Practice Corner MCQs

Unicellular microscopic organisms were first studied by

The most likely method, used to determine the structural details of a cell organelle is

The figures of cork cells as seen by Robert Hooke were published in the book

Cell theory was formulated by

‘Omnis cellula-e cellula’ i.e., new cells arise from preexisting cells; this statement was given by

Match column I with column II and select the correct ontion from the codes qiven below.

\(
\begin{array}{|c|l|c|l|}
\hline & \text { Column I } & & \text { Column II } \\
\hline \text { A. } & \text { Leeuwenhoek } & \text { (i) } & \begin{array}{l}
\text { First saw and described a } \\
\text { living cell }
\end{array} \\
\hline \text { B. } & \text { Robert Brown } & \text { (ii) } & \begin{array}{l}
\text { Presence of cell wall is } \\
\text { unique to plant cells }
\end{array} \\
\hline \text { C. } & \text { Schleiden } & \text { (iii) } & \text { Discovered the nucleus } \\
\hline \text { D. } & \text { Schwann } & \text { (iv) } & \begin{array}{l}
\text { All plants are composed of } \\
\text { different kinds of cell }
\end{array} \\
\hline
\end{array}
\)

Who proposed a modification in the cell theory?

Tarun observed a slide of white blood cells under microscope. His teacher asked him to draw the diagram. Select the diagram which should be drawn by Tarun.

What is true about genetic material of a prokaryotic cell?

____ are self replicating, extra chromosomal segments of double stranded circular and naked DNA, present in a bacterial cell.

Prokaryotic cells are generally ____ and multiply ____ than the eukaryotic cells.

\(X\) is a structure found in prokaryotes that is concerned with storage of reserve food materials like cyanophycean granules. \(\mathrm{X}\) could be

Longest portion of bacterial flagella is

Glycocalyx (mucilage sheath) of a bacterial cell may occur in the form of a loose sheath called _____ or it may be thick and tough called ______.

Correct sequence of layers of bacterial cell envelope from outward to inward is

Mesosomes are the infoldings of cell membrane, which
(i) are present in both prokaryotic and eukaryotic cells.
(ii) help in cell wall formation, DNA replication and respiration.
(iii) increase the surface area of plasma membrane.

Which of the following is enveloped by a nuclear membrane?

If you remove the fimbriae from the bacterial cell, which of the following would you expect to happen?

The type of ribosomes found in prokaryotes is

Which of these is not correct regarding ribosomes?

Polyribosomes are aggregation of

Plant cells differ from animal cells in having

Identify the parts labelled as A, B, C and D in the given ultrastructure of a plant cell and select the correct option.

Given is the ultrastructure of an animal cell. Identify the parts marked as A, B, C and D.

\(
\begin{array}{|c|c|c|c|c|}
\hline & \text { A } & \text { B } & \mathbf{C} & \text { D } \\
\hline \text { (a) } & \text { Plasm membrane } & \text { Nucleus } & \text { Mitochondrion } & \text { Golgi complex } \\
\hline \text { (b) } & \text { Plasma membrane } & \text { Vacuole } & \text { Mitochondrion } & \text { Golgi complex } \\
\hline \text { (c) } & \text { Cell wall } & \text { Nucleus } & \text { Mitochondrion } & \text { RER } \\
\hline \text { (d) } & \text { Cell wall } & \text { Vacuole } & \text { Chloroplast } & \text { Golgi complex } \\
\hline
\end{array}
\)

According to unit membrane structure, the thickness of plasma membrane is about

The best material for the study of structure of cell membrane is

Which chemical property is shared by all types of lipids forming the plasma membrane?

The lipid molecules present in plasma membrane have polar heads and non-polar tails (as shown in the figure). Which option represents the correct arrangement of lipids in lipid bilayer?

A phospholipid molecule is amphipathic and produces two layers coming in contact with \(\mathrm{H}_2 \mathrm{O}\). The head of phospholipid molecule is

Lipids are arranged within the membrane with

The most abundant lipid in the cell membrane is

Which is the best way to separate intact chloroplast from green leaves of angiospermic plant?

