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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.
| 13701. |
In page preview mode:-A. You can see all pages of your documentB. You can only see the page you are currently workingC. You an only see pages that do not contian graphicsD. You can only see the title pageof your document |
| Answer» Correct Answer - A | |
| 13702. |
A collectio of hardware and/or software intended to protect a computer or computer network from unauthorized access is called__________A. MalwareB. BotnetC. WormD. Firewall |
| Answer» Correct Answer - D | |
| 13703. |
When a chart is placed on this, it is much larger and there is no other data on itA. chart sheetB. exclusive sheetC. primary sheetD. reference sheet |
| Answer» Correct Answer - A | |
| 13704. |
In word, the feature that automatically detects common erros is calledA. AutocorretB. AutographC. Spelling and GrammarD. Go to |
| Answer» Correct Answer - A | |
| 13705. |
In word you can force a page break_______.A. By positioning your cursor at the appropriate plae and pressing the F1 keyB. By positioning your cursor at the appropriate place and pressing Ctrl+EnterC. By using the insert/section breakD. by changing the font size of your document |
| Answer» Correct Answer - B | |
| 13706. |
Computers used the_______number systems to store data and perform calculationsA. binaryB. octalC. decimalD. hexadecimal |
| Answer» Correct Answer - A | |
| 13707. |
Which of the following software could assist someone who cannot use their hands for computer input?A. Video conferencingB. Speech recognitionC. Audio digitizerD. synthesizer |
| Answer» Correct Answer - B | |
| 13708. |
Information that comes from an external source and fed into computer software is calledA. OutputB. InputC. ThroughputD. reports |
| Answer» Correct Answer - B | |
| 13709. |
Which of the following terms refers to the ability of a computer to automatically configure a new hardware component that is added to it?A. FormattingB. MultiprocessingC. MultiprogrammingD. plug and play |
| Answer» Correct Answer - D | |
| 13710. |
Tangible, physical computer equipment that can be seen and touched is called_________A. hardwareB. softwareC. storageD. input/output |
| Answer» Correct Answer - A | |
| 13711. |
The default view in Excel is___view.A. WorkB. AutoC. NormalD. roman |
| Answer» Correct Answer - C | |
| 13712. |
The ability to exhange information through the use of computer equipment and software is:-A. Data entryB. The internetC. Data retrievalD. Electronic communication |
| Answer» Correct Answer - D | |
| 13713. |
Mark the wrong statementA. Wrought iron is prepared by heating cast iron in a reverberatory furnaceB. The impurity present in cast iron are oxidised by airC. The impurities are oxidised by `Fe_(2)O_(3)`D. `CO`burns with blue flame and the `Si, Mn` and other impuritites from slag with silica |
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Answer» Correct Answer - B The wrong statement is that the impurities present in cast iron are oxidised by air. |
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| 13714. |
Ms Excel is used for?A. Letter writingB. Spread sheet calculationC. PresentationD. painting |
| Answer» Correct Answer - B | |
| 13715. |
Desktop and personal computer are also known as:A. supercomputersB. serversC. mainframes peripheral equipmentD. microcomputers |
| Answer» Correct Answer - D | |
| 13716. |
Assertion: In forth floatation method, sodium ethy`1` xaanthetae is used as a collector. Reason: It helps the sulphide ore to collect on the air bubble.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reason is false.D. If assertion is false but reason is true. |
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Answer» Correct Answer - A `C_(2)H_(5)-O-underset(("Collector"))overset(O)overset(||)C-S^(-)` |
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| 13717. |
Computer users who are not computer professionals are sometimes called:A. Peripheral usersB. ProgrammersC. LibrariansD. end-users |
| Answer» Correct Answer - D | |
| 13718. |
Assertion: Sulphide ores of `Zn`and `Pb` are generally converted into their respective oxides, prior to reduction. Reason: The zinc oxide and lead oxide are reduced by carbon to their respective free metals.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reason is false.D. If assertion is false but reason is true. |
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Answer» Correct Answer - A Assertion: The Gibbs energies of formation of most sulphide are greater than that for `CS_(2)`.In fact, `CS_(2)` is an endothermic compound. There, the `Delta_(f) G^(Theta)` of `M_(x) S` is not compensated. So reduction `M_(x)S` is difficult. Hence it is common practice to roast sulphide ores to corresponding oxides prior to reduction. Reason: `ZnO+C overset(Delta) vrarr Zn +CO`, `PbO+C overset(Delta)rarr Pb +CO` (carbon reuction) |
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| 13719. |
______controls the way in which the computer system functions and provides a means by which users can interact with the computer.A. The operating systemB. The motherboardC. The platformD. application software |
| Answer» Correct Answer - A | |
| 13720. |
Match the extraction processes listed in column `-I` with metals listed in column`-II` and choose the correct option. `{:("Column"-I,,"Column"-II),((a)"Self reduction method",,(p)"Aluminium from bauxite"),((b)"Carbon reduction method",,(q)"Mercury from cinnabar"),((c )"Electrolytic reduction method",,(r) "Zinc from zinc blende."),((d)"Cyanide process",,(s)"Silver from agentite"):}`A. `a-q,b-r,c-p,d-s`B. `a-r,b-q,c-p,d-s`C. `a-q,b-r,c-s,d-p`D. `a-q,b-p,c-r,d-s` |
