InterviewSolution
Saved Bookmarks
InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 801. |
Desmosomes are concerned withA. cytolysisB. cell divisionC. cell adherenceD. cellular excretion |
|
Answer» Correct Answer - C Desmosomes (macula adherens) consists of intercellular thickening materials , disc-shaped intracellular thickening adjacents to each membrane with tonofibrils . These act as intercellular cementing material, adhere cells together at places like spot welding . |
|
| 802. |
House-keeping proteins occur inA. ERB. Golgi complexC. CytoskeletonD. All of these above |
| Answer» Correct Answer - D | |
| 803. |
Name the compounds that bind ribosomes to RER, Give their nature also. |
| Answer» Ribophorin-I and ribophorin-II, both are glycoproteins. | |
| 804. |
make a list of he organelles that function as cytoskeleton. |
| Answer» Endoplasmic reticulum, microtubules, microfilaments, intermediate fibres. | |
| 805. |
The arrangement of atoms in a molecule can be studies usingA. centrifugationB. histochemistryC. spectrophotometerD. X-ray crystallography |
| Answer» Correct Answer - D | |
| 806. |
Axoneme with 9+2 microtubular arrangement occurs inA. CiliaB. FlagellaC. Cilia and FlagellaD. Centriole |
| Answer» Correct Answer - C | |
| 807. |
Some scientists include lyososomes in microbodies but these can be differentiated due toA. their more of formationB. their small sizeC. presence of enzymesD. all of the above |
|
Answer» Correct Answer - A Lysosome and peroxisomes both are enzyme containing organelles. The main difference between them lies in their mode of formation. Lyososomes are formed by blebbing whereas peroxisomes are formed by the aggregation of proteins and lipids. |
|
| 808. |
Assertion- A cell membrane shows fluid behaviour. Reason- A membrane is a mosaic or composite of diverse lipids and proteins.A. Both assertion and Reason are true and reason is the correct explanation of assertionB. Both assertion and reason are true, but reason is not the correct explanation of assertionC. Assertion is true, but reason is falseD. Assertion is false, but reason is true |
|
Answer» Correct Answer - A The fluid mosaic model was put forward in 1970 by SJ singer and GL nicholson, According to this model, plasma membrane is composed of phospholipids, extrinsic proteins (peripheral proteins) and intrinsic proteins (integral proteins). The plasma membrane is highly fluidic due to the movement of phospholipids and proteins present in it. |
|
| 809. |
Assertion- Chloroplast is a cell organelle. Reason- An organelle is a distinct part of a cell, which has a particular structure and function.A. Both assertion and Reason are true and reason is the correct explanation of assertionB. Both assertion and reason are true, but reason is not the correct explanation of assertionC. Assertion is true, but reason is falseD. Assertion is false, but reason is true |
|
Answer» Correct Answer - A An organelle is a distinct part of a cell, which has a particular structure and function. Chloroplast, mitochondria, EF, Golgi body, etc., are the main cell organelles of plant cell. |
|
| 810. |
Assertion- Germinating seeds show more mitochondria than dormant seeds. Reason- Mitochondria are endosymbiotic in origin.A. Both assertion and Reason are true and reason is the correct explanation of assertionB. Both assertion and reason are true, but reason is not the correct explanation of assertionC. Assertion is true, but reason is falseD. Assertion is false, but reason is true |
|
Answer» Correct Answer - B Mitochondria are the site of aerobic respiration in eukaryotic cells, cells of germinating seeds show more number of mitochondriia as compared to those of dormant seeds because these seeds require more energy. |
|
| 811. |
Select the correct statement from the following regarding cell membrane.A. `Na^(+) and Ka^(+)` ions move across cell membrane by passive transport.B. Proteinsmake up 60-70% of the cell membraneC. lipids are arranged in a bilayer with polar heads towards the inner partD. fluid mosaic model of cell membrane was proposed by singer and nicholson |
|
Answer» Correct Answer - D In 1972, singer and nicholson proposed fluid mosaic model for internal structure of plasma membrane.this is most widely accepted model for plasma membrane. According to this model, a membrane consists of continous bilayer of phospholipid molecules in which globular proteins are embedded. the lipids are arranged in a bilayer with polar heads toward outside and non-polar tails towards inside. |