Cell recognition and adhesion are facilitated by components of plasma membrane. These components are generally

Select the incorrect statement regarding the plasma membrane.

Identify the components labelled as A, B, C and D in the given figure of cell membrane from the list (i) to (vii) given along with and select the correct option.

Components :
(i) Sugar
(iii) Lipid bilayer
(v) Cytoplasm
(ii) Protein
(iv) Integral protein
(vii) External protein
(vi) Cell wall
The correct matching of components is

Integral cell membrane proteins

The latest model of cell membrane is the

According to the modern concept, cell membrane is

The molecules in the membrane that limit its permeability are the

Who gave the lamellar or sandwich model of cell membrane?

The fluid mosaic model explains which aspects of a cell membrane?

Cell membrane is selective permeable. This means that it

Many molecules can move briefly across the membrane without any requirement of energy and special membrane proteins. This is called _____.

Choose the incorrect statement regarding cell membrane.

Which of the following is an energy dependent process?

The function of intracellular membrane is not to

If you remove the cell wall from a plant cell and place it into a drop of water

Continuity of cytoplasm from cell to cell is maintained through cytoplasmic connections in plants called

Dye injected into a plant cell might be able to enter an adjacent cell through

Which organelle is not a part of the endomembrane system?

A cell, which is very active in the synthesis and secretion of proteins, would be expected to have

The cell organelle involved in the glycosylation of proteins is

____ is directly connected to the outer nuclear membrane.

P and Q are the major sites for the synthesis of respectively.

Mechanical support, enzyme circulation, protein synthesis and detoxification of drugs are the functions of

Smooth endoplasmic reticulum is well developed in the cells which synthesise

Which organelle helps in the synthesis of lipids, cholesterol, steroids and visual pigments in epithelial cells of retina?

Which group of organelles is involved in synthesis of substances needed by cell?

Which of the following cell organelles are named after the name of its discoverer?

Select the option with correct labelling of given structure of Golgi apparatus.

These are the densely stained reticular structures present near the nucleus, consisting of many flat, disc shaped cisternae of \(0.5-1.0 \mu \mathrm{m}\) diameter. These are

Read the given statements and select the correct option.
Statement 1: The cisternae in Golgi complex have cis face and trans face.
Statement 2: The cis face is also called forming face and trans face is also called maturing face.

Which of these is not a function of Golgi apparatus?

Packing of substances for export from the cell occurs in the

Cells which are secretory in function have abundant

Which of the following is correct for the origin of lysosome \((\mathrm{L})\)?

Lysosomes are ____ vesicular structures formed by the process of packaging in the ____.

Which one is the mis-matched pair?

Lysosomes are the reservoirs (storehouses) of

Which of the following represents the features of lysosomes?

Cell organelle responsible for autolysis is

As they release hydrolase that digest old and damaged cells, the term suicide bags is aptly used by cell biologists for

How does a cell rid itself of defective or malfunctioning organelles?

Match column I with column II and select the correct option from the codes given below.

\(
\begin{array}{|c|l|c|l|}
\hline & \text { Column I } & & \text { Column II } \\
\hline \text { A. } & \text { RER } & \text { (i) } & \begin{array}{l}
\text { Intracellular and extracellular } \\
\text { digestion }
\end{array} \\
\hline \text { B. } & \text { SER } & \text { (ii) } & \text { Lipid synthesis } \\
\hline \text { C. } & \begin{array}{l}
\text { Golgi } \\
\text { complex }
\end{array} & \text { (iii) } & \text { Protein synthesis and secretion } \\
\hline \text { D. } & \text { Lysosomes } & \text { (iv) } & \text { Moves materials out of the cell } \\
\hline
\end{array}
\)

Which of the following statements regarding sphaerosomes is not correct?

Read the given statements regarding a cell organelle.
(i) It contains water, sap, excretory products and other unwanted materials.
(ii) It is bounded by a single membrane called tonoplast.
(iii) In plant cells, it can occupy upto \(90 \%\) of cellular volume.
(iv) Its contents form cell sap.
(v) It maintains turgor pressure.
The above features are attributed to

Who coined the term for the given figure?

