Students can refer to MCQ Questions for Class 11 Cell: The Unit of Life provided below. You should solve these questions and compare your answers with the solutions provided below by our teachers. The MCQs for Grade 11 Cell: The Unit of Life have been updated based on the latest syllabus and examination guidelines issued by CBSE, NCERT and KVS.
Class 11 Cell: The Unit of Life MCQs Questions with Answers
See below free multiple choice questions for Class 11 Cell: The Unit of Life. By practicing these MCQ Questions for Class 11 Biology you will be able to revise the entire course and also test your understanding
MCQ Questions for Class 11 Cell: The Unit of Life
Question. The cell wall of plant consists of
(c) Pectins and proteins
Question. Which statement about the plant cell wall is not true?
(a) Its principle chemical composition is polysaccharide
(b) It is rigid
(c) It completely isolates adjacent cells
Question. A mutant cell, unable to manufacture cellulose would be unable to
(a) Build a cell wall
(b) Capture sunlight
(c) Store food
Question. Choose the false statement
(a) The 1º cell wall of young cell is capable of growth
(b) Growth of 1°cell wall diminishes as the cell matures
(c) 1° cell wall is very non- elastic
(d) Secondary cell wall is thicker, stronger and positioned between the 1° cell wall and cell membrane
Question. ER, GB, lysosome and vacuoles are components of endomembranous system because
(a) Their structures are distinct
(b) Their functions are distinct
(c) Their functions are coordinated
Question. In fluid mosaic model of plasma membrane
(a) upper layer is non-polar and hydrophilic
(b) upper layer is polar and hydrophobic
(c) phospholipids form a bimolecular layer in middle part
(d) proteins form a middle layer.
Question. Element necessary for the middle lamella is
Question. 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 odified in several respects. In this regard, which of the following statements is incorrect?
(a) Proteins in cell membranes can travel within the lipid bilayer.
(b) Proteins can also undergo flip-flop movements in the lipid bilayer.
(c) Proteins can remain confined within certain omains of the membrane.
(d) Many proteins remain completely embedded within the lipid bilayer.
Question. Centromere is required for
(a) movement of chromosomes towards poles
(b) cytoplasmic cleavage
(c) crossing over
Question. Microtubules are absent in
(c) spindle fibres
Question. Lysosome contains
(a) oxidative enzymes
(b) hydrolytic enzymes
(c) reductive enzymes
(d) anabolic enzymes.
Question. Which cell organelle is concerned with glycosylation of protein?
(c) Endoplasmic reticulum
Question. Which of the following organelles has single membrane?
(d) Cell wall
Question. The proteins are synthesised at
(b) Golgi bodies
Question. Lysosomes are rich in
(a) nucleic acids
(b) hydrolytic enzymes
Question. The desmosomes are concerned with
(a) cell division
(b) cell adherence
(d) cellular excretion.
Question. Which of the following ribosomes are engaged in protein synthesis in animal cell?
(a) Ribosomes which occur on nuclear membrane and ER
(b) Ribosomes of only cytosol
(c) Ribosomes of only nucleolus and cytosol
(d) Ribosomes of only mitochondria and cytosol
Question. Function of telomeres in nucleus is
(a) poleward movement
(b) to initiate the RNA synthesis
(c) to seal the ends of chromosome
(d) to recognise the homologous chromosome.
Question. Which of the following organelles contain enzymes that have digestive action?
Question. In mitochondria, cristae act as sites for
(a) protein synthesis
(b) phosphorylation of flavoproteins
(c) breakdown of macromolecules
(d) oxidation-reduction reaction.
Question. Centromere is required for
(a) replication of DNA
(b) chromosome segregation
(c) poleward movement of chromosomes
(d) cytoplasmic cleavage.
Question. Which one of the following organelles is located near the nucleus and contains a collection of flattened membrane bound cisternae?
(d) Golgi apparatus
Question. The inner membrane of the mitochondria is, usually, highly convoluted forming a series of infoldings known as
Question. Besides giving out secretory vesicles, the Golgi apparatus is also concerned with the formation of
(c) grana of chloroplasts
(d) cell plates after cell division in plants.
Question. Active and passive transports across cell membrane differ in
(a) passive transport is nonselective
(b) passive transport is along the concentration gradient while active transport is due to metabolic energy
(c) active transport is more rapid
(d) passive transport is confined to anions while active transport is confined to cations.
Question. Membranous bag with hydrolytic enzymes which is used for controlling intracellular digestion of macromolecules is
(a) endoplasmic reticulum
Question. Golgi apparatus is absent in
(a) higher plants
(c) bacteria and blue-green algae
Question. Cell recognition and adhesion occur due to biochemicals of cell membranes named
(c) proteins and lipids
(d) glycoproteins and glycolipids.
Question. In salivary gland chromosomes/polytene chromosomes, pairing is
(c) formed between non-homologous chromosomes
(d) formed between homologous chromosomes.
Question. Balbiani rings (puffs) are sites of
(a) DNA replication
(b) RNA and protein synthesis
(c) synthesis of polysaccharides
(d) synthesis of lipids.