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Answer» Correct Answer - 1 `(a)HgS+O_(2)overset("self reduction")rarrHg+SO_(2)` `(b)2ZnS+3O_(2)overset(Delta)rarr 2ZnO+SO_(2)` `ZnO+Coverset("carbon reduction")rarrZn+CO` `(c )` `Al_(2)O_(3)(m)underset("reduction")overset("electrolyte")rarr Al(m)" "(d)Ag_(2)Sunderset("process")overset("cyanide")rarr Ag` |
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| 13721. |
Enzyme lactase is responsible for the breakdown of lactose intoA. Glucose + FructoseB. Glucose + GalactoseC. Glucose + GlucoseD. Fatty acids + Glycerol |
| Answer» Correct Answer - A | |
| 13722. |
Enzyme lactase is found in ______________(a) nucleus(b) ribosome(c) plasma membrane(d) golgi complex |
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Answer» The correct answer is (c) plasma membrane The explanation: The enzyme lactase is responsible for hydrolyzing lactose. It is found in the plasma membrane of cells lining the walls of the intestine. |
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| 13723. |
In an amino acid, the carboxyl group and amino group are separated from each other by a single ____________ atom.(a) nitrogen(b) sulphur(c) hydrogen(d) carbon |
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Answer» Correct answer is (d) carbon Explanation: Proteins are polymers containing amino acids as monomers. There are twenty different types of amino acids, with varying functional groups. Every amino acid has a carboxyl group and an amino group separated by a single carbon atom between them. |
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| 13724. |
The concept of transmembrane proteins was obtained from the results of which technique?(a) Freeze-fraction replication(b) Freeze-fracture replication(c) Fraction replication(d) None of the mentioned |
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Answer» The correct option is (b) Freeze-fracture replication The explanation: The concept that transmembrane proteins penetrate through the membrane was obtained from the results of freeze-fracture replication. In this procedure, a frozen solid tissue is fractured with a knife blade and metals are deposited on their exposed surfaces to form shadowed replica. This is viewed under electron microscope and it looks like a path strewn with pebbles, called as membrane-associated particles. |
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| 13725. |
GPI- anchored proteins show particular affinity towards ________(a) Cholesterol(b) Hydrophobic tail(c) Lipid rafts(d) Phosphatidylserine |
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Answer» The correct choice is (c) Lipid rafts The explanation is: Cholesterol and sphingolipids tend to self-assemble into microdomains highly ordered than surrounding lipid of cell membrane. Microdomains float within the fluid environment and are known as lipid rafts. Some proteins tend to become concentrated in the ordered microdomains and others remain outside the boundaries. GPI- anchored protein show particular fondness towards the microdomains. |
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| 13726. |
Which of the following is an important end product of disassembly of fatty acids?(a) Acetyl CoA(b) Succinate dehydrogenase(c) Pyruvate(d) DNA gyrase |
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Answer» Right answer is (a) Acetyl CoA Best explanation: The metabolites of TCA cycle are also the same compounds generated by other catabolic processes in the cell. For instance, Acetyl CoA is also an important end product of disassembly of fatty acids. |
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| 13727. |
How many carboxyl groups are present in fatty acids?(a) 1(b) 2(c) 3(d) 4 |
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Answer» The correct answer is (a) 1 The explanation is: Fatty acids are long chain hydrocarbons containing only one carboxyl group at the end of the molecule. Three fatty acid chains link up via ester bonds to a glycerol molecule to form triacylglycerol. The hydrocarbon chain of fatty acids is hydrophobic and the carboxyl group is hydrophilic. |
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| 13728. |
The mobility of integral proteins can be measured by physical state of the ______________(a) amino acids(b) external phospholipids(c) membrane phospholipids(d) membrane appendages |
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Answer» The correct option is (c) membrane phospholipids Explanation: Since integral proteins are embedded in the phospholipid bilayer of the membrane, the mobility of the integral proteins is determined largely by the physical state of membrane phospholipids. |
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| 13729. |
GLUT1 is an example of ______________(a) Channel protein(b) Facilitative transporter(c) Active transporter(d) Lipid-anchored protein |
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Answer» Correct choice is (b) Facilitative transporter For explanation I would say: Humans consist of membrane-spanning proteins that help in the transport of glucose molecules through the cell membrane. These molecules have five isoforms from GLUT1 to GLUT5. It facilitates the diffusion of glucose from the bloodstream into the cell through facilitated diffusion. |
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| 13730. |
Glycophorin is involved in which of the following disease?(a) viral fever(b) common cold(c) asthma(d) malaria |
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Answer» The correct option is (d) malaria Easiest explanation: Glycophorin is the receptor utilized by the protozoan that causes malaria, providing a path for entry into the blood cells. Consequently, those who lack glycophorin A and B are immune against the disease. |
