Cell - The unit of Life : #MCQs from NCERT : [Difficulty Level-Medium] ( < 70% students solved correctly )( 40+ Qs)

 

Question:   From NCERT NEET  Derived PYQ 

Which of the following is the largest constituent of the membrane of the
erythrocyte in human beings and is also responsible for performing most of the functions of the membrane?

1.Proteins

2.Lipids

3.Glycolipids

4.Glycoproteins

 Answer ▽ 

2.Lipids

• Erythrocytes are also known as RBC. It takes oxygen from the lungs and transport to the whole body. 
• The cytoplasm of erythrocytes is rich in hemoglobin, which is iron-containing biomolecules. 
• The membrane of RBC is composed of proteins and lipids. It contains approximately 40% of proteins and 52% lipid. The remaining 8% is composed of oligosaccharides

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Question:   From NCERT NEET  Derived PYQ 

In human beings, the membrane of erythrocyte has____________________

A

approximately 40% proteins and 52% lipids

B

cephalin on the outer side and lecithin on the inner side

C

approximately 52% proteins and 40% carbohydrates

D

lecithin on the outer side and cephalin on the inner side

Medium

 Answer ▽ 

• Erythrocytes are also known as RBC. It takes oxygen from the lungs and transport to the whole body. 
• The cytoplasm of erythrocytes is rich in hemoglobin, which is iron-containing biomolecules. 
• The membrane of RBC is composed of proteins and lipids. It contains approximately 40% of proteins and 52%. The remaining 8% is composed of oligosaccharides

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Question:   From NCERT NEET  Derived PYQ 

Human RBC is

A

Oval, biconvex, enucleated

B

Round, biconvex, enucleated

C

Round, biconcave, enucleated

D

Oval, biconcave, nucleated

E

Oval, biconvex, nucleated

Medium

 Answer ▽ 

Human erythrocytes or RBCs have a shape of disc that appears to be 'caved in' or almost flattened in the middle. This biconcave shape allows RBCs to bend and flow smoothly through the narrowest blood vessels in the body. Mammalian cells are enucleated in their mature form. They are small and round in shape.
Thus, the correct answer is option C. 

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Question:   From NCERT NEET  Derived PYQ 

Micropolice of human blood is

A

Neutrophil

B

Basophil

C

Eosinphil

D

Lymphocyte

Hard

 Answer ▽ 

Neutrophils are known as micropolice of blood because of their phagocytotic nature. They engulf the foreign particles and digest them. Their number increases upon bacterial infection. Hence, the correct answer is option A.

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Question:   From NCERT NEET  Derived PYQ 

Who concluded, based on his studies on plant tissues, that the presence of cell wall is a unique character of plant cells ?

(1) Mathias Schleiden

(2) Theodore Schwann

(3) Rudolph Virchow

(4) Robert Hooke

 Answer ▽ 

2

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Question:   From NCERT NEET  Derived PYQ 

The outer membrane of the nucleus:

I. is continuous with the Endoplasmic reticulum

II. does not bear ribosomes.

1. Only I is correct

2. Only II is correct

3. Both I and II are correct

4. Both I and II are incorrect

 Answer ▽ 

1

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Question:   From NCERT NEET  Derived PYQ 

If the centromere is situated close to the end of a chromosome, it is called as:

1. Metacentric

2. Submetacentric

3. Acrocentric

4. Telocentric

 Answer ▽ 

3

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Question:   From NCERT NEET  Derived PYQ 

Prokaryotic cells have something unique in the form of:

1. Inclusion bodies

2. Plasmids

3. Cell wall

4. 70 S ribosomes

 Answer ▽ 

1

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Question:   From NCERT NEET  Derived PYQ 

Ribosomes are produced in

1. Nucleolus

2. Mitochondria

3. Cytoplasm

4. Golgibody

 Answer ▽ 

1

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Question:   From NCERT NEET  Derived PYQ 

A feature unique to prokaryotes would be:

1. A cell wall not made up of cellulose

2. An extrachromosomal plasmid DNA

3. A cell membrane of peptidoglycan

4. Presence of inclusions

 Answer ▽ 

4

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Question:   From NCERT NEET  Derived PYQ 

Chromatophores are:

1. present in liopolysaccharide layer of gram negative bacteria

2. colored pigments present in fluorescent bacteria

3. vesicles that store pigments in prokaryotic cells

4. extensions on membrane in cynobacteria 

 Answer ▽ 

4

In some forms of photosynthetic bacteria, a chromatophore is a coloured, membrane-associated vesicle used to perform photosynthesis. ... They contain different coloured pigments. Chromatophores contain bacteriochlorophyll pigments and carotenoids.

