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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.
| 451. |
List out the functions of chloroplast. |
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Answer» Photosynthesis, photo respiration. |
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| 452. |
Which is the site of light reaction in chloroplast? |
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Answer» Grana (membranes of Thylakoids of grana) |
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| 453. |
What are Frets? |
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Answer» Membranous links interconnecting the grana of the chloroplast are called frets. |
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| 454. |
Differences between plant cell and animal cell. |
Answer»
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| 455. |
What are ribosomes? |
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Answer» Ribosomes are granular structure composed of ribonucleic acid (RNA) and proteins. |
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| 456. |
What are crlstae? |
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Answer» Folds of the inner membranae of mitochondria are called Cristae. |
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| 457. |
Which is the site of dark reaction In Chloroplast? |
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Answer» Stroma is the site of dark reaction In Chloroplast. |
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| 458. |
What is Chromatin? |
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Answer» Darkly stainable thread-like structure found in the nucleus is called chromatin. |
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| 459. |
What is a hub? |
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Answer» The central part of the proximal region of the centrio’s is called as the hub. |
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| 460. |
What is a satellite? |
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Answer» Non staining secondary constrictions at a constant location of chromosomes which appear like a small fragment are called the satellite. |
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| 461. |
What does chromatin contain? |
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Answer» Chromatin contains DNA and some basic proteins called histones, some nonhistone proteins and RNA. |
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| 462. |
Which of the following statements is not true for plasma membraneA. It is present in both plant and animal cellB. Lipid is present as a bilayer in itC. Proteins are present integrated as well as loosely associated with the lipid bilayerD. Carbohydrate is never found in it |
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Answer» Statement is false. Carbohydrates are never found in plasma membrane is not true. The biochemical investigation done on cell membrane clearly demonstrate that the cell membrane possess protein and carbohydrates as biochemical components. The other options stand true for plasma membrane Plasma membrane is present in both plant and animal cells. Lipid is present as a bilayer and lipid component is made of phosphoglycerides (fluid mosaic model by Singer and Nicolson). Proteins are present integrated as well as loosely associated with the lipid bilayer. The ratio of protein and lipid varies considerably in different cell types. |
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| 463. |
What does vacuole contain? |
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Answer» Volume contains water, sap, excretory product and other materials not useful for the cell. |
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| 464. |
Name the membrane around Vacuole, |
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Answer» Tonoplast the membrane around Vacuole, |
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| 465. |
Name the common genetic material. |
| Answer» Correct Answer - DNA. | |
| 466. |
Name any one function of animal cell vacuole. |
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Answer» Osmoregulation (in protozoans). |
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| 467. |
Which of the following is not true of a eukaryotic cellA. Cell wall is made up of peptidoglycansB. It has 80S type of ribosome present in the cytoplasmC. Mitochondria contain circular DNAD. Membrane bound organelles are present |
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Answer» Correct Answer - A A cell wall made up of peptidoglycan is found in bacteria and not in eukaryotes. Eukaryotic cell wall is made up of cellulose hemicellulose, pectin chitin etc. Thus, is not true for eukaryotic cell. In eukaryotes ribosomes present in cytoplasm is of 80S type but the ribosome in mitochondria is of 70S type, which represents the type present in prokaryotic cell. In eukaryotes cell organelles are highly complex and membrane bound and the mitochondria in eukaryotes bear a separate circular DNA. |
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| 468. |
Plasma membrane is made ofA. proteins and carbohydratesB. proteins and lipidsC. proteins , lipids and carbohydratesD. proteins , some nucleic acid and lipids |