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| 13731. |
Transmembrane domain of a transmembrane protein is present as _______________(a) Alpha-helix(b) Beta-sheet(c) Triple beta-sheet(d) None of the mentioned |
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Answer» Right answer is (a) Alpha-helix To explain I would say: Transmembrane proteins extend on both sides of the membrane and are present mostly as alpha helices and clusters of helices called the Helical bundle. Some proteins are also present as beta barrel. They are made up of beta sheets that rolls up into a tube like shape. |
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| 13732. |
Greater degree of unsaturation in fatty acids of cell membrane _________(a) Lowers the transition temperature(b) Raises the transition temperature(c) Has no effect on transition temperature(d) Doubles the transition temperature |
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Answer» Correct choice is (a) Lowers the transition temperature Explanation: The lipid is converted from a liquid crystalline phase to a frozen crystalline phase. The temperature at which this change occurs is called transition temperature. The greater degree of unsaturation in fatty acids lower the transition temperature and it quickly achieves the crystalline frozen state due to high unsaturation. |
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| 13733. |
Which part of cholesterol molecule is not embedded in the lipid bilayer?(a) Hydroxyl end of cholesterol(b) Entire molecule of cholesterol(c) Hydrophobic rings(d) Hydroxyl end and ^1⁄4th of the hydrophobic rings |
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Answer» Correct answer is (a) Hydroxyl end of cholesterol The best explanation: Cholesterol molecules are oriented with their small hydrophilic hydroxyl groups toward the membrane surface and the remainder of molecule embedded in lipid bilayer. The hydrophilic rings of a cholesterol molecule are flat and rigid and interfere with the fatty acid tails of phospholipids. |
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| 13734. |
The phosphoglycerides in cell membrane are of the _________ type.(a) Triglyceride(b) Diglyceride(c) Monoglyceride(d) Polyglyceride |
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Answer» The correct option is (b) Diglyceride To elaborate: Membrane glycerides, which contain a phosphate group has two fatty acids. Therefore, they are phosphor-diglycerides. Only two of the hydroxyl groups of the glycerol are esterified to a hydrophilic phosphate group. |
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| 13735. |
What is the chemical formula for oxaloacetic acid?(a) C4H3O5(b) C4H4O5(c) C4H4O6(d) C3H4O5 |
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Answer» Correct option is (b) C4H4O5 Explanation: The oxaloacetic acid is formed when phosphoenolpyruvate reacts with CO2. This is the first product of the pathway which is a four carbon compound. |
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| 13736. |
Lipid rafts are ___________(a) Patches of glycoproteins in the lipid bilayer(b) Patches of cholesterol and sphingolipids in lipid bilayer(c) Patches of only cholesterol in lipid bilayers(d) Detached patches of proteins floating on the lipid bilayer |
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Answer» Right option is (b) Patches of cholesterol and sphingolipids in lipid bilayer Explanation: When membrane lipids are extracted from cell and used to produce artificial lipid bilayers, cholesterol and sphingolipids tend to self-assemble into microdomains highly ordered than surrounding lipid. Microdomains float within the fluid environment and are known as lipid rafts. |
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| 13737. |
The information is forwarded from the neuron through which part?(a) axon(b) soma(c) dendrites(d) nucleus |
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Answer» Right option is (a) axon The explanation is: Axon is a single prominent extension that emerges from the cell body and is responsible for conducting outgoing impulses away from the cell and towards other cells. |
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| 13738. |
A neuron fires when _____________________(a) action potential is achieved(b) apoptosis is induced(c) re-stimulation occurs(d) stimulation ceases |
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Answer» Correct answer is (a) action potential is achieved Easy explanation: When the external stimulation is strong enough to reach the threshold value which is around -50 mV, the action potential is generated, and firing of the neurons occurs. This is actually the response to stimulus. |
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| 13739. |
Energy transduction is the underlying process of which of the following?(a) DNA(b) Transcription(c) Translation(d) Photosynthesis |
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Answer» Correct option is (d) Photosynthesis To elaborate: Energy transduction is the conversion of one form of energy to another. In photosynthesis, the energy in sunlight is absorbed by the membrane bound photosynthetic pigments, converted into chemical energy and then stored as carbohydrates. |
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| 13740. |
The use of optical tweezers in membrane biology was done to confirm the ________________ nature of membranes.(a) self-replicating(b) elastic(c) inelastic(d) photo-responsive |