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Question:   From NCERT NEET  Derived PYQ 

The tail of the phospholipid molecule:

1. is hydrophilic and composed of phosphate

2. is hydrophilic and composed of saturated hydrocarbons

3. is hydrophobic and composed of saturated hydrocarbons

4. is hydrophobic and composed of unsaturated hydrocarbons

 Answer ▽ 

3

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Question:   From NCERT NEET  Derived PYQ 

Fat soluble pigments like xanthophylls are present in:

1. Chromoplasts

2. Aleuroplasts

3. Elaioplasts

4. Amyloplasts

 Answer ▽ 

1

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Question:   From NCERT NEET  Derived PYQ 

In the given diagram, what is true for both A and B?

1. They are involved in protein synthesis

2. They synthesize steroidal hormones in animal cells

3. They are a part of endomembranous system of a eukaryotic cell

4. They are continuous with the inner membrane of the nucleus

 Answer ▽ 

3

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Question:   From NCERT NEET 2015  Derived PYQ 

The chromosomes in which centromere is situated close to one end are

1. metacentric               

2. acrocentric

3. telocentric                 

4. sub-metacentric

 Answer ▽ 

2

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Question:   From NCERT NEET  Derived PYQ AIIMS - 2015

Which one of the following structure is an organelle within an organelle?

(1) Ribosome

(2) Peroxysome

(3) ER

(4) Mesosome

 Answer ▽ 

The ribosomes are the cell organelle that is present inside the other cell organelles like endoplasmic reticulum, mitochondria, and chloroplast. They are known as an organelle within an organelle.

 In the 1950s with the help of the electron microscope the Romanian-American George Amil Palade first discovered the ribosomes.

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Question:   From NCERT NEET  Derived PYQ 

Arrange the following in the increasing of their size

(1)virus< PPLO< typical bacteria< typical eukaryotic cell

(2) PPLO< virus< typical bacteria< typical eukaryotic cell

(3) virus< PPLO< typical eukaryotic cell< typical bacteria

(4) virus> PPLO> typical bacteria> typical eukaryotic cell

 Answer ▽ 

1

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Question:   From NCERT NEET  Derived PYQ 

In membranes, the lipids are arranged within the membrane with the ______heads towards the outer sides and the _________ tails towards the inner part.

(1)polar, charged

(2)polar, hydrophobic

(3)polar, nonpolar

(4)Both B and C

 Answer ▽ 

(4)Both B and C

In lipid bilayer, lipids are arranged with the polar head towards the outer side and the hydrophobic/ non-polar tails towards the inner side.

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Question:   From NCERT NEET  Derived PYQ 

The nature of membrane lipids is :

A

Zwitterionic

B

Hydrophobic

C

Amphipathic

D

Uncharged

 Answer ▽ 

Membrane lipids are amphipathic, that is they possess both polar hydrophilic heads and nonpolar hydrophobic tails.

So, the correct answer is 'Amphipathic'

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Question:   From NCERT NEET  Derived PYQ 

Which one is true for the cell membrane

(1)The ratio of lipids and proteins is fixed in membranes

(2)The amount of carbohydrates is greater than other biomolecules

(3)In human erythrocytes amount of protein is more than that of lipids

(4)All of the above

 Answer ▽ 

3

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Question:   From NCERT NEET  Derived PYQ 

The common component between the cell wall of algae and plants is

(1)cellulose

(2)Hemicellulose

(3)Both A and B

(4)Mannans

 Answer ▽ 

1

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Question:   From NCERT NEET  Derived PYQ 

Which of the following is true about ribosome except

(1)site of protein synthesis

(2)universal cell organelle

(3)70s is present only in prokaryotes

(4)80s is present in eukaryotes

 Answer ▽ 

3

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Question:   From NCERT NEET  Derived PYQ 

Bacteria store their reserved food materials in

(1)Vacuoles

(2)Inclusion bodies                             

(3)Both A and B

(4)Sphaerosomes

 Answer ▽ 

(2)Inclusion bodies     

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Question:   From NCERT NEET  Derived PYQ 

Cytoskeleton is made up of

(1)Proteins

(2)carbohydrates

(3)lipids

(4)All of these

 Answer ▽ 

(1)Proteins

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Question:   From NCERT NEET  Derived PYQ 

Cilia and flagella are

(1)microtubule

(2)microfilament

(3)intermediate filament

(4)Both A and B

 Answer ▽ 

(1)microtubule

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Question:   From NCERT NEET   Derived PYQ 

How many of the following structures are synthesised by microtubules?

Centrioles, basal body, cilia, flagella, spindle fibres

(1)5

(2)4

(3)3

(4)2

 Answer ▽ 

(1)5

Microtubule is structural component of spindle fiber, cilia, flagella, centriole etc.