In which of the following parts of mitochondria succinic dehydrogenase enzyme is located?

Which of the following observations most strongly support the view that mitochondria contain electron transport enzymes aggregated into compact association?

Study the following statements regarding mitochondria and select the correct ones.
(i) These are the sites of aerobic respiration.
(ii) Matrix contains single, circular dsDNA molecule, a few RNA molecules, 70S ribosomes.
(iii) Mitochondria divide by fission.
(iv). Mitochondria are fully-autonomous.

Which of the following statements is incorrect?

All plastids have essentially the same structure because

Bright colour of petals is due to the presence of

Match column I with column II and select the correct option from the codes given below.

\(
\begin{array}{|c|l|c|l|}
\hline & \text { Column I } & & \text { Column II } \\
\hline \text { A. } & \text { Chloroplasts } & \text { (i) } & \text { Colourless plastids } \\
\hline \text { B. } & \text { Chromoplasts } & \text { (ii) } & \begin{array}{l}
\text { Yellow, orange or red } \\
\text { coloured plastids }
\end{array} \\
\hline \text { C. } & \text { Leucoplasts } & \text { (iii) } & \text { Green plastids } \\
\hline
\end{array}
\)

Which of the following is the correct match?

Amyloplasts, elaioplasts and aleuroplasts belong to ____ category of plastids.

Select the incorrect pair.

Read the given statements.
(i) Flat membranous sacs in stroma of chloroplasts
(ii) Infoldings in mitochondria
(iii) Disc shaped sacs in Golgi apparatus

Select the correct option as per the given codes.

Match column I with column II and select the correct option from the codes given below.

Identify A and B in the given figure and select the correct option.

In chloroplasts, chlorophyll is present in the

Extranuclear inheritance is due to the presence of genes in

Read the given statements and select the correct option.

Statement 1: Chloroplast and mitochondria are semiautonomous bodies.
Statement 2: Chloroplast and mitochondria have their own DNA and protein synthesising machinery.

____ are granular structures first observed under electron microscope as dense particles by ____ (1955).

Ribosomes are composed of

Eukaryotic ribosome, chloroplast and mitochondrion are respectively

Which of the following is correct for the given structure?

The core of a cilium or flagellum composed of microtubules and their associated proteins is called

An organelle with an internal cross-section showing characteristic ” \(9+2\) ” array is the

Which of the following is correct regarding the structure of a section of cilia/flagella?

The movement of cilia and flagella is due to the presence of

Arrangement of microtubules in a flagellum and a centriole is respectively

Which of the following statements is incorrect for centrioles?

Which of the following options is correct about structures visible in the cross-section of a centriole?

Match the cell organelles given in column I with cellular processes in column II and select the correct option from the codes given below.

\(
\begin{array}{|c|c|c|c|}
\hline & \text { Column I } & \text {  } & \text { Column II } \\
\hline \text { A. } & \text { Lysosomes } & \text { (i) } & \text { Protein synthesis } \\
\hline \text { B. } & \text { Ribosomes } & \text { (ii) } & \text { Hydrolytic activity } \\
\hline \text { C. } & \begin{array}{l}
\text { Smooth endoplasmic } \\
\text { reticulum }
\end{array} & \text { (iii) } & \text { Steroid synthesis } \\
\hline \text { D. } & \text { Centriole } & \text { (iv) } & \text { Formation of spindle } \\
\hline
\end{array}
\)

Select the wrong statement with respect to the structure of a plant cell.

Centrioles arise from

Match column I with column II and select the correct option from the codes given below.

\(
\begin{array}{|l|l|l|l|}
\hline & \text { Column I } & & \text { Column II } \\
\hline \text { A. } & \text { Mitochondria } & \text { (i) } & \text { Without membrane } \\
\hline \text { B. } & \text { Lysosomes } & \text { (ii) } & \text { Single membrane } \\
\hline \text { C. } & \text { Ribosomes } & \text { (iii) } & \text { Double membrane } \\
\hline \text { D. } & \text { Nucleus } & & \\
\hline
\end{array}
\)

Match column I with column II and select the correct option from the codes given below.