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Answer» Correct choice is (b) elastic The best I can explain: The integral membrane proteins are tagged with antibody-coated beads that provide for handles that can be gripped by laser beam. The experiments concluded that membrane barriers are elastic in nature. |
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| 13741. |
Which of the following has the highest permeability in a resting nerve cell?(a) Na^+(b) Cl^–(c) I^–(d) K^+ |
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Answer» Correct answer is (d) K^+ The best I can explain: K^+ has the highest permeability in resting nerve cells. Most of the ion channels open in the membrane of a resting nerve cell are selective for potassium, referred to as potassium leak channels. |
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| 13742. |
The inner boundary membrane and inner cristal membrane are joined by ____(a) Mitochondrial junctions(b) Membrane junctions(c) Cristae junctions(d) Tubule junctions |
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Answer» The correct choice is (c) Cristae junctions To explain I would say: The inner boundary membrane and internal cristal membranes in the mitochondria are joined to one another by narrow tubular connections known as cristae junctions. The cristae are internal protrusions that hold the respiratory mechanism important for cellular respiration. |
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| 13743. |
The first insights into the chemical nature of plasma membranes date back to __________(a) 1700(b) 1790(c) 1800(d) 1890 |
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Answer» The correct answer is (d) 1890 For explanation: The first insights into the chemical nature of cell membrane came from Ernst Overton of the University of Zürich during the 1890s. He stated that a substance entering the cell would first have to dissolve in the boundary layer of the cell. |
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| 13744. |
One of the main functions of plasma membranes is to enclose the contents of _____________(a) cell(b) organism(c) bones(d) tissue |
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Answer» Right choice is (a) cell Best explanation: The main function of the plasma membrane is compartmentalization, to enclose all the organelles of the cell and thereby separate them from external hydrophilic environment. |
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| 13745. |
Which is the first membrane protein to have its amino acid sequence determined?(a) Glycophorin A(b) Glycophorin B(c) Glycophorin C(d) Glycophorin D |
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Answer» Right answer is (a) Glycophorin A The best I can explain: Glycophorin A is the first membrane protein to have its amino acid sequence determined. Other glycophorins are present in lesser amount in the membranes. Glycophorin A has carbohydrates attached that account for 60% of its weight. |
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| 13746. |
Which of the following is not a component of cell membranes?(a) Phosphodiglycerides(b) Sphingolipids(c) Cholesterol(d) Phosphotriglycerides |
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Answer» Correct option is (d) Phosphotriglycerides The explanation is: Phospholipids present in cell membrane are diglycerides and not triglycerides. Triglycerides have three fatty acids and are not ampipathic in nature. It also consists of sphingolipid and cholesterol. |
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| 13747. |
On which of the following organisms, the research on nerve cells was first carried out?(a) Drosophila melanogaster(b) Grasshopper(c) Giant squid(d) Octopus |
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Answer» Right option is (c) Giant squid For explanation: The first research on action potential and nerve impulses was carried on the axons of giant squid in the late 1940s and early 1950s by Alan Hodgkin, Andrew Huxley, and Bernard Katz. |
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| 13748. |
Which of the following can not be used to mediate the fusion of plasma membranes of two different cells?(a) electric shock(b) inactivated viruses(c) Polyethylene glycol(d) emulsifier |
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Answer» The correct choice is (d) emulsifier For explanation: There are various techniques that can be used to fuse two different cells and all of these are basically used to either modify the surface of plasma membrane or attach to it (inactivated viruses). Emulsifiers however do neither and are hence not used in cell fusion. |
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| 13749. |
Mycobacterium tuberculosis inhibits the fusion of its phagosome with _________________ following phagocytosis.(a) membrane(b) lysosome(c) endosome(d) chromosome |
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Answer» The correct option is (b) lysosome The best I can explain: Mycobacterium tuberculosis is the agent responsible for tuberculosis. Following its phagocytosis, the bacterium inhibits the fusion of phagosome with the lysosome, preventing its deactivation in the cell. |
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| 13750. |
What is the key role of fibroblasts?(a) Protecting the cell(b) Producing extracellular matrix(c) Producing lytic enzymes(d) Providing structure |
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Answer» Right answer is (b) Producing extracellular matrix Best explanation: Fibroblast cells are responsible for producing collagen and the ECM of the tissues in animals. They synthesize numerous different enzymes and play a key role in wound healing and scab formation. |
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