Cell Biology Question Paper

Chapter 3.1: Cell - The Unit of Life

Section A: Multiple Choice Questions (100 Questions - 1 Mark Each)

Instructions: Choose the correct answer from the given options.

Who proposed the cell theory? a) Darwin and Wallace b) Matthias Schleiden and Theodor Schwann c) Watson and Crick d) Mendel and Morgan

The term "Omnis cellula-e cellula" means: a) All cells are similar b) All cells arise from pre-existing cells c) All cells have nucleus d) All cells reproduce

Prokaryotic cells lack: a) Cell wall b) Ribosomes c) Membrane-bound nucleus d) Genetic material

The nucleoid region contains: a) Ribosomes b) Naked genetic material c) Membrane-bound organelles d) Proteins only

Type of ribosomes found in prokaryotic cells: a) 60S b) 70S c) 80S d) 90S

Peptidoglycan is found in: a) Plant cell walls b) Animal cell membranes c) Bacterial cell walls d) Fungal cell walls

Blue-green algae are also known as: a) Chlorophyta b) Cyanobacteria c) Rhodophyta d) Phaeophyta

PPLO stands for: a) Pleuro Pneumonia Like Organisms b) Plant Pathogenic Living Organisms c) Primitive Prokaryotic Living Organisms d) Parasitic Pathogenic Living Organisms

Eukaryotic cells have ribosomes of type: a) 70S in cytoplasm b) 80S in cytoplasm c) 60S in cytoplasm d) 90S in cytoplasm

Which organelle is absent in animal cells? a) Mitochondria b) Plastids c) Ribosomes d) Golgi apparatus

Large central vacuole is characteristic of: a) Animal cells b) Bacterial cells c) Plant cells d) Fungal cells

Centrioles are absent in: a) Animal cells b) Higher plant cells c) Fungal cells d) Bacterial cells

The fluid mosaic model was proposed by: a) Watson and Crick b) Singer and Nicolson c) Schleiden and Schwann d) Darwin and Wallace

Plasma membrane is described as: a) Rigid structure b) Quasi-fluid structure c) Crystalline structure d) Gaseous structure

Integral proteins are: a) On the surface of membrane b) Embedded in the membrane c) Outside the membrane d) In the cytoplasm

Selective permeability means: a) Allows all molecules to pass b) Allows no molecules to pass c) Allows only specific molecules to pass d) Allows only water to pass

Movement of molecules along concentration gradient is: a) Active transport b) Passive transport c) Facilitated diffusion d) Osmosis

Osmosis is the movement of: a) Solutes b) Water c) Proteins d) Ions

Active transport requires: a) Concentration gradient b) ATP c) Carrier proteins only d) Water

Cell wall is made of cellulose in: a) Animal cells b) Plant cells c) Bacterial cells d) Fungal cells

Endomembrane system includes: a) Nucleus and mitochondria b) ER, Golgi, lysosomes, vacuoles c) Ribosomes and plastids d) Cytoskeleton and centrioles

Rough ER has: a) Ribosomes on its surface b) Smooth surface c) No ribosomes d) Only proteins

Smooth ER is involved in: a) Protein synthesis b) Lipid synthesis c) Carbohydrate synthesis d) Nucleic acid synthesis

Steroidal hormones are synthesized in: a) Rough ER b) Smooth ER c) Golgi apparatus d) Lysosomes

Golgi apparatus consists of: a) Tubules b) Flattened sacs (cisternae) c) Vesicles only d) Filaments

Lysosomes are known as: a) Powerhouses b) Suicidal bags c) Protein factories d) Storage organelles

Lysosomes contain: a) Hydrolytic enzymes b) Oxidative enzymes c) Photosynthetic enzymes d) Respiratory enzymes

In plant cells, vacuoles can occupy up to: a) 50% of cell volume b) 70% of cell volume c) 90% of cell volume d) 100% of cell volume

Mitochondria are known as: a) Suicidal bags b) Powerhouses c) Protein factories d) Storage organelles

Mitochondria have: a) Single membrane b) Double membrane c) Triple membrane d) No membrane

Chloroplasts are found in: a) All plant cells b) All animal cells c) All bacterial cells d) Green plant cells only

