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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.
| 801. |
Functuons of liver |
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Answer» 1.Emulsification of fats 2. Provide alkaline medium for action of pancreatic enzymes Liver secretes bile that helps in emulsification of fats |
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| 802. |
Give the various types of pigment in red,brown and green algae |
| Answer» Red alga-chlorophyll a & d; phycoerythrin; phycocyanin Brown alga-chl a &c; fucoxanthin; beta carotenesGreen - chl a &b; xanthophyll; carotenes | |
| 803. |
What is lingual tonsil? |
| Answer» The lingual tonsils are two small mounds of lymphatic tissue located at the back of the base of the tongue, one on either side. They are composed of lymphatic tissue that functions to assist the immune system in the production of antibodies in response to invading pathogenic bacteria or viruses. | |
| 804. |
Describe cell cycle |
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Answer» The ordered sequence of events that occur in a cell in preparation for cell division. The cell cycle is a four-stage process in which the cell increases in size ,copies its DNA , prepares to divide and divides . The sequence of events leading to duplication of genome , synthesis of contituent of cells. And finally parent cell dividing into 2 daughter cells. I want describtion full Describe shortly plzz Cell cycle is the sequential event of stages in which cell takes part in many phases for division like dna replication, genome duplication etc |
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| 805. |
Explain how amonia is used to synthesize ammonia in simply plants with will balanced equation ? |
| Answer» To\xa0produce\xa0the desired end-product\xa0ammonia, the hydrogen is then catalytically reacted with nitrogen (derived from process air) to form anhydrous liquid\xa0ammonia. This step is known as the\xa0ammonia\xa0synthesis loop (also referred to as the Haber-Bosch process): 3H2\xa0+ N2\xa0→ 2NH.\xa0Due to the comparatively low price, high availability, easy processing, lifespan and activity,\xa0iron\xa0was ultimately chosen as catalyst. The production of for example 1800 tons ammonia per day requires a gas pressure of at least 130 bar, temperatures of 400 to 500 °C and a reactor volume of at least 100 m³. | |
| 806. |
Vital respiration? ??? |
| Answer» ?\u200d♂️see in ncert book of biology | |
| 807. |
Explain ETS |
| Answer» When 680nm light is provided to PSll the electron in it get excited & jump to an orbital farther from it & accepted by a e- acceptor. When the intensity of light reaches 700nm, the e- from e- acceptor transferred to PSl. The e- in PSI get excited & finally received by NADP+. The e- moves throughout the process with the help of e- transporter. Hence the movement of e- is controlled by electron transport system (ETS). | |
| 808. |
Modification of leaf |
| Answer» 1. Storage Leaves: Some plants of xerophytic habitats and members of the family Crassulaceae generally have highly thickened and succulent leaves with water storage tissue. These leaves have large parenchymatous cells with big central vacuole filled with hydrophilic colloid. This kind of adaptation helps plants to conserve very limited supply of water and resist desiccation (drying up).2. Leaf Tendrils: In weak- stemmed plants, leaf or a part of leaf gets modified into green thread\xadlike structures called tendrils which help in climbing around the support.3. Leaflet Hooks: In Bignonia unguiscati the three terminal leaflets of leaf get modified into claw like hooks which help in climbing .4. Leaf Roots: In case of Salvinia three leaves are present at one node. Out of these two leaves are normal and third gets modified into adventitious roots which help in floating over the surface of water\xa0 | |
| 809. |
name the hormone that makes the plant more tolerant to various stresses? |
| Answer» Abscisic acid is called stress hormones as it induces various responses in plants against stress conditions.It increases the tolerance of plants toward various stresses. It induces the closure of the stomata during water stress. It promotes seed dormancy and ensures seed germination during favourable conditions. It helps seeds withstand desiccation. It also helps in inducing dormancy in plants at the end of the growing season and promotes abscission of leaves, fruits, and flowers. | |
| 810. |
Write family curciferae(old name) or brassiaceal( new name) . Comman name=Mustard family |
| Answer» Brassicaceae or Cruciferae\xa0is a medium-sized and economically important family of flowering plants commonly known as the mustards, the crucifers, or the cabbage family. Most are herbaceous plants, some shrubs, with simple, although sometimes deeply incised, alternatingly set leaves without stipules or in leaf rosettes, with terminal inflorescences without bracts, containing flowers with four free sepals, four free alternating petals, two short and four longer free stamens, and a fruit with seeds in rows, divided by a thin wall (or septum). | |
