are not membrane bound organelles
(1) Mesosome
(2) Vacuoles
(3) Ribosome
(4) Lysosome
Answer
Ans.(3)
7.Cellular organelles with membranes are
(1) Lysosome, Golgi apparatus and mitochondria
(2) Nuclei, ribosomes and mitochondria
(3) Chromosomes, ribosomes and ER
(4) ER, ribosomes and Nuclei
Answer
Ans.(1)
8.Match the columns and identify the correct option
Column I Column II
(a) Thylakoids (i) Disc shaped sacs of Golgi apparatus
(b) Cristae (ii) Condensed structure of DNA
(c) Cisternae (iii) Flat membranous sacs in stroma
(d) Chromatin (iv) Infoldings in mitochondria
(1) a(iii), b(iv), c(ii), d(i)
(2) a(iv), b(iii), c(i), d(ii)
(3) a(iii), b(iv), c(i), d(ii)
(4) a(iii), b(1), c(iv), d(ii)
Answer
Ans.(3)
9.Balbiani rings are sites of
(1) RNA and Protein synthesis
(2) Lipid synthesis
(3) Nucleotides synthesis
(4) Polysaccharide synthesis
Answer
Ans.(1)
10.In photosynthesis, the light independent reactions take place at
(1) Stomatal matrix
(2) Thylakoid lumen
(3) Photosystem I
(4) Photosystem II
Answer
Ans.(1)
11.Nuclear envelop is a derivative of
(1) RER
(2) SER
(3) Membrane of Golgi complex
(4) Microtubules
Answer
Ans.(1)
12.Which one of the following is not an inclusion body found in prokaryotes?
(1) Polysome
(2) Phosphate granule
(3) Cyanophycean granule
(4) Glycogen granule
Answer
Ans.(1)
13.The chromosome in which centromere is located close to one end are
(1) Sub-metacentric
(2) Metacentric
(3) Acrocentric
(4) Telocentric
Answer
Ans.(3)
14.A somatic cell that has just completed the S-phase of its cell cycle, as compared to gamete of the same species, has
(1) Four times the number of chromosomes and twice the amount of DNA
(2) Twice the number of chromosomes and twice the amount of DNA
(3) Same number of chromosomes and twice the amount of DNA
(4) Twice the number of chromosomes and 4 times the amount of DNA
Answer
Ans.(4)
15.Which structure performs the function of mitochondria in bacteria
(1) Nucleoid
(2) Ribosomes
(3) Cell wall
(4) Mesosome
Answer
Ans.(4)
16.Match the following and select the correct answer
Column I Column II
a. Centriole (i) Infoldings in mitochondria
b. Chlorophyll (ii) Thylakoids
c. Cristae (iii) Nucleic acids
d. Ribozymes (iv) Basal Bodies, cilia or flagella
(1) a(iv), b(ii), c(i), d(iii)
(2) a(i), b(ii), c(iv), d(iii)
(3) a(i), b(iii), c(ii), d(iv)
(4) a(iv), b(iii), c(i), d(ii)
Answer
Ans.(1)
17.Golgi complex plays a major role
(1) In digesting proteins and carbohydrates
(2) As energy transferring organelle
(3) In post translational modification of proteins and glycosidation of lipids
(4) In trapping the light and transforming it into chemical energy
Answer
Ans.(3)
18.Which one of the following does not differ in E. coli and chlamydomonas
(1) Cell wall
(2) Cell membrane
(3) Ribosomes
(4) Chromosomal organization
Answer
Ans.(2)
19.Select the correct statement from the following regarding cell membrane
(1) Lipids are arranged in a bilayer with polar heads towards the inner part
(2) Fluid mosaic model of cell membrane was proposed by Singer and Nicolson
(3) Na+ and K+ move across the cell membrane by passive transport
(4) Proteins make up 60-70% of the cell membrane
Answer
Ans.(2)
20.What is true about ribosomes
(1) These are found only in eukaryotic cells
(2) These are self-splicing introns of some RNAs
(3) The prokaryotic ribosomes are 80S, where “S” stands for sedimentation coefficient
(4) These are composed of ribonucleic acid and proteins
Answer
Ans.(4)
21.Ribosomal RNA is actively synthesized in
(1) Nucleoplasm
(2) Ribosomes
(3) Lysosomes
(4) Nucleolus
Answer
Ans.(4)
22.Important site for the formation of glycoproteins and glycolipids is
(1) Ribosomes
(2) Vacuoles
(3) Golgi apparatus
(4) Plastids
Answer
Ans.(3)
23.Peptide synthesis inside a cell takes place in
(1) Ribosomes
(2) Chloroplasts
(3) Mitochondria
(4) Chromoplast
Answer
Ans.(1)
24.In eubacteria, a cellular component that resembles eukaryotic cell is
(1) Cell wall
(2) Plasma membrane
(3) Nucleus
(4) Ribosomes
Answer
Ans.(2)
25.In mitochondria protons accumulate in the
(1) Inter membrane space
(2) Matrix
(3) Outer membrane
(4) Inner membrane
Answer
Ans.(1)
26.Which one of the following is not considered as part of endomembrane system
(1) Vacuole
(2) Lysosome
(3) Golgi complex
(4) Peroxisome
Answer
Ans.(4)
27.The main arena of various types activities of a cell is
(1) Nucleus
(2) Plasma membrane
(3) Mitochondria
(4) Cytoplasm
Answer
Ans.(4)
28.The plasma membrane consists of mainly
(1) Proteins embedded in the carbohydrate bilayer
(2) Phospholipids embedded in protein bilayer
(3) Proteins embedded in phospholipid layer
(4) Proteins embedded in a polymer of glucose molecules
Answer
Ans.(3)
29.Which one of the following statements about the particular entity is true?