Chromoplasts contain: a) Chlorophyll b) Carotenoid pigments c) No pigments d) Stored nutrients

Leucoplasts are: a) Green plastids b) Colored plastids c) Colorless plastids d) Absent in plants

Ribosomes are composed of: a) RNA and proteins b) DNA and proteins c) Lipids and proteins d) Carbohydrates and proteins

Cytoskeleton is made of: a) Carbohydrates b) Lipids c) Proteinaceous structures d) Nucleic acids

Cilia and flagella are involved in: a) Respiration b) Locomotion c) Photosynthesis d) Digestion

Centrosome contains: a) One centriole b) Two centrioles c) Three centrioles d) Four centrioles

Centrioles help in: a) Protein synthesis b) Cell division c) Respiration d) Photosynthesis

Nucleus is surrounded by: a) Single membrane b) Double membrane c) Triple membrane d) No membrane

Nucleolus is the site of: a) DNA replication b) Protein synthesis c) Ribosome synthesis d) Lipid synthesis

Chromatin condenses to form: a) Ribosomes b) Chromosomes c) Proteins d) Enzymes

Metacentric chromosomes have centromere at: a) One end b) Near one end c) Middle d) Absent

Telocentric chromosomes have centromere at: a) Middle b) Near one end c) Terminal end d) Absent

Which is NOT a component of cell theory? a) All organisms are made of cells b) All cells come from pre-existing cells c) All cells have DNA d) All cells produce other cells

Mycoplasma is an example of: a) Eukaryotic cell b) Prokaryotic cell c) Plant cell d) Animal cell

Which organelle is called the "traffic director" of the cell? a) ER b) Golgi apparatus c) Lysosome d) Ribosome

Facilitated diffusion requires: a) Energy b) Carrier proteins c) ATP d) Concentration gradient against

The space between the two membranes of nucleus is called: a) Nucleoplasm b) Perinuclear space c) Chromatin d) Nucleolus

Which plastid gives yellow color to flowers? a) Chloroplast b) Chromoplast c) Leucoplast d) Amyloplast

Ribosomes in mitochondria are of type: a) 60S b) 70S c) 80S d) 90S

Cell wall provides: a) Shape and protection b) Energy c) Protein synthesis d) Genetic information

Which component is absent in prokaryotic cells? a) Ribosomes b) DNA c) Membrane-bound organelles d) Cell wall

The primary function of smooth ER in liver cells is: a) Protein synthesis b) Detoxification c) Carbohydrate synthesis d) ATP production

Autophagy is performed by: a) Ribosomes b) Lysosomes c) Mitochondria d) Golgi apparatus

The cristae in mitochondria increase: a) Volume b) Surface area c) Membrane thickness d) Protein content

Tonoplast is the membrane of: a) Nucleus b) Mitochondria c) Vacuole d) Chloroplast

Grana are found in: a) Mitochondria b) Chloroplasts c) Nucleus d) Golgi apparatus

Which is the most abundant organelle in secretory cells? a) Mitochondria b) Rough ER c) Smooth ER d) Lysosomes

Peroxisomes are involved in: a) Protein synthesis b) Lipid metabolism c) Carbohydrate synthesis d) DNA replication

The nuclear envelope is continuous with: a) Plasma membrane b) Endoplasmic reticulum c) Golgi apparatus d) Mitochondria

Microtubules are made of: a) Actin b) Myosin c) Tubulin d) Keratin

Microfilaments are composed of: a) Tubulin b) Actin c) Myosin d) Keratin

The 9+2 arrangement is found in: a) Centrioles b) Cilia and flagella c) Ribosomes d) Chromosomes

Basal body is structurally similar to: a) Ribosome b) Centriole c) Nucleus d) Mitochondria

Satellite chromosomes are found in: a) Metacentric b) Submetacentric c) Acrocentric d) Telocentric

Histone proteins are associated with: a) Ribosomes b) DNA c) Lipids d) Carbohydrates

The term "chromosome" was coined by: a) Waldeyer b) Flemming c) Sutton d) Morgan

Heterochromatin is: a) Loosely packed b) Tightly packed c) Absent d) Transparent

Euchromatin is: a) Tightly packed b) Loosely packed c) Absent d) Opaque

Nuclear pores allow passage of: a) Only proteins b) Only RNA c) Proteins and RNA d) Only water

