CELL: THE UNIT OF LIFE
CELL: THE UNIT OF LIFE QUESTION BANK FOR NEET AND AIIMS. PREVIOUS YEAR QUESTION(AIPMT, NEET), LAST 18 YEARS, QUESTION BOOK FOR MCQ PRACTICE
MCQ:-
Q1) Which of the following components provides sticky character to the bacterial cell? (NEET 2017)
Cell wall
Nuclear membrane
Plasma membrane
Glycocalyx
Answer- Glycocalyx
Q2) Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP? (NEET 2017)
Lysosome
Ribosome
Chloroplast
Mitochondrion
Answer- Mitochondrion
Q3) Water soluble pigments found in plant cell vacuoles are (NEET 2016, PHASE I)
Chlorophylls
Carotenoids
Anthocyanins
Xanthophylls
Answer- Anthocyanins
Q4) Which one of the following cell organelles is enclosed by a single membrane? (NEET 2016,PHASE I)
Chloroplasts
Lysosomes
Nuclei
Mitochondria
Answer- Lysosomes
Q5) Mitochondria & chloroplast are
Semi-autonomous organelles
Formed by division of pre-existing organelles & they contain DNA but lack protein synthesising machinery.
Which of the following options is correct? (NEET 2016, PHASE I)
II is true, but I is false
I is true, but II is false
Both I & II are false
Both I & II are true
Answer- I is true, but II is false
Q6) Microtubules are the constituents of (NEET 2016, PHASE I)
Spindle fibres, centrioles & cilia
Centrioles, spind;e fibres & chromatin
Centrosome, nucleosome & centrioles
Cilia, flagella & peroxisomes
Answer- Spindle fibres, centrioles & cilia
Q7) A cell organelle containing hydrolytic enzyme is (NEET 2016, PHASE II)
Lysosome
Microsome
Ribosome
Mesosome
Answer- Lysosome
Q8) Select the wrong statement ( NEET 2016, PHASE II)
A bacterial cell wall is made up of peptidoglycan
Pili & fimbriae are mainly involved in motility of bacterial cells
Cyanobacteria lack flagellated cells
Mycoplasma is wall-less microorganism
Answer- Pili & fimbriae are mainly involved in motility of bacterial cells
Q9) Select the mismatch. (NEET 2016, PHASE II)
Gas vacuoles – Green bacteria cells
Large central vacuoles – Animal cells
Protists – Eukaryotes
Methanogens – Prokaryotes
Answer- Large central vacuoles – Animal cells
Q10) Which of the following structure is not found in a prokaryotic cell? (CBSE AIPMT 2015)
Nuclear envelope
Ribosome
Mesosome
Plasma membrane
Answer- Nuclear envelope
Q11) Which of the following structures is not found in prokaryotic cells? [ ReAIPMT 2015]
a) Plasma membrane
b) Nuclear envelope
c) Ribosome
d) Mesosome
Answer-Nuclear envelope
Q12) Balbiani rings are sites of (CBSE AIPMT 2015)
Lipid synthesis
Nucleotide synthesis
Polysaccharide synthesis
RNA & protein synthesis
Answer- RNA & protein synthesis
Q13) Which of the following are not membrane bound? (CBSE AIPMT 2015)
Vacuoles
Ribosomes
Lysosomes
Mesosomes
Answer- Ribosomes
Q14) A protoplast is a cell (CBSE AIPMT 2015)
Without plasma membrane
Without nucleus
Undergoing division
Without cell wall
Answer- Without cell wall
Q15) Cellular organelles with membranes are (CBSE AIPMT 2015)
Nuclei, ribosomes & mitochondria
Chromosomes, ribosomes & endoplasmic reticulum
Endoplasmic reticulum, ribosomes & nuclei
Lysosomes, Golgi apparatus & mitochondria
Answer- Lysosomes Golgi apparatus & mitochondria
Q16) The solid linear cytoskeletal elements having a diameter of 6nm & made up of a single type of monomer are known as (CBSE AIPMT 2014)
Microtubules
Microfilaments
Intermediate filaments
Lamins
Answer- Microfilaments
Q17) The osmotic expansion of a cell kept in water is chiefly regulated by (CBSE AIPMT 2014)
Mitochondria
Vacuoles
Plastids
Ribosomes
Answer- Vacuoles
Q19)Which one of the following organelles in the figure correctly matches with its function? (NEET 2013)
Rough endoplasmic reticulum, the formation of glycoproteins
Golgi apparatus, protein synthesis
Golgi apparatus, the formation of glycolipids
Rough endoplasmic reticulum, protein synthesis
Answer- Rough endoplasmic reticulum, protein synthesis
Q20) A major site for synthesis of lipids is (NEET 2013)
RER
SER
Symplast
Nucleoplasm
Answer- SER
Q21) The Golgi complex plays a major role (NEET 2013)
In trapping the light & transforming it into chemical energy
In digesting proteins & carbohydrates
As energy transferring organelles
In post translational modification of proteins & glycosidation of lipids
Answer- In post translational modification of proteins & glycosidation of lipids
Q22) Ribosomal RNA is actively synthesised in (CBSE AIPMT 2012)
Lysosomes
Nucleolus
Nucleoplasm
Ribosomes
Answer- Nucleolus
Q23) What is true about ribosomes? (CBSE AIPMT 2012)
The prokaryotic ribosomes are 80S, where S stands for sedimentation oo coefficient
These are composed of ribonucleic acid & proteins
These are found only in eukaryotic cells
These are self-splicing introns of some RNAs
Answer- These are composed of ribonucleic acid & proteins
Q24) Select the correct statement from the following regarding cell membrane. (CBSE AIPMT 2012)
Na⁺ & K⁺ ions move across cell membrane by passive transport
Proteins make up 60 to 70% of the cell membrane
