Please refer to Chapter 8 Cell The Unit of Life MCQ Class 11 Biology with answers below. These multiple-choice questions have been prepared based on the latest NCERT book for Class 11 Biology. Students should refer to MCQ Questions for Class 11 Biology with Answers to score more marks in Grade 11 Biology exams. Students should read the chapter Cell The Unit of Life and then attempt the following objective questions.

MCQ Questions Class 11 Biology Chapter 8 Cell The Unit of Life

The Cell The Unit of Life MCQ Class 11 Biology provided below covers all important topics given in this chapter. These MCQs will help you to properly prepare for exams.

Question. Plasmodesmata are cytoplasmic bridges between adjacent plant cells, lined by…………… and often have desmotubules.
(a) Membrane of Golgi apparatus
(b) Plasma membrane
(c) Tonoplast
(d) ER tubule

Question. Choose an option with the correct statements from the list below:
I. The telomere is heterochromatic in nature.
II. The telocentric chromosomes has terminal centromere.
III. Satellite is located near primary constriction.
IV. Sub metacentric chromosomes are L-shaped.
Options :
(a) I and II 
(b) II and III
(c) III and IV 
(d) I, II and IV

Question. The telomeres of eukaryotic chromosomes consist of sequences of :-
(a) Thymine rich repeat
(b) Cytosine rich repeat
(c) Adenine rich repeat
(d) Guanine rich repeat

Question. Select the incorrect statement with respect to centrioles.
(a) Cartwheel-like structural organization.
(b) They are made up of nine evenly spaced peripheral microtubules of tubulin.
(c) The central part is non-proteinaceous and called the hub.
(d) They form the basal body of cilia or flagella.

Question. In the given organelle below, which part is associated with the receiving of materials to be delivered?

(a) Cis face
(b) Trans face
(c) Maturing face
(d) Concave face

Question. How many of the given statements are correct?
I. Connectivity of the plasmodesmeta is maintained by ER membrane called dictyosomes.
II. Totally buried proteins in membrane are integral protein while partly buried proteins are peripheral proteins.
III. The primary cell wall is capable of growth.
IV. The peroxisome is not included in the endomembrane system.
Options :
(a) One 
(b) Two
(c) Three 
(d) Four

Question. From the following, the correct appearance of chromosomes at the beginning of prophase of mitosis and the number of DNA strands in the chromosomes is:
(a) Appearance of one chromosome : number of DNA strands : 2
(b) Appearance of one chromosome : number of DNA strands : 4
(c) Appearance of one chromosome : number of DNA strands : 1
(d) Appearance of one chromosome : number of DNA strands : 2

Question. Select correct statements:
(A) Diplotene stage is recognized by the formation of the synaptonemal complex
(B) Recombination nodules contain recombinase enzyme
(C) In anaphase II separation of homologous chromosomes occurs
(D) Inter kinesis is generally short- lived
Options :
(a) A and B
(b) B and C
(c) B and D
(d) A and C

Question. Match the following column I with column II

Column-I	Column-II
A. Metaphase	1. Centromere with 2 kinetochores
B. Anaphase-I	2. Disjunction
C. Mitosis	3. Synapsis
D. Zygotene	4. Equational division

Options :
(a) A B C D
1 2 4 3
(b) A B C D
3 1 4 2
(c) A B C D
2 3 1 4
(d) A B C D
4 1 3 2

Question. The enzyme recombinase is required at which stage of meiosis?
(a) Pachytene
(b) Zygotene
(c) Diplotene
(d) Diakinesis

Question. Ribosomes were discovered by
(a) Golgi
(b) Porter
(c) Robertis
(d) Palade

Question. Most of water, in mature plant cells occurs in
(a) nucleus
(b) cell wall
(c) vacuoles
(d) cytoplasm

Question. Which of the following is absent in prokaryotes?
(a) DNA
(b) RNA
(c) Plasma membrane
(d) Mitochondria

Question. The interphase nucleus is enclosed in
(a) a porous double membrane
(b) a non-porous single membrane
(c) a porous double membrane
(d) many membranes

Question. Function of RER is
(a) autolysis
(b) protein synthesis
(c) lipid synthesis
(d) carbohydrate synthesis

Question. Active transport across biomembrane involves
(a) production of ATP
(b) requirement of energy
(c) production of toxin
(d) release of energy

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) none of the above.

Question. Centrioles and centrosomes occur in the cells of
(a) green plants
(b) animals
(c) bacteria and cyanobacteria
(d) both (b) and (c)

Question. The membrane of the erythrocytes has approximately ___% of proteins and ___% lipids.
(a) 42, 50
(b) 52, 40
(c) 50, 50
(d) 60, 40

Question. Which of the following statements is/are correct ?
(I) The shape of the cells may vary with the function they perform.
(II) Human RBC is about 7.0 ??m in diameter.
(III) Cytoplasm is the main area of cellular activities.
(IV) Various chemical reactions occur in cytoplasm to keep the cell in the living state.
(a) (i), (ii), (iii) and (iv)
(b) Only (i) and (ii)
(c) Only (iv)
(d) None of the above

Question Golgi apparatus is concerned with
(a) excretion
(b) secretion
(c) ATP synthesis
(d) RNA synthesis

Question. The best material for study of structure of cell membrane is
(a) RBC of human
(b) RBC of frog
(c) cheek cell of human
(d) liver cell of rat

Question. Which one of the following is not considered as part of the endomembrane system?
(a) Golgi complex
(b) Peroxisome
(c) Vacuole
(d) Lysosome