Cisternae are found in: a) Ribosomes b) Golgi apparatus c) Centrioles d) Cytoskeleton

The term "protoplasm" includes: a) Cytoplasm only b) Nucleus only c) Cytoplasm and nucleus d) Cell wall only

Plasmolysis occurs when cell is placed in: a) Isotonic solution b) Hypotonic solution c) Hypertonic solution d) Pure water

Turgor pressure is maintained by: a) Cell wall b) Vacuole c) Cytoplasm d) Nucleus

The study of cells is called: a) Histology b) Cytology c) Anatomy d) Physiology

Prokaryotic cells divide by: a) Mitosis b) Meiosis c) Binary fission d) Budding

Chlorophyll is located in: a) Stroma b) Thylakoids c) Cristae d) Matrix

ATP is produced in: a) Cytoplasm b) Nucleus c) Mitochondria d) Ribosomes

Protein synthesis occurs in: a) Nucleus b) Ribosomes c) Golgi apparatus d) Lysosomes

DNA replication occurs in: a) Cytoplasm b) Ribosomes c) Nucleus d) Mitochondria

Transcription occurs in: a) Cytoplasm b) Ribosomes c) Nucleus d) Golgi apparatus

Translation occurs in: a) Nucleus b) Ribosomes c) Golgi apparatus d) Lysosomes

Glycocalyx is found in: a) Plant cells b) Animal cells c) Bacterial cells d) Fungal cells

Mesosomes are found in: a) Eukaryotic cells b) Prokaryotic cells c) Plant cells only d) Animal cells only

Plasmids are found in: a) Eukaryotic cells b) Prokaryotic cells c) Plant cells only d) Animal cells only

Inclusion bodies contain: a) Enzymes b) Reserve materials c) Genetic material d) Waste products

Capsule in bacteria is made of: a) Peptidoglycan b) Cellulose c) Polysaccharides d) Proteins

Pili are involved in: a) Locomotion b) Conjugation c) Respiration d) Photosynthesis

Magnetosomes are found in: a) All bacteria b) Some bacteria c) Eukaryotic cells d) Archaea

Carboxysomes are found in: a) Animals b) Plants c) Cyanobacteria d) Fungi

Gas vesicles help in: a) Respiration b) Photosynthesis c) Buoyancy d) Reproduction

Thylakoids are arranged in stacks called: a) Cristae b) Grana c) Stroma d) Lamellae

Stroma is the: a) Membrane of chloroplast b) Fluid-filled space in chloroplast c) Stacks of thylakoids d) Pigment molecules

Chloroplast DNA is: a) Linear b) Circular c) Branched d) Absent

Mitochondrial DNA is: a) Linear b) Circular c) Branched d) Absent

Endosymbiotic theory explains origin of: a) Nucleus b) Mitochondria and chloroplasts c) Ribosomes d) Golgi apparatus

Cytoplasmic streaming is also called: a) Cyclosis b) Plasmolysis c) Osmosis d) Diffusion

Phragmoplast is involved in: a) Cell division in animals b) Cell division in plants c) Photosynthesis d) Respiration

Middle lamella is composed of: a) Cellulose b) Calcium pectate c) Lignin d) Chitin

Plasmodesmata are: a) Connections between plant cells b) Connections between animal cells c) Organelles in cytoplasm d) Structures in nucleus

Section B: Short Answer Questions (100 Questions - 1 Mark Each)

Instructions: Write brief answers in 1-2 sentences.

Define cell theory.

Who modified the cell theory and what did they add?

Name two examples of prokaryotic organisms.

What is nucleoid?

What type of ribosomes are found in bacteria?

What is peptidoglycan?

Give the full form of PPLO.

Name one difference between plant and animal cells.

What is the fluid mosaic model?

Define selective permeability.

What is osmosis?

Name the two types of transport across membranes.

What is active transport?

What is the function of cell wall?

List the components of endomembrane system.

What is the difference between rough and smooth ER?

What are cisternae?

Why are lysosomes called suicidal bags?