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Question:   From NCERT NEET  Derived PYQ 

Which of the following is the structural and functional unit of bacterial flagella and cilia

(1)axon

(2)axoneme

(3)flagellin

(4)All of the above

 Answer ▽ 

(2)axoneme

Cilia and flagella are hair-like outgrowths of the cell membrane. Cilia are small structures working like oars, causing the movement of either the cell or the surrounding fluid. Flagella in comparison are longer and responsible for cell movement. Both cilium and flagellum are covered with plasma membrane. Their core called axoneme, possesses a number of microtubules running parallel to the long axis.

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Question:   From NCERT NEET  Derived PYQ 

Which of the following is correct for the given structure?

A

These are small structures which work like oars

B

It is covered with plasma membrane

C

Its core is called axoneme

D

All of the above

Medium

 Answer ▽ 

Cilia and flagella are hair-like outgrowths of the cell membrane. Cilia are small structures working like oars, causing the movement of either the cell or the surrounding fluid. Flagella in comparison are longer and responsible for cell movement. Both cilium and flagellum are covered with plasma membrane. Their core called axoneme, possesses a number of microtubules running parallel to the long axis.

So, the correct answer is 'All of the above'.

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Question:   From NCERT NEET  Derived PYQ 

Which of the following statements regarding cilia is not correct?

A

Cilia contain an outer of nine doublet microtubules surrounding two single microtubules.

B

The organized beating of cilia is controlled by fluxes of Ca2+ across the membrane.

C

Cilia are hair-like cellular appendages.

D

Microtubules of cilia are composed of tubulin.

Medium

 Answer ▽ 

Correct option is B)

Cilium is an organelle found in eukaryotic cells and are hair-like appendages. Inside cilia, is a microtubule-based cytoskeleton called the axoneme. The axoneme of cilia has a ring of nine outer microtubule doublets and two central microtubule singlets in addition to the nine outer doublets, called 9+2 axoneme.

The organized beating of cilia, however, are produced by controlled sliding of outer doublet microtubules.

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Question:   From NCERT NEET  Derived PYQ 

The arrangement of peripheral microtubule in centrioles is

(1)9 as triplets

(2)9 as doublets

(3)9 as singlet

(4)Both A and B

 Answer ▽ 

1

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Question:   From NCERT NEET  Derived PYQ 

Which of the following vacuole is present in photosynthetic bacteria

(1)Food vacuole

(2)Gas vacuole

(3)Contractile vacuole

(4)Sap vacuole

 Answer ▽ 

2

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Question:   From NCERT NEET  Derived PYQ 

Materials to be packaged in the form of vesicles from the ER fuse with the _______ of the Golgi body and after packaging leaves from the ______face.

(1)cis, trans

(2)trans, cis

(3)convex, concave

(4)Both A and C

 Answer ▽ 

4

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Question:   From NCERT NEET  Derived PYQ 

Which of the following is true about SER (smooth endoplasmic reticulum), except

1. Ribosomes are absent

2. Actively involved in protein synthesis

3. Steroidal hormone synthesis site

4. Both A and C

 Answer ▽ 

2

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Question:   From NCERT NEET  Derived PYQ 

Chromatin can be observed in

(1)Interphase nucleus

(2)dividing nucleus

(3)Both A and B

(4)Nuclei of any stage

 Answer ▽ 

1

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Question:   From NCERT NEET  Derived PYQ 

On what basis chromosomes have been divided into four classes.

1. position of centromere

2. position of primary constriction

3. number of kinetochores

4. Both A and B

 Answer ▽ 

4

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Question:   From NCERT NEET  Derived PYQ 

A number of proteins synthesized by ribosomes on the endoplasmic reticulum are modified in the ______ of the Golgi apparatus before they are released from its trans face

(1) Tubules

(2) Vesicles

(3) Cisternae

(4) More than one option is correct

 Answer ▽ 

3

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Question:   From NCERT NEET  Derived PYQ 

The content of nucleolus is continuous with nucleoplasm

(1) Through microtubules

(2) Through nuclear pores

(3) Due to lack of membrane

(4) Due to presence of channels in membrane

 Answer ▽ 

3

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Question:   From NCERT NEET  Derived PYQ 

The given diagram represents the four different structures which one of these is correct containing material and function:-

a.	Nucleolus	NOR	Synthesis of rRNA for formation of 80 S Ribosome
b.	Nuclear Pore	Chromatin	Exchange material between cytoplasm and nucleoplasm
c.	Nucleoplasm Protein	Nucleoplasmin	Formation of nuclear matrix
d.	Nuclear membrane	Ribosome	Cellulose synthesis

1. A

2. B

3. C

4. D

 Answer ▽ 

1

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