| 811. |
what is guttation? explain clearly |
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Answer» The process of exudation of liquid drop from the edge of leaf is called guttation .It is occurs threw stomata like core called hydrathods.Exudation may sometime occur from stem threw the scar of leaf and lenticles . It is the process by which fully turgid plant remove extra water . The executation of water droplets mainly droplets of oxygen on the tip of plants like herbs and grass at low temperature due to increased root preddure and low transpirational rate... |
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| 812. |
Explain the composition of triglycerides |
| Answer» When fatty acids are found esterified with glycerol, they are called glycerides. Presence of three esterified bonds makes them triglycerides.In this figure, the left side is composed of glyceride. The right side is composed of palmitic acid, ocleic acid and alpha-linolenic acid; from top to bottom. | |
| 813. |
Properties of enzymes |
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Answer» No Do you belong from Punjab |
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| 814. |
How are glycosidic bonds formed? |
| Answer» Glycosidic bond is the bond that joins the monosaccharide units in a polysaccharide chain. the bond is formed between two adjacent monosaccharide units and it involves dehydration. When a base (Purine or pyrimidine) is attached to D-ribose or deoxyribose, is formed nucleoside.A nitrogen atom at 9th position of Purine base and nitrogen atom at 1st position of pyrimidine base is linked to carbon 1st position of deoxyribose or ribose by N-glycosidic linkage. | |
| 815. |
Biology sample paper |
| Answer» | |
| 816. |
Strongest bone in human body ? |
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Answer» It\'s femur bone.... Femur bone Jaw bone |
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| 817. |
What are the function of major proteins? |
| Answer» \tEnzymes: Enzymes mostly carry out all numerous chemical reactions which take place within a cell. They also help in regenerating and creating DNA molecules and carry out complex processes.\tHormones: Proteins are involved in the creation of various types of hormones which help in balancing the components of the body. For example hormones like insulin, which helps in regulating blood sugar and secretin. It is also involved in the digestion process and formation of digestive juices.\tAntibody: Antibody also known as an immunoglobulin. It is a type of protein which is majorly used by the immune system to repair and heal the body from foreign bacteria. They often work together with other immune cells to identify and separate the antigens from increasing until the white blood cells destroy them completely.\tEnergy: Proteins are the major source of energy that helps in the movements of our body. It is important to have the right amount of protein in order to convert it into energy. Protein, when consumed in excess amounts, gets used to create fat and becomes part of the fat cells. | |
| 818. |
What is zwitterionic form |
| Answer» The PH of which hydrogen ion of carboxyl group removes and added to the amino group that PH is called isoelectric PH and the state of amino acid is called zwitterionic form | |
| 819. |
Why leg haemoglobin is called oxygen scavenger |
| Answer» The reason is that leghaemoglobin binds with oxygen without allowing it to move. The process of node formation will get affected due to oxygen so leghaemoglobin is present. | |
| 820. |
Does anyone has a good diagram for meiosis?? |
| Answer» | |
| 821. |
Excreation system |
| Answer» The excretory system consists of the organs that remove metabolic wastes from the body. In humans, this includes the removal of liquid nitrogenous waste in the form of urine, and solid wastes especially from the breakdown of hemoglobin. The removal of urine is accomplished by the urinary tract, while solid wastes are expelled through egestion from the large intestine. | |
| 822. |
, what is growth curve? |
| Answer» A growth curve is an empirical model of the evolution of a quantity over time. Growth curves are widely used in biology for quantities such as population size or biomass, individual body height or biomass. Values for the measured property can be plotted on a graph as a function of time;\xa0Two types\xa0of population growth patterns may occur depending on specific environmental conditions: An exponential growth pattern (J curve) occurs in an ideal, unlimited environment. A logistic growth pattern (S curve) occurs when environmental pressures slow the rate of growth. | |
| 823. |
What are the specific features find in the parasitic Platyhelminthes |
| Answer» Taenia (Tapeworm) and Fasciola (liver fluke) are examples of parasitic platyhelminthes.Peculiar features in parasitic platyhelminthes are as follows.1. They have dorsiventrally flattened body and bear hooks and suckers to get attached inside the body of the host.2. Their body is covered with thick tegument, which protects them from the action of digestive juices of the host.3. The tegument also helps in absorbing nutrients from the host’s body. | |