What is the function of vacuoles in plants?

Why are mitochondria called powerhouses?

Name three types of plastids.

What is the function of chloroplasts?

What gives color to chromoplasts?

What are leucoplasts?

What is the composition of ribosomes?

What is cytoskeleton?

What is the function of cilia?

How many centrioles are present in a centrosome?

What surrounds the nucleus?

Where is the nucleolus located?

What is chromatin?

What are chromosomes?

Define metacentric chromosome.

What is a telocentric chromosome?

Name the scientist who coined the term chromosome.

What is heterochromatin?

What is euchromatin?

What are nuclear pores?

What is protoplasm?

What is plasmolysis?

What maintains turgor pressure in plants?

What is cytology?

How do prokaryotic cells divide?

Where is chlorophyll located in chloroplasts?

Where is ATP produced in cells?

Where does protein synthesis occur?

Where does DNA replication occur?

What is glycocalyx?

What are mesosomes?

What are plasmids?

What do inclusion bodies contain?

What is the bacterial capsule made of?

What is the function of pili?

What are magnetosomes?

Where are carboxysomes found?

What is the function of gas vesicles?

What are grana?

What is stroma?

What type of DNA is found in chloroplasts?

What theory explains the origin of mitochondria?

What is cyclosis?

What is phragmoplast?

What is middle lamella made of?

What are plasmodesmata?

What is tonoplast?

What are cristae?

What is the 9+2 arrangement?

What is a basal body?

What are satellite chromosomes?

What are histone proteins?

What is binary fission?

What are thylakoids?

What is endosymbiotic theory?

What is facilitated diffusion?

What is the perinuclear space?

What is autophagy?

What are peroxisomes involved in?

What are microtubules made of?

What are microfilaments composed of?

What is transcription?

What is translation?

What is turgor pressure?

What is isotonic solution?

What is hypotonic solution?

What is hypertonic solution?

What is diffusion?

What are integral proteins?

What are peripheral proteins?

What is concentration gradient?

What is ATP?

What are hydrolytic enzymes?

What is photosynthesis?

What is aerobic respiration?

What are carotenoids?

What is cellulose?

What is lignin?

What is chitin?

What is calcium pectate?

What is the function of flagella?

What is the difference between cilia and flagella?

Section C: Medium Answer Questions (100 Questions - 2 Marks Each)

Instructions: Write detailed answers in 3-4 sentences.

Explain the postulates of cell theory.

Compare prokaryotic and eukaryotic cells.

Describe the structure of plasma membrane.

Explain passive transport with examples.

Differentiate between active and passive transport.

Describe the structure and function of rough ER.

Explain the role of smooth ER in animal cells.

Describe the structure and function of Golgi apparatus.

Explain why lysosomes are called suicidal bags.

Describe the structure of mitochondria.

Explain the different types of plastids.

Compare chloroplasts and mitochondria.

Describe the structure of ribosomes.

Explain the components of cytoskeleton.

Compare cilia and flagella.

Describe the structure of centrosome.

Explain the components of nucleus.

Describe the different types of chromosomes.

Explain the fluid mosaic model of membrane.

Describe the process of osmosis.

Explain the endomembrane system.

Describe the function of vacuoles in plants.

Explain the structure of cell wall.

Describe the process of facilitated diffusion.

Explain the difference between chromatin and chromosomes.

Describe the structure of nucleolus.

Explain the function of nuclear envelope.

Describe the types of membrane proteins.

Explain the concept of selective permeability.

Describe the structure of chloroplasts.

Explain the function of cristae in mitochondria.

Describe the process of protein synthesis.

Explain the difference between transcription and translation.

Describe the structure of bacterial cell wall.

Explain the concept of turgor pressure.

Describe the process of plasmolysis.

Explain the endosymbiotic theory.

Describe the structure of flagella.

Explain the function of peroxisomes.

Describe the composition of chromatin.

Explain the difference between heterochromatin and euchromatin.

Describe the structure of nuclear pores.

Explain the process of cyclosis.

Describe the function of middle lamella.

Explain the role of plasmodesmata.

Describe the structure of thylakoids.

Explain the function of grana.

Describe the composition of stroma.