Question. Which of the following statements is/are correct ?
(I) The endomembrane system includes plasma membrane, ER, Golgi complex, lysosomes and vacuoles.
(II) ER helps in the transport of substances, synthesis of proteins, lipoproteins and glycogen.
(III) Ribosomes are involved in protein synthesis.
(IV) Mitochondria help in oxidative phosphorylation and generation of ATP.
(a) (ii), (iii) & (iv)
(b) (i) only
(c) (ii) only
(d) (iii) only

Question. Consider the following statements and choose the correct statement.
(I) The endomembrane system includes mitochondria, chloroplast and peroxisomes.
(II) Smooth endoplasmic reticulum is the major site for synthesis of lipid.
(III) Rough endoplasmic reticulum is actively involved in protein synthesis.
(IV) Mitochondrial matrix possesses single circular DNA, a few RNA and 80S ribosomes. Of the above statements.
(a) (i) and (iii)
(b) (ii) and (iv)
(c) (iii) and (iv)
(d) (ii) and (iii)

Question. Microtubules are absent in
(a) mitochondria
(b) centriole
(c) flagella
(d) spindle fibres

Question. The organelle regarded a sugar factory in an autotrophic eukaryotic cell is
(a) Mitochondrion
(b) Ribosome
(c) Chloroplast
(d) Endoplasmic reticulum.

Question. Smallest unit in cell wall is
(a) Middle lamella
(b) Microfibil
(c) Micelle
(d) Fibril

Question. pH of vacuolar cell sap is
(a) neutral and isotonic.
(b) alkaline and isotonic.
(c) acidic and hypertonic.
(d) equal to cytoplasm and isotonic.

Question . The best way to identify a cell as either prokaryotic or eukaryotic is to determine whether
(a) it came from a single-celled or multicellular organism.
(b) it has a nucleus.
(c) it has a plasma membrane.
(d) it has cytosol.

Question. Desmosomes are connected with
(a) cytolysis
(b) cell division
(c) cell excretion
(d) cell adherence.

Question. Fluid mosaic model of cell membrane was proposed by
(a) Singer and Nicholson
(b) waston and crick
(c) Robertson
(d) danielli and davson

Question. Statement 1: Centrosomes and centrioles are related to each other.
Statement 2: Centrosome usually contains two cylindrical structures called centrioles.
(a) Both statements -1 and statement – 2 are true and statement – 2 is the correct explanation of statement – 1.
(b) Both statements -1 and statement – 2 are true but statement – 2 is not the correct explanation of statement – 1.
(c) Statement -1 is true and statement – 2 is false.
(d) Statement -1 is false and statement – 2 is true.

Question. Which of the following pair are correctly matched ?
(I) Amyloplasts Store proteins
(II) Mitochondrion Power house of the cell
(III) Stroma Chlorophyll pigment
(IV) Axoneme 9 + 2 array
(a) (I) and (III) only
(b) (II), (III) and (IV) only
(c) (III) and (IV) only
(d) (II) and (IV) only

Question. Organelle covered
(a) Glyoxysome
(b) lysosome
(c) Glyoxysome
(d) All of these

Question. Which one of the following combination is mismatched?
(a) Glycocalyx May be capsule or slime layer
(b) Pili Reproduction
(c) Cell wall Protective, determines shape, prevents from bursting
(d) Flagella, pili and fimbriae Surface structures of bacterial cell

Question. Which one of the following combination is mismatched?
(a) Glycocalyx May be capsule or slime layer
(b) Pili Reproduction
(c) Cell wall Protective, determines shape, prevents from bursting
(d) Flagella, pili and fimbriae Surface structures of bacterial cell

Question. Difference between the prokaryotic and eukaryotic cells in having
(a) cell wall
(b) nuclear membrane
(c) ribosome
(d) none of these

Question. Function of contractile vacuole in Amoeba is
(a) excretion and osmoregulation.
(b) digestion and respiration.
(c) osmoregulation and transportation.
(d) none of the above.

Question. Extension of plasma membrane in prokaryotic cell is
(a) mesosome
(b) haploid
(c) ribosome
(d) none of these

Question. The plant cell wall possesses
(a) Hemicellulose
(b) Cellusose
(c) Pectin
(d) All of these

Question. Which of the following statement of a bacterial cell is/are correct?
(I) Mesosome is formed by the extensions of plasma membrane into the cell.
(II) The pili are elongated tubular structures made up of a protein.
(III) Flagellum is composed of filament, hook and basal body.
(IV) Ribosomes are about 30 nm by 50 nm in size.
(a) (i), (ii), (iii)
(b) All of the above
(c) (ii) & (iv)
(d) None of the above

Question. Which of the following statement is false?
(a) The ribosomes of a polysome translate the mRNA into protein.
(b) Mitochondria divide by fragmentation.
(c) All cell arise from pre-existing cells.
(d) The lipid component of the membrane mainly consists of phosphoglycerides.

Question. The presence of several types of organ systems in the body of multicellular organism is a unique example of …………….

Question. The study of structure, composition, functions and life processes of the cell is called ……………

Question. In fact, the plant cells possess a conspicuous thick layer of cellilose covering the cell membrane called the …………..

Question. The bacteria can be classifed into two groups on the basis of the differences in the cell envelopes viz the …………. and …………..

Question. Sometimes a few chromosomes have secondary constrictions at a constant location, which are their non-staining region and give the appearance of a small fragment called the satellite.

Question. Based on the type of pigments present in them plastids can be classified into chloroplasts, chromoplasts and leucoplasts.

Question. The eukaryotic cells usually possess a large sized, almost centrally located and densely stained organelle containing the genetic material called nucleus.

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