\(
\begin{array}{|c|c|c|c|}
\hline & \text { Column I } & & \text { Column II } \\
\hline \text { A. } & \text { Nucleolus } & \text { (i) } & \text { Lipid storage } \\
\hline \text { B. } & \text { Sphaerosomes } & \text { (ii) } & \text { Glycolate metabolism } \\
\hline \text { C. } & \text { Peroxisomes } & \text { (iii) } & \begin{array}{l}
\text { Transport of } \\
\text { macromolecules }
\end{array} \\
\hline \text { D. } & \text { Plasmodesmata } & \text { (iv) } & \text { RNA synthesis } \\
\hline
\end{array}
\)

In eukaryotic cells, the given figure is synthesised in

According to most recent studies, each chromosome consists of

Which of the following is correct regarding the given figure?

\(
\begin{array}{cccc}
& \begin{array}{c}
\text { No. of } \\
\text { centromere }
\end{array} & \begin{array}{c}
\text { No. of } \\
\text { kinetochore }
\end{array} & \begin{array}{c}
\text { No. of } \\
\text { arms }
\end{array} \\
\text { (a) } & 2 & 1 & 4 \\
\text { (b) } & 1 & 2 & 4 \\
\text { (c) } & 2 & 2 & 4 \\
\text { (d) } & 1 & 2 & 2
\end{array}
\)

The chromosome in which centromere lies slightly away from the middle of the chromosome resulting into one shorter arm and one longer arm, is called as

Refer to the given figure.

Select the option which correctly identifies (i-iii).

\(
\begin{array}{llll}
& \text { Metacentric } & \text { Submetacentric } & \text { Acrocentric } \\
\text { (a) } & \text { (i) } & \text { (ii) } & \text { (iii) } \\
\text { (b) } & \text { (i) } & \text { (iii) } & \text { (ii) } \\
\text { (c) } & \text { (ii) } & \text { (i) } & \text { (iii) } \\
\text { (d) } & \text { (ii) } & \text { (iii) } & \text { (i) }
\end{array}
\)

What does A, B and C represent in the given figure of a chromosome?

Cell organelle extracted from endosperm of germinating castor beans are

The function of glyoxysome is

Read the given statements and select the correct option.
Statement 1: Peroxisomes are involved in photorespiration of the plant cells and help in the lipid metabolism of animal cells.

Statement 2: Peroxisomes are the cells’ garbage disposal system.

Which one of these is not correct regarding peroxisomes?

____ are the microbodies, which take part in glyoxylate pathway, bounded by a single membrane and are usually present in germinating fatty seeds.

Due to some mutation, sperms of animal X lack an organelle that also plays an important role in digesting limiting membrane of egg to facilitate entry of sperm. This organelle is filled with hydrolytic enzymes. Identify this organelle and select the correct option regarding it.

Organelle X bears ribosomes on its outer surface. Organelle X and organelle Y together give rise to organelle Z which is often referred to as ‘suicide bag’ of cells. Identify organelles X, Y and Z and select the incorrect option regarding them.

Refer to the given diagram of an animal cell and select the option that correctly describes the functional relationship between organelles P and Q.

Among the following cell organelles P, Q, R and S, which is the odd one out?

Read the following statements about organelle.
(i) Network of tiny tubular structures, scattered in the eukaryotic cell cytoplasm.
(ii) It divides the intracellular space into two distinct compartments.
(iii) Ribosomes are attached to their outer surface.
Select the most suitable statement for the structure, above discussed.

Organelle ‘X’ is the major centre of release of energy in aerobic respiration, but is absent in prokaryotes and anaerobic eukaryotes. It can be stained differentially with Janus Green. Identify the organelle X.

Refer to the words given in box and find out that majority belongs to which of the following cell organelle.
Kinetochore, Tonoplast, Nucleolus, Telomere, Ribophorin, cis face, Maturing face, Cellulose, DNA, Pectin, Radial spokes, Chromatin, Nuclear pore complex