Explain the structure of centrioles.

Describe the function of basal bodies.

Explain the concept of satellite chromosomes.

Describe the role of histone proteins.

Explain the process of binary fission.

Describe the structure of mesosomes.

Explain the function of plasmids.

Describe the composition of inclusion bodies.

Explain the role of bacterial capsule.

Describe the function of pili.

Explain the structure of magnetosomes.

Describe the function of carboxysomes.

Explain the role of gas vesicles.

Describe the structure of glycocalyx.

Explain the difference between integral and peripheral proteins.

Describe the process of endocytosis.

Explain the concept of concentration gradient.

Describe the structure of lysosomes.

Explain the function of hydrolytic enzymes.

Describe the process of autophagy.

Explain the structure of peroxisomes.

Describe the function of microtubules.

Explain the composition of microfilaments.

Describe the 9+2 arrangement.

Explain the difference between smooth and rough ER.

Describe the function of Golgi apparatus.

Explain the structure of vacuoles.

Describe the function of tonoplast.

Explain the difference between plant and animal vacuoles.

Describe the structure of ribosomes in detail.

Explain the function of 70S ribosomes.

Describe the structure of 80S ribosomes.

Explain the difference between free and bound ribosomes.

Describe the process of ribosome synthesis.

Explain the function of nucleolus.

Describe the structure of nuclear envelope.

Explain the process of nuclear transport.

Describe the organization of chromatin.

Explain the structure of chromosomes.

Describe the types of chromosomes based on centromere position.

Explain the concept of karyotype.

Describe the structure of centromere.

Explain the function of spindle fibers.

Describe the process of chromosome condensation.

Explain the difference between prokaryotic and eukaryotic ribosomes.

Describe the structure of bacterial chromosome.

Explain the organization of eukaryotic chromosome.

Describe the function of telomeres.

Explain the structure of nucleosome.

Describe the levels of chromosome organization.

Explain the concept of chromatin remodeling.

Describe the structure and function of nuclear matrix.

Section D: Long Answer Questions (100 Questions - 3 Marks Each)

Instructions: Write comprehensive answers in 5-6 sentences with diagrams where necessary.

Explain the cell theory in detail with its historical development and significance.

Compare and contrast prokaryotic and eukaryotic cells with suitable examples.

Describe the fluid mosaic model of plasma membrane with its components and significance.

Explain the different types of transport across cell membrane with examples.

Describe the endomembrane system and explain how its components work together.

Explain the structure and functions of endoplasmic reticulum with its types.

Describe the structure and functions of Golgi apparatus in detail.

Explain the structure and functions of lysosomes and their role in cellular digestion.

Describe the structure of mitochondria and explain its role as powerhouse of the cell.

Explain the different types of plastids and their functions in plant cells.

Compare the structure and functions of mitochondria and chloroplasts.

Describe the structure and functions of ribosomes in protein synthesis.

Explain the cytoskeleton and its role in maintaining cell shape and movement.

Describe the structure and functions of cilia and flagella in cellular locomotion.

Explain the structure and functions of nucleus as the control center of the cell.

Describe the different types of chromosomes and their structural organization.

Explain the process of osmosis and its significance in plant and animal cells.

Describe the structure and functions of cell wall in plants and bacteria.

Explain the concept of selective permeability and its importance in cellular transport.

Describe the structure and functions of vacuoles in plant cells.

Explain the endosymbiotic theory and its evidence for the origin of organelles.

Describe the process of photosynthesis and the role of chloroplasts.

Explain the process of cellular respiration and the role of mitochondria.

Describe the structure and organization of genetic material in prokaryotes.

Explain the structure and organization of genetic material in eukaryotes.

Describe the process of protein synthesis from transcription to translation.

Explain the structure and functions of nuclear envelope and nuclear pores.

Describe the structure and functions of nucleolus in ribosome synthesis.

Explain the organization of chromatin and its role in gene expression.

Describe the process of chromosome condensation during cell division.

Explain the structure and functions of centrosome and centrioles.

Describe the molecular structure of plasma membrane and membrane proteins.

Explain the mechanism of active transport and its energy requirements.

Describe the structure and functions of peroxisomes in cellular metabolism.