|
| 812. |
What is true about ribosomes ?A. The prokaryotic ribosomes are 80S, where S stands for sedimentation coefficientB. These are composed of ribonucleic aciid and proteinsC. These are found only in eukaryotic cellsD. These are self-splicing introns of some RNAs |
|
Answer» Correct Answer - B Ribosomes are large, non-membranous, RNA-protein complexes, which are necessary for protein synthesis. In prokaryotes, 70S type of ribosomes are found while 80S type of ribosomes are found in eukaryotes. |
|
| 813. |
Which one of the following does not differ in E. coli and ChlamydomonasA. RibosomesB. Chromosomal organisationC. cell wallD. cell membranes |
|
Answer» Correct Answer - D Cell membrane of prokaryotes is structurally similar to that of eukaryotes, so, it does not differ in E. coli and chlamydomonas. |
|
| 814. |
Which of the following organelle is believed to be an endosymbiont? (a) Ribosomes (b) Mitochondrion (c) Golgi bodies (d) Nucleus |
|
Answer» (b) Mitochondrion |
|
| 815. |
Name the organelles which are believed to be endosymbiont in Eukaryote cell. |
|
Answer» Chloroplast and Mitochondrion. |
|
| 816. |
Lysosomes contain a rich repertoire ofA. hydrolasesB. isomerasesC. transferasesD. oxido-redctases |
| Answer» Correct Answer - A | |
| 817. |
Lysosomes containA. HormoneB. Lytic enzymeC. Hydrolytic enzymeD. Useful material |
| Answer» Correct Answer - C | |
| 818. |
Name any two unique structures / organelles of a plant cell. |
|
Answer» Cell wall and Chloroplast. |
|
| 819. |
To study the living cells without staining, which of the following microscopes can be used?A. SEMB. FlorescentC. Phase contrastD. TEM |
| Answer» Correct Answer - C | |
| 820. |
Cell organelle present in both prokaryotic and eukaryotic cells isA. RibosomeB. E.RC. MitochondrionD. Nucleus |
|
Answer» Correct Answer - A Cell organelle present in both prokaryotic and eukaryotic cells is ribosome. |
|
| 821. |
The cell organelle associated with intercellular digestion of macromolecules is " " Or Which is concerned with autolsis " " Or One of the cell organelle is said to function as "trigger of cell division"A. LysosomeB. PeroxisomeC. PolysomeD. Glyoxisome |
|
Answer» Correct Answer - A Cell organelle connected with intracellular digestion of macromolecules is lysosome. |
|
| 822. |
Assertion. Lysosomes help in the process of photorespiration. Reason. Lysosomes contain basic enzymes.A. If both Assertion and Reason are true and Reason is the correct explanation of Assertion.B. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.C. If Assertion is true but Reason is false.D. If both Assertion and Reason are false. |
| Answer» Correct Answer - D | |
| 823. |
Membranous bag with hydrolytic enzymes which is used for controlling intracellular digestion of macromolecules isA. endoplasmic reticulumB. nucleosomeC. lysosomeD. phagosome |
|
Answer» Correct Answer - C The intracellular digestion, i.e. the breakdownof substances within the cytoplasm of a cell iscontrolled by lysosomes. Intracellular digestion occurs in animals that lack a digestive track. e.g. in Pycnogonida, Mollusca, Cnidaria and Porifera |
|
| 824. |
Write short notes on(a) Lysosomes(b) Vacuoles |
|
Answer» (a) Lysosomes: It is a membrane-bound vesicular structure formed by the process of packaging in the Golgi bodies. They are found to be very rich in hydrolytic enzymes like lipases, proteases, carbohydrases, etc. which help in digesting carbohydrates proteins, lipids and nucleic acids. (b) Vacuoles: Vacuole is the membrane-bound space found in the cytoplasm which contain water, sap, excretory product and other unwanted materials for the cell. It is bound by a single membrane called tonoplast. In plants, vacuoles can occupy 90% volume of the cell and tonoplast facilitates the transport of a member of ions and other materials against a concentration gradient into the vacuole. |
|
| 825. |
Which of the following dye is used for staining cell organelle, mitochondria?A. Janus GreenB. SafraninC. Azure BD. Crystal violet |
| Answer» Correct Answer - A | |
| 826. |
Name any four endomembrane structures. |
|
Answer» Four endomembrane structures: 1. Nuclear membrane 2. endoplasmic reticulum 3. vascular membrane 4. golgi bodies. |
|
| 827. |
Which one of the following organelle in the figure correctly matches with its functions? A. Rough endopolasmic reticulm, formation of glyco-proteinsB. Golgi apparatus, protein synthesisC. Golgi apparatus, formation of glycolipidsD. Rough endoplasmic reticulum protein synthesis |