Lipids are arranged in a bilayer with polar heads towards the inner part
Fluid mosaic model of cell membrane was proposed by Singer & Nicolson
Answer- Fluid mosaic model of cell membrane was proposed by Singer & Nicolson
Q25) Which one of the following organisms is not an example of eukaryotic cells? (CBSE AIPMT 2011)
Escherichia coli
Euglena viridis
Amoeba proteus
Paramecium caudatum
Answer- Escherichia coli
Q26) Important site for formation of glycoproteins & glycolipids is (CBSE AIPMT 2011)
Golgi apparatus
Plastid
Lysosome
Vacuole
Answer- Golgi apparatus
Q27) Which one of the following also acts as a catalyst in a bacterial cell? (CBSE AIPMT 2011)
sn RNA
hn RNA
23S rRNA
5S rRNA
Answer- snRNA
Q28) Peptide synthesis inside a cell takes place in (CBSE AIPMT 2011)
Mitochondria
Chromoplast
Ribosomes
Chloroplast
Answer- Ribosomes
Q29) Which one of the following has its own DNA? (CBSE AIPMT 2010)
Mitochondria
Dictyosome
Lysosome
Peroxisome
Answer- Mitochondria
Q30) The main arena of various types of activities of a cell is (CBSE AIPMT 2010)
Plasma membrane
Mitochondrion
Cytoplasm
Nucleus
Answer- Cytoplasm
Q31) Which one of the following structures between two adjacent cells is an effective transport pathway? (CBSE AIPMT 2010)
Plasmodesmata
Plastoquinones
Endoplasmic reticulum
Plasmalemma
Answer- Plasmodesmata
Q32) The plasma membrane consists mainly of (CBSE AIPMT 2010)
Phospholipids embedded in a protein bilayer
Proteins embedded in a phospholipid bilayer
Proteins embedded in a polymer of glucose molecules
Proteins embedded in a carbohydrate bilayer
Answer- Proteins embedded in a phospholipid bilayer
Q33) Cytoskeleton is made up of? (CBSE AIPMT 2009)
Calcium carbonate granules
Callose deposits
Cellulosic microfibrils
Proteinaceous filaments
Answer- Proteinaceous filaments
Q34) There is no DNA in (CBSE AIPMT 2009)
An enucleated ovum
Mature RBCs
A mature spermatozoan
Hair root
Answer- An enucleated ovum
Q35) Middle lamella is mainly composed of (CBSE AIPMT 2009)
Hemicelluloses
Muramic acid
Calcium pectate
Phosphoglycerides
Answer- Calcium pectate
Q36) Plasmodesmata are (CBSE AIPMT 2009)
Lignified cemented layers between cells
Locomotory structures
Membranes connecting the nucleus with plasmalemma
Connections between adjacent cells
Answer- Connections between adjacent cells
Q37) Keeping in view the ‘fluid mosaic model’ for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids & proteins from one lipid monolayer to the other (described as flip-flop movement) ? (CBSE AIPMT 2008)
Both lipids & proteins can flip-flop
While lipids can rarely flip-flop, proteins cannot
While proteins can flip-flop, lipids cannot
Neither lipids, nor proteins can flip-flop
Answer- While lipids can rarely flip-fop, proteins cannot
Q38) The two sub units of ribosome remain united at a critical ion level of (CBSE AIPMT 2008)
Copper
Manganese
Magnesium
Calcium
Answer- Magnesium
Q39) Vacuole in a plant cell (CBSE AIPMT 2008)
Is membrane-bound & contains storage proteins & lipids
Is membrane-bound & contains water & excretory substances
Lacks membrane & contains air
Lacks membrane & contains water & excretory substances
Answer- Is membrane-bound & contains water & excretory substances
Q40) In germinating seeds, fatty acids are degraded exclusively in the (CBSE AIPMT 2008)
Proplastids
Glyoxysomes
Peroxisomes
Mitochondria
Answer- Glyoxysomes
Q41) Select the wrong statement from the following (CBSE AIPMT 2007)
Both chloroplasts & mitochondria contain an inner & an outer membrane
Both chloroplasts & mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane
Both chloroplasts & mitochondria contain DNA
The chloroplasta are generally much larger than mitochondria
Answer- Both chloroplasts & mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane
Q42) Which of the following statements regarding mitochondrial membrane is not correct (CBSE AIPMT 2006)
The enzymes of the electron transfer chain are embedded in the outer membrane
The inner membrane is highly convoluted forming a series of infoldings
The outer membrane resembles a sieve
The outer membrane is permeable to all kinds of molecules
Answer- The enzymes of the electron transfer chain are embedded in the outer membrane
Q43) A major breakthrough in the studies of cells came with the development of electron microscope. This is because (CBSE AIPMT 2006)
The resolving power of the electron microscope is 200-350nm as compared to 0.1-0.2 for the light microscope
Electron beam can pass through thick materials, whereas light microscopy required thin sections
The electron microscope is more powerful than the light microscope as it uses as a beam of electrons which has wavelength much longer than that of photons
The resolution power of the electron microscope is much higher than that of the light microscope
Answer- The resolution power of the electron microscope is much higher than that of the light microscope.