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Answer» Correct Answer - C Plasma membrane is living , quasifluid , trilaminar membrane , usually consists of proteins (44-76%) , lipids (20-53%) , water (20%) and carbohydrates (1-8%). |
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| 469. |
What is Tonoplast? |
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Answer» The membrane covering the vacuole is called tonoplast. |
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| 470. |
What are hormones ? |
| Answer» Secretions of endocrine glands. | |
| 471. |
What are Tonoplast? |
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Answer» In plant cells vacuoles are large, bounded by a single unit membrane called Tonoplast. |
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| 472. |
What is a tonoplastA. Outer membrane of mitochondriaB. Inner membrane of chloroplastC. Membrane boundary of the vacuole of plant cellsD. Cell membrane of a plant cell |
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Answer» Tonoplast In plant cell the vacuole in bound by single membrane called tonoplast. The tonoplast facilitates the transport of ions and other material against the concentrat ion gradient into the vacuole. Hence their concentration is higher in the vacoule than in the cytoplasm. The outer membrane of mitochondria is formed of porin proteins and inner membrane bounds of chloroplast the stroma The cell membrane of the plant cell is not a tonoplast. It is simple biological/unit membrane present in every cellular organism. |
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| 473. |
Electron microscope has a high resolution power . This is due toA. electromagnetic lensesB. very low wavelength of electron beamC. low wavelength of light source usedD. high numerical aperture of glass lenses used |
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Answer» Correct Answer - B Resolving power Le, defined as the ability of an optical system or objective lens to distinguish two closely placed points as two distinct separate points. It depends on wavelength of light andnumerical aperture, as limit of resolution `(L_(m)) = (0.61 lambda)/(NA)` in electron by the low wavelength of electrons . |
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| 474. |
Tonoplast is the surrounding membrane ofA. NucleolusB. NucleusC. VacuoleD. Chloroplast |
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Answer» Correct Answer - C Tonoplast is the surroundings membrane of vacuole. |
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| 475. |
The limit of resolution of an instrumentA. varies directly with its resolving powerB. varies inversely with its resolving powerC. is equal to its resolving powerD. is not related to its resolving power |
| Answer» Correct Answer - C | |
| 476. |
The instrument used I spectrophometry isA. spectrophotometerB. microtomeC. tracerD. None of these |
| Answer» Correct Answer - A | |
| 477. |
Prokaryotic flagella is made up of which of the following protein?A. TubulinB. FlagellinC. PilinD. Dynein |
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Answer» Correct Answer - B Prokaryotic flagella is made up of protein flagellin. |
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| 478. |
Flagella of prokaryotic cell areA. single-strandedB. without differentiation of axonemeC. 11-strandedD. Both (a) and (b) |
| Answer» Correct Answer - D | |
| 479. |
Perinulcear space is aroundA. 10 to 20 `A^(o)`B. 10 to 20 nmC. 10 to 50 `mu`mD. 10 to 50 nm |
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Answer» Correct Answer - D Perinuclear space is around 10 to 50 nm. |
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| 480. |
Flagella occur inA. Eukaryotic cellsB. Prokaryotic cellsC. VirusesD. Both A and B |
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Answer» Correct Answer - D Flagella occur in both eukaryotic and prokaryotic cell. |
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| 481. |
Shape of choloroplast in higher plant isA. DiscoidB. Girdle-shapedC. ReticulateD. Cup-shaped |
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Answer» Correct Answer - A Shape of chloroplast in higher plant is discoid. |
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| 482. |
Define Cell shape? |
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Answer» Cell Shape : Cells are of variable shapes and sizes. Their shape is according to the function. Generally cells are spherical but they may be elongated (nerve cell), branched (pigmented), discoidal (RBC), spindle-shaped (muscle cell) etc. |
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| 483. |
Define Cell wall. |
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Answer» Cell Wall • It is the outermost covering of the plant cells. • It is absent in animal cells. • Cell wall is rigid, strong, thick, porous and non-living structure. It is made up of cellulose and hemicelluloses. Cell walls of two adjacent cells are joined by a layer called middle lamellae. |
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| 484. |
Define Hypotonic Solution. |