| Answer» Correct Answer - D | |
| 828. |
Assertion : Centriole does not form any compartment in a cell. Reason: Centriole is a non-membranous cell organelle.A. If both Assertion and Reson are true and the Reason is the correct expalanatio of the Assertion.B. If both Assertion and Reson are true and the Reason is not the correct explain of the Assertion.C. If Assertion is true, but Reason is false.D. If both Assertion and Reason are flase. |
| Answer» Correct Answer - A | |
| 829. |
Assertion. Lysosomes are organelle in eukaryotic cell that contains digestive enzymes to digest macromolecules. Reason. Lysosomes are also called phagolysosomes or heterophagosomes or digestive vacuoles.A. If both Assertion and Reason are true and Reason is the correct explanation of Assertion.B. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.C. If Assertion is true but Reason is false.D. If both Assertion and Reason are false. |
| Answer» Correct Answer - A | |
| 830. |
How many of the given features are true for both endoplasmic reticulum and golgi complex? Presence of membrane, modification of proteins, endomembrane system, DNA, attached ribosomes, tubules and vesiclesA. fourB. sixC. fiveD. three |
| Answer» Correct Answer - A | |
| 831. |
Both lysosomes and vacuoles are endomembrane structures, yet they differ in terms of their functions. Comment. |
|
Answer» The functions of lysosomes and vacuoles are coordinated with the functions of other members of the endomembrane system. Hence, they are part of the endomembrane system. As they are different organelles, so their functions are also different. Lysosomes digest various substances, while vacuoles facilitate expulsion of waste products from the cell. |
|
| 832. |
What are viroids and prions ? Where are they found and what role they play ? |
|
Answer» Viroids are tiny bits of nucleic acid (single-stranded closed circular DNA) without a protein coat. They have been indentified in plant cell only, where they replicate with the help of host cell enzymes. They are infectious pathogens and cause plant diseases. Prions are tiny protein particles without nucleic acid. They are infectious particles that cause neurodegenerative diseases in animals (human and sheep ). |
|
| 833. |
Which of the following cell organelle is considered to be rich in catabolic enzymes " " Or Respiratory and oxidative enzymes are present in " " Or Highest number of enzyme is found inA. LysosomeB. chloroplastC. mitochondriaD. peroxisomes |
| Answer» Correct Answer - C | |
| 834. |
Which of the following organelle is concerned with generation of ATP through electron transport and oxidative phosphorylation?A. ChloroplastB. MitochondriaC. GlyoxysomeD. Both(1)and(2) |
| Answer» Correct Answer - B | |
| 835. |
Both lysosomes and vacuoles are endomembrane structures, yet they differ in terms of their functions. Comment. |
| Answer» Lysosomes are membrane-bound vesicular structures holding a variety of enzymes such as lipases, proteases, and carbohydrases. The purpose of lysosomes is to digest worn out cells. They are involved in the intracellular digestion of foreign food particles and microbes. Sometimes, they also act as suicidal bags. They are involved in the self digestion of cells. They are a kind of waste disposal systems of a cell. On the other hand, vacuoles are storage sacs found in cells. They might store the waste products of cells. In unicellular organisms, the food vacuole contains the consumed food particles. It also plays a role in expelling excess water and some wastes from the cell. | |
| 836. |
Out of peroxisomes, lysosomes and mitochondria, single membrane covering occurs inA. Both peroxisomes and lysosomesB. Only peroxisomesC. All of the aboveD. Only mitochondria |
|
Answer» Correct Answer - A Single membrane covering occurs in both peroxisomes and lysosomes. |
|
| 837. |
Lysosomes are single membrane bound organelles. Which of the following statements is correct?A. Contain 40-50 types of hydrolytic enzymesB. content has a pH of 8.5C. Membrane is highly prone to self-digestionD. All of the above |
| Answer» Correct Answer - A | |
| 838. |
Eukaryotic cells have organelles which may (a) not be bound by a membrane (b) bound by a single membrane (c) bound by a double membrane |
|