(1) Centromere if found in animal cells, which produces ester during cell divisions
(2) The gene for producing insulin is present in every body cell
(3) Nucleosome is formed of nucleotides
(4) DNA consists of a core of 8 Histones
Answer
Ans.(2)
30.Plasmodesmata are
(1) Locomotory structures
(2) Membranes connecting the nucleus with plasma lemma
(3) Connections between adjacent cells
(4) Lignified cemented layers between the cells
Answer
Ans.(3)
31.Polysome is formed by
(1) Ribosomes attached to each other in a linear arrangement
(2) Several ribosomes attached to a single mRNA strand
(3) Many ribosomes attached to a strand of ER
(4) A ribosome with several subunits
Answer
Ans.(2)
32.Keeping in view the ‘fluid mosaic model’ for the structure of cell membrane, which one of the following statements is correct w.r.t. the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?
(1) Neither lipids nor proteins can flip-flop
(2) Both lipids and proteins can flip flop
(3) While lipids can rarely flip flop, proteins cannot
(4) While proteins can rarely flip flop, lipids cannot
Answer
Ans.(3)
33. Which one of the following is not a constituent of cell membrane
(1) Phospholipids
(2) Cholesterol
(3) Glycolipids
(4) Proline
Answer
Ans.(4)
34.Select the wrong statement from the following
(1) The chloroplasts are generally much larger than mitochondria
(2) Both chloroplast and mitochondria contain an inner and outer membrane
(3) Both chloroplast and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane
(4) Both chloroplast and mitochondria contain DNA
Answer
Ans.(3)
35.Which one of the following statements regarding mitochondrial membrane is not correct?
(1) The outer membrane is permeable to all kinds of molecules
(2)The enzymes of the electron transfer chain are embedded in the outer membrane
(3) The inner membrane is highly convoluted forming a series of inflodings
(4) The outer membrane resembles a sieve
Answer
Ans.(2)
36.A major breakthrough in the studies of cells came which the development of electron microscope. This is because
(1) The resolution power of the electron microscope is much higher than that of light microscope
(2) The resolving power of the electron microscope is 200-350nm as compared to 0.1-0.2 nm for the light microscope
(3) Electron beam can pass through thick materials whereas light microscopy requires thin sections
(4) 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
Answer
Ans.(1)
37.The term “Glycocalyx” is used for
(1) A layer surrounding the cell wall of bacteria
(2) A layer present between cell wall and membrane of bacteria
(3) Cell wall of bacteria
(4) Bacterial cell genetically engineered to possess N-glycosylated proteins
Answer
Ans.(1)
38.Why is a capsule advantageous to a bacteria?
(1) It allows the bacterium to attach to the surface
(2) To protect bacterium from desiccation
(3) It provides means of locomotion
(4) It allows bacterium to hide from host’s immune system
Answer
Ans.(4)
39.Which one of the following organisms is not an example of eukaryotic cells
(1) Amoeba proteus
(2) Paramoecium caudatium
(3) Escherichia coli
(4) Euglena viridis
Answer
Ans.(3)
40.The main organelle involved in modification and routing of newly synthesized proteins to the destination is
(1) Mitochondria
(2) ER
(3) Lysosome
(4) Chloroplast
Answer
Ans.(2)
41.A student wishes to study the cell structure under a light microscope having 10X eyepieace 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
(1) Yellow
(2) Green
(3) Blue
(4) Red
Answer
Ans.(3)
42.Chlorophyll in chloroplasts is located in
(1) Grana
(2) Pyrenoid
(3) Stroma
(4) Both (1) and (2)
Answer
Ans.(1)
43.Protein synthesis in animal cell occurs
(1) Only on the ribosomes present in cytosol
(2) Only ribosomes present in cytoplasm as well as in mitochondria
(3) Only on ribosomes attached to the nuclear envelope and ER
(4) On ribosomes present in the nucleolus as well as in cytoplasm
Answer
Ans.(2)
44.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 aspects. In this regard, which one of the following statements is incorrect?
(1) Proteins in cell membranes can travel within the lipid bilayer
(2) Proteins can remain confined within certain domains of the membrane
(3) Proteins can also undergo “Flip-flop movements” in lipid bilayer
(4) Many proteins remain completely embedded within the lipid bilayer
Answer
Ans.(3)
45.Which of the following statements regarding cilia is not correct
(1) The organized beating of cilia is controlled by fluxes of Ca+ across the membrane
(2) Cilia are hair-like cellular appendages
(3) Microtubules of cilia are composed of tubule
(4) Cilia contain an outer ring of nine doublet microtubules surrounding two single microtubules
Answer
Ans.(1)
46.In germinating seeds fatty acids are degraded exclusively in
(1) Mitochondria
(2) Proplastids
(3) Glyoxysomes
(4) Peroxisomes
Answer
Ans.(3)
47.The two sub-units of ribosomes remain united ate a critical ion level
(1) Calcium
(2) Copper
(3) Manganese
(4) Magnesium
Answer
Ans.(4)
48.Which one of the following structures is an organelle with an organelle
(1) Ribosome
(2) Peroxisome
(3) ER
(4) Mesosome
Answer
Ans.(1)
49.Which one of the following of the cellular parts is correctly described
(1) Thylakoids – Flattened membranous sacs forming the Grana of Chloroplasts
(2) Centrioles – Sites of active RNA synthesis
(3) Ribosomes – those on chloroplasts are larger (80S) while those in cytoplasm are smaller (70S)
(4) Lysosomes – optimally active at a pH of about 8.5
Answer
Ans.(1)
50.Lamp brush chromosomes are see sin in which typical stage?
(1) Mitotic metaphase
(2) Meiotic prophase
(3) Mitotic anaphase
(4) Mitotic prophase
Answer
Ans.(2)