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Answer» Hypotonic Solution : When the concentration of the solution outside the cell is lesser than that of cytoplasm of cell. Due to this, cell swells up and bursts. |
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| 485. |
Define Hypertonic Solution. |
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Answer» Hypertonic Solution : When the concentration of the solution outside the cell is more than the inside the cell. Due to this, cell looses water and becomes plasmolysed. |
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| 486. |
The fruit softens and ripens due toA. conversion of starch from sugarB. jelly formation of an acid pHC. incorporation of pectate in the middle lamellaD. dissolution of middle lamella |
| Answer» Correct Answer - D | |
| 487. |
Golgi apparatusA. modifies and packages proteinsB. occur in animals onlyC. is found in prokaryotesD. is site for rapid ATP synthesis. |
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Answer» Correct Answer - A Golgi apparatus modifies and packages proteins. |
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| 488. |
Which of the following is the simplest amino acid ?A. AlanineB. AsparagineC. GlycineD. Tryosine |
| Answer» Correct Answer - C | |
| 489. |
Which statement is not correct with reference to mitochondria?A. They divide in synchrony with cell cycleB. They contain DNAC. They contain cristaeD. They store and release chemical energy |
| Answer» Correct Answer - A | |
| 490. |
Which statement is not correct with reference to mitochondria?A. They divide in synchrony with cell cycleB. They contain DNAC. They contain cristaeD. They provide chemical energy |
| Answer» Correct Answer - A | |
| 491. |
What is the role of cytoskeleton in the cell?A. MotilityB. Mechanical supportC. Maintenance of the shape of the cellD. All of the above |
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Answer» Correct Answer - D The role of cytoskeleton in the cell motility, mechanical support and maintenance of the shape of the cell. |
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| 492. |
Chlorophyll in chloroplasts is located inA. GranaB. PyrenoidC. StromaD. Both grana and stroma |
| Answer» Correct Answer - A | |
| 493. |
In chloroplasts the chlorophyll is located inA. granaB. pyrenoidC. stromaD. both (a) and (c) |
| Answer» Correct Answer - A | |
| 494. |
In chloroplasts the chlorophyll is located inA. StromaB. GranaC. PyrenoidD. Both A and B |
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Answer» Correct Answer - B In chloroplasts is located in grana. |
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| 495. |
In chloroplasts, chlorophyll is present in theA. outer membraneB. inner membraneC. thylakoidsD. stroma |
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Answer» Correct Answer - C The thylakoids of chloroplast are flattenedvesicles arranged as a membranous networkwithin the stroma. 50% of chloroplast proteins andvarious components involved (namely chlorophyll, carotenoids and plastoquinone) are present in thylakoid membranes that are involved in photosynthesis. |
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| 496. |
Extra nuclear inheritance is a consequence of presence of genes inA. mitochondria and chloroplastsB. endoplasmic reticulum and mitochondriaC. ribosomes and chloroplastD. lysosomes and ribosomes |
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Answer» Correct Answer - A Extra nuclear or extra chromosomal orcytoplasmic or organellar inheritance is a consequence of presence of genes in mitochondria and chloroplast. Extra chromosomal units function either independently or in collaboration with nuclear.genetic system. |
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| 497. |
Extra nuclear inheritance is a consequence of presence of genes inA. BlueB. GreenC. YellowD. Red |
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Answer» Correct Answer - A Resolving power or resolution is the ability ofthe lens to distinguish fine details and structure.Specifically, it refers to the ability of the lensei:, todistinguish between two points a specifieddistance apart. Resolving power depends on two factors : (a) Wavelength of light used for illumination. (b) Power of objective lenses. Resolving power = `("Wavelength of light")/(2 xx NA)` Since, the limit of resolving power of a microscope is fixed by the structure of light, the shortest wavelength of visible light will give the maximum resolution . Among yellow, green, red and blue light colour. Blue (500 nm) have shortest wavelength so, it will give best resolution. |
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| 498. |
Extra chromosomal DNA occurs inA. MitochondriaB. RibosomesC. NucleusD. Chromosomes |
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Answer» Correct Answer - A Extra chromosomal DNA occurs in mitochondria and chloroplast. |
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| 499. |
Cell drinking is also known asA. endocytosisB. pinocytosisC. facilitated transportD. phagocytosis |
| Answer» Correct Answer - B | |
| 500. |
Electron microscope is used forA. counting microbes in a sampleB. whole mount studyC. separating constituents of mixtureD. veiwing ultrastructure of the cell |
| Answer» Correct Answer - D | |