Answer» (a) Cell organelles with no membrane In eukaryotic cell, ribosomes occur freely in the cytoplasmic matrix and are attached to the outer cytoplasmic surface of the rough matrix of mitochondria and stroma of plastids called as mitoribosomes and plastidoribosomes, respectively. (b) Cell organelles with single membrane A lysosome is a tiny sac bounded by a single unit membrane of lipoprotein. The lysosomes occurs in all animal cells and protozoans. Prokaryotic cell lack lysosomes. Number of lysosomes varies with the cell type. Lysosome contain a dense, finely granular fluid consisting of glycoproteinaceous hydrolytic (digestive) enzymes called acid hydrolases. Cell organelles like sphaerosomes and microbodies also possess single membranes. (c) Cell organelles with double membrane Mitochondria are double membrane bound structures with the outer membrane and inner membrane dividing its lumen distinctly into two aqueous compartments. The inner compartment is called the matrix whereas the outer membrane forms the continuous limiting boundary of the organelle. Chloroplast and nucleus are also double membrane bound organelles. |
|
| 839. |
Oxidative phosphorylation isA. Addition of phosphate group to ATPB. Formation of ATP by energy released from elcetrons removed during substrate oxidationC. Formation of ATP by transfer of phosphate group from a substrate to ADPD. Oxidation of phosphate group in ATP |
|
Answer» Correct Answer - B Water soluble pigments found in plant cell vacuoles are anthocyanins. |
|
| 840. |
Which one of the following cell organelles is enclosed by a single membraneA. MitochondriaB. ChloroplastsC. LysosomesD. Nuclei |
|
Answer» Correct Answer - C Lysosomes is enclosed by a single membrane. |
|
| 841. |
Which cell organelles are enclosed by a single unit membrane and which by a double unit membrane ? |
| Answer» E.R., Golgi apparatus, lysosomes, spherosomes, vacuoles, microbodies (peroxisomes, glyoxisomes), thylakoids, cilia and flagella are bound by a single unit membrane , mitochondria, plastids and nucleus are enclosed by 2 unit membranes. | |
| 842. |
Mitochondria and chloroplast are (a) Semi-autonomous organelles (b) Formed by division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery Which one of the following options is correctA. II is true , but I is falseB. I is true , but II is falseC. Both I and II are falseD. Both I and II are true |
|
Answer» Correct Answer - B Mitochondria and chloroplast are semi-autonomous organelles which contains DNA ribosomes (70S), etc. They are capable of self-replication so called semi-autonomous. |
|
| 843. |
Name the cell organelles which are enclosed by multiple of unit membrane. |
| Answer» Mitochondria, chloroplasts, and nucleus. | |
| 844. |
How many of the given organelles have single membrane? Ribosomes, centrioles, nucleolus, lysosomes, peroxisomes, vacuoles, golgi complex, ERA. sixB. fiveC. threeD. four |
| Answer» Correct Answer - C | |
| 845. |
Mitochondria and chloroplast are (a) Semi-autonomous organelles (b) Formed by division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery Which one of the following options is correctA. Both (a) and (b) are correctB. (b) is true and (b) is falseC. (a) is true and (b) is falseD. Both (a) and (b) are false |
| Answer» Correct Answer - C | |
| 846. |
Mitochondria and chloroplast are (a) Semi-autonomous organelles (b) Formed by division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery Which one of the following options is correctA. Both (a) and (b) are correctB. (b) is true but ( a) is falseC. (a) is true but (b) is falseD. Both (a) and (b) are false |
| Answer» Correct Answer - C | |
| 847. |
Mitochondria and chloroplast are (a) Semi-autonomous organelles (b) Formed by division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery Which one of the following options is correctA. (b) is true cut (a) is falseB. (a) is true but (b) is falseC. Both (a) and (b) are falseD. Both (a) and (b) are correct |
| Answer» Correct Answer - B | |
| 848. |
Which one of the following cell organelles is enclosed by a single membraneA. ChloroplastsB. LysosomesC. NucleiD. Mitochondria |
| Answer» Correct Answer - B | |
| 849. |
Select the mismatch :A. Gas vacuoles - Green bacteriaB. Large central vacuole - Animal cellsC. Protists - EukaryotesD. Methanogens - Prokaryotes |
| Answer» Correct Answer - B | |
| 850. |
A cell organelle containing hydrolytic enzymes isA. LysosomesB. MicrosomesC. RibosomeD. Mesosome |
| Answer» Correct Answer - A | |