Question. In plant cells, peroxisomes are associated with
Question. All types of plastids possess essentially the same structure because they
(a) perform the same function
(b) store food materials like starch, fat and protein
(c) occur in aerial parts
(d) can transform from one form to another.
Question. Experiments on Acetabularia by Hammerling proved the role of
(a) cytoplasm in controlling differentiation
(b) nucleus in heredity
(c) chromosomes in heredity
(d) nucleo-cytoplasmic ratio.
Question. All plastids have similar structure because they can
(a) store starch, lipids and proteins
(b) get transformed from one type to another
(c) perform same function
(d) be present together.
Question. Oxysomes or F0 – F1 particles occur on
(b) mitochondrial surface
(c) inner mitochondrial membrane
(d) chloroplast surface.
Question. Ribosomes are the centre for
(c) protein synthesis
(d) fat synthesis.
Question. Which is distributed more widely in a cell?
Question. Which one is apparato reticolare?
(a) Golgi apparatus
(b) Endoplasmic reticulum
Question. An outer covering membrane is absent over
Question. According to fluid mosaic model, plasma membrane is composed of
(a) phospholipids and oligosaccharides
(b) phospholipids and hemicellulose
(c) phospholipids and integral proteins
(d) phospholipids, extrinsic proteins and intrinsic proteins.
Question. Fluid mosaic model of cell membrane was put forward by
(a) Danielli and Davson
(b) Singer and Nicolson
(c) Garner and Allard
(d) Watson and Crick.
Question. Hammerling’s experiments of Acetabularia involved exchanging
(c) rhizoid and stalk
Question. The latest model for plasma membrane is
(a) lamellar model
(b) unit membrane model
(c) fluid mosaic model
(d) molecular lipid model.
Question. Nucleoproteins are synthesised in
(b) nuclear envelope
Question. Polyribosomes are aggregates of
(a) ribosomes and rRNA
(b) only rRNA
(d) several ribosomes held together by string of mRNA.
Question. Plasma membrane is made of
(a) proteins and carbohydrates
(b) proteins and lipids
(c) proteins, lipids and carbohydrates
(d) proteins, some nucleic acid and lipids.
Question. Acetabularia used in Hammerling’s nucleocytoplasmic experiments is
(a) unicellular fungus
(b) multicellular fungus
(c) unicellular uninucleate green algae
(d) unicellular multinucleate green algae.
Question. Addition of new cell wall particles amongst the existing ones is
Question. Cell wall shows
(a) complete permeability
(c) differential permeability
Question. Ribosomes were discovered by
(c) de Robertis
Question. A cell divides every minute. At this rate of cell division it can fill a 100ml of beaker in one hour. How much time does it take to fill a 50ml of beaker?
(a) 29 minutes
(b) 30 minutes
(c) 59 minutes
(d) 60 minutes
Question. Which of following statements is incorrect regarding mitochondria?
(a) Matrix possesses single ds circular DNA molecule and ribosomes of 70s type.
(b) Site of aerobic and anaerobic respiration
(c) Outer membrane forms the continuous limiting boundary of the organelle ,while inner membrane is folded into cristae.
(d) Mitochondria divide by fission like division to increase its number.
Question. Select the incorrect statement from the following :-
(a) Cytoskeleton is proteinaceous filamentous structure
(b) Cytoskeleton provides mechanical support to cell.
(c) Cytoskeleton helps in motility and maintenance of shape of cell
(d) Cytoskeleton is found in both eukaryotic and prokaryotic cell.
Question. Nuclear DNA exists as complex of nucleoprotein called —A—- that condense into —-B—- during —–C—-. These A, B, C are respectively.
(a) Chromatids, Chromosomes, Interkinesis.
(b) Chromosomes, Chromatin, S-phase
(c) Chromatin, Chromosomes, Interphase
(d) Chromatin, Chromosomes, M-phase
Question. Select the events that occur in the interphase stage of cell-cycle :-
(a) RNA and protein synthesis
(b) Cytoplasmic growth
(c) Synthesis of spindle fibres protein
(d) Disappearance of Golgi body and ER.
(a) a and d only
(b) a, b and c only
(c)) b, c and d only
(d) c and d only
Question. Second check point of cell cycle lies between
(a) G1 and S phase
(b) S and G2 phase
(c) G2 and M phase
(d) M and G1 phase
Question. How many chromosomes will the diploid cell contain at G1, after S and after M-phase respectively if the haploid cell has 7 chromosomes?
(a) 7, 7, 14
(b) 7, 14, 14
Question. Nucleolus is :
(a) Rounded structure found in cytoplasm near nucleus.
(b) Rounded structure inside nucleus and having rRNA
(c) Rod-shaped structure in cytoplasm near the nucleus.
(d) Rod-shaped structure attached with ER.
Question. Select the correct diagram that shows the anaphase I stage.
Question. The theory given by Schleiden and Schwann and modified by Virchow is not applicable to:
Question. Which of the following organelles is present exclusively in plants?
Question. In an organism, if the normal diploid number of chromosomes is 8. How many chromatids are present in each daughter cell at the end of meiosis-I –
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