Explain the concept of turgor pressure and its importance in plant cells.

Describe the process of plasmolysis and its significance in plant physiology.

Explain the structure and functions of cytoplasmic streaming in plant cells.

Describe the structure and functions of plasmodesmata in plant cell communication.

Explain the structure and composition of bacterial cell wall.

Describe the structure and functions of bacterial appendages.

Explain the organization of genetic material in bacterial cells.

Describe the process of binary fission in prokaryotic cell division.

Explain the structure and functions of inclusion bodies in bacterial cells.

Describe the structure and functions of mesosomes in bacterial cells.

Explain the role of plasmids in bacterial genetics and biotechnology.

Describe the structure and functions of bacterial capsule.

Explain the mechanism of bacterial conjugation and the role of pili.

Describe the specialized structures in cyanobacteria and their functions.

Explain the structure and organization of thylakoid system in chloroplasts.

Describe the Calvin cycle and its location in chloroplasts.

Explain the electron transport chain and its location in mitochondria.

Describe the structure and functions of cristae in mitochondria.

Explain the process of ATP synthesis in mitochondria.

Describe the structure and functions of ribosomes in prokaryotes and eukaryotes.

Explain the process of ribosome biogenesis and the role of nucleolus.

Describe the structure and functions of rough endoplasmic reticulum.

Explain the process of protein folding and quality control in ER.

Describe the structure and functions of smooth endoplasmic reticulum.

Explain the process of lipid synthesis in smooth ER.

Describe the structure and functions of Golgi apparatus in protein processing.

Explain the process of vesicle trafficking in the endomembrane system.

Describe the structure and functions of lysosomes in cellular digestion.

Explain the process of autophagy and its regulation.

Describe the structure and functions of vacuoles in plant cells.

Explain the process of vacuole biogenesis and membrane trafficking.

Describe the structure and organization of cytoskeleton.

Explain the functions of microtubules in cellular processes.

Describe the structure and functions of microfilaments.

Explain the process of cytoplasmic streaming and its regulation.

Describe the structure and functions of intermediate filaments.

Explain the molecular mechanism of muscle contraction.

Describe the structure and functions of cilia and flagella.

Explain the 9+2 arrangement of microtubules in cilia and flagella.

Describe the process of ciliary and flagellar movement.

Explain the structure and functions of basal bodies.

Describe the molecular organization of centrosome.

Explain the process of centrosome duplication during cell cycle.

Describe the structure and functions of nuclear envelope.

Explain the molecular mechanism of nuclear transport.

Describe the organization of nuclear pores and their selectivity.

Explain the structure and functions of nuclear matrix.

Describe the process of nuclear envelope breakdown and reformation.

Explain the molecular organization of chromatin.

Describe the structure and functions of nucleosomes.

Explain the process of chromatin remodeling and its regulation.

Describe the different levels of chromosome organization.

Explain the structure and functions of heterochromatin and euchromatin.

Describe the molecular mechanism of chromosome condensation.

Explain the structure and functions of centromere and kinetochore.

Describe the process of chromosome segregation during cell division.

Explain the structure and functions of telomeres.

Describe the molecular mechanism of DNA replication.

Explain the process of transcription and RNA processing.

Describe the molecular mechanism of translation.

Explain the structure and functions of transfer RNA.

Describe the process of ribosome assembly and function.

Explain the molecular mechanism of protein folding.

Describe the process of protein targeting and sorting.

Explain the molecular basis of membrane transport.

Describe the integration of cellular processes in maintaining cell homeostasis.

BioBot

Cell - The Unit of Life

Cell Biology Question Paper

Chapter 3.1: Cell - The Unit of Life

Section A: Multiple Choice Questions (100 Questions - 1 Mark Each)

Section B: Short Answer Questions (100 Questions - 1 Mark Each)

Section C: Medium Answer Questions (100 Questions - 2 Marks Each)

Section D: Long Answer Questions (100 Questions - 3 Marks Each)

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BioBot

Cell - The Unit of Life

Cell Biology Question Paper

Chapter 3.1: Cell - The Unit of Life

Section A: Multiple Choice Questions (100 Questions - 1 Mark Each)

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