Q44) The main organelle involved in modification & routing of newly synthesised proteins to their destinations is (CBSE AIPMT 2005)
Chloroplast
Mitochondria
Lysosome
Endoplasmic reticulum
Answer- Endoplasmic reticulum
Q45) According to a widely accepted ‘fluid mosaic model’, cell membranes are semi-fluid, where lipids & integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regards, which of the following statements is incorrect? (CBSE AIPMT 2005)
Proteins in cell membranes can travel within the lipid bilayer
Proteins can also undergo flip-flop movements in the lipid bilayer
Proteins can remain confined within certain domains of the membrane
Many proteins remain completely embedded within the lipid bilayer
Answer- Proteins can also undergo flip-flop movements in the lipid bilayer
Q46) Protein synthesis in an animal cell occurs (CBSE AIPMT 2005,2000)
Only on the ribosomes present in the cytosol
Only on ribosomes attached to the nuclear envelope & endoplasmic reticulum
On ribosomes present in the nucleolus as well as in the cytoplasm
On ribosomes present in the cytoplasm as well as in mitochondria
Answer- On ribosomes present in the cytoplasm as well as in mitochondria
Q47) Chlorophyll in chloroplast is located in (CBSE AIPMT 2005)
Grana
Pyrenoid
Stroma
Both (a) & (c)
Answer- Grana
Q48) A student wishes to study the cell structure under a light microscope having 10X eyepiece & 45X objective. He should illuminate the object by which one of the following colours of light so as to get the best possible resolution? (CBSE AIPMT 2005)
Blue
Green
Yellow
Red
Answer- Blue
Q49) Extra nuclear inheritance is a consequence of presence of genes in (CBSE AIPMT 2004)
Mitochondria & chloroplasts
Endoplasmic reticulum & mitochondria
Ribosomes & chloroplast
Lysosomes & ribosomes
Answer- Mitochondria & chloroplasts
Q50) In chloroplasts, chlorophyll is present in the (CBSE AIPMT 2004)
Outer membrane
Inner membrane
Thylakoids
Stroma
Answer- Thylakoids
Q51) Flagella of prokaryotic & eukaryotic cells differ in (CBSE AIPMT 2004)
Type of movement & placement in a cell
Location in cell & mode of functioning
Microtubular organisation & type of movement
Microtubular organisation & function
Answer- Microtubular organisation & type of movement
Q52) Ribosomes are produced in (CBSE AIPMT 2002)
Nucleolus
Cytoplasm
Mitochondria
Golgi body
Answer- Nucleolus
Q53) In ‘fluid mosaic model’ of plasma membrane (CBSE AIPMT 2002)
Upper layer is non-polar & hydrophilic
Upper layer is polar & hydrophobic
Phospholipids form a bimolecular layer in middle part
Proteins form a middle layer
Answer- Phospholipids form a bimolecular layer in middle part
Q54) Microtubules are absent in (CBSE AIPMT 2001)
Mitochondria
Centriole
Flagella
Spindle fibres
Answer- Mitochondria
Q55) Lysosomes are reservoirs of (CBSE AIPMT 2000)
RNA & protein
Fats
Secretory glycoproteins
Hydrolytic enzymes
Answer- Hydrolytic enzymes
Q56) The cell organelle involved in glycosylation of protein is (CBSE AIPMT 2000)
Ribosome
Peroxisome
Endoplasmic reticulum
Mitochondria
Answer- Endoplasmic reticulum
Recent Comments