| 824. |
Define plasmodesmata |
| Answer» A connection between adjacent cells or canal is present between two cells is called as plasmodesmata | |
| 825. |
Heyy tell me asap which ch should i do first MORPHOLOGY or ANATOMY ??? |
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Answer» Morphology Morphology ??? Thanks a lot yakshi i am glad someone did answer i appreciate that ❤️? In morphology there are many terms which are needed to be learnt than understanding concepts while in anatomy there is requirement of understanding concepts.....well...i think u should learn morphology first.....because it will take time and then anatomy....hope it will help u??? |
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| 826. |
What is buccal cavities |
| Answer» Cavity located in the mouth and it secret saliva, which digest the carbohydrates partially. It is an endocrine as it secret into duct called salivary duct | |
| 827. |
What are nuclear pores? |
| Answer» Nuclear pores are pores in nuclear membrane. They are are formed by the fusion of its two membranes.Functions of nuclear pores :1. The materials are exchanged between cytoplasm and nucleus through nuclear pores.2. The proteins are passed in and out of the nucleus through nuclear pores.3. The enzymes for synthesis of DNA and RNA are passed into nucleus through nuclear pores.4. Ribosomal subunits and RNA are passed out from nucleus via nuclear pores.5. m RNA and t RNA are passed out into cytoplasm via nuclear pores. | |
| 828. |
Plz tell me anyone.....that is cuscuta a parasite or the host in case of haustorial roots....... |
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Answer» Its ok Riya.....Thank u for ur answer... Actually, it\'s parasite....?? Sorry Ishita actually I was not online for 5 or 6 days ....... So I could no answer u....?? Thank u very much Gaurav?? Cuscuta is called parasite because it derives valuable nutrients and deprives the host plant from them. Ankit,Ayushi,Yogita,Riya....plz answer anyone Plz explain its urgent.....??? |
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| 829. |
Explain the calvin cycle |
| Answer» | |
| 830. |
why growth is called irreversable process? |
| Answer» When u will become adult.....will it be possible to get u back to ur childhood!!!???? We can\'t reverse our growth so it\'s irreverible | |
| 831. |
Why our stomach is of J shape? |
| Answer» Depending on the position of your body and the amount of food inside it, your\xa0stomach\xa0is capable of alterations in\xa0size\xa0and shape. Your empty\xa0stomach\xa0is about 12 inches long. At its widest point, it\'s about 6 inches across.The\xa0stomach\xa0is\xa0a J-shaped\xa0organ that lies between the esophagus and the small intestine. It has three main functions: Stores ingested food and releases it into the small intestine at\xa0a\xa0rate that is optimal for digestion and absorption. | |
| 832. |
Can someone plz explain me what is Diffusion pressure deficit? (DPD) |
| Answer» Diffusion pressure deficit (DPD) : It is the decrease in diffusion pressure of water in a solution over its pure state.The diffusion pressure of pure water is maximum and it continues to decrease as more and more solute is added into it.D.P.D = O.P - T.PWhere, D.P.D. = Diffusion pressure deficitO.P = Osmotic pressureT.P = Turgor pressure | |
| 833. |
Why fats are called macromolecules?? |
| Answer» fats are called macromolecules because they are one type of lipid I.e they are triglycerides | |
| 834. |
Difrentiate between light and dark reaction |
| Answer» \tLight reactionDark reactionRequires presence of lightDoes not require presence of lightOccurs in thylakoid membranes of grana and stroma lamellaeOccurs in stroma of chloroplastsInvolves absorption of light energy and its conversion into chemical energy in the form of ATP and NADPH + H+Utilises ATP and NADPH2 for the fixation and reduction of CO2\xa0to form carbohydrates.Also called photochemical reaction or Hill reaction.Also called biosynthetic phase or Blackman’s reaction or carbon dioxide fixation or Calvin cycle.\t\xa0 | |
| 835. |
Describe cohesion theory |
| Answer» The theory for the ascent of sap is known as the cohesion-tension-transpiration pull theory. It has two main points-1.The water molecules are attracted to each other due to cohesion which forms a continuous channel. Water molecules are also attracted by xylem elements due to adhesion. So cohesive and adhesive forces are responsible to form a continuous channel between roots and the leaves.2.Due to loss of water by transpiration, the pulling force(transpiration pull) is developed that causes water to move in the upward direction. | |
| 836. |
what is addition disease |
| Answer» | |
| 837. |
What is a G phase |
| Answer» G mean growth phase 2 growth accur in cell cycleG1&G2another also there i.e G0 phase | |
| 838. |
What is sphincter |
| Answer» Sphincter muscle are\xa0circular\xa0muscle\xa0which\xa0have ability to\xa0contract\xa0and relax over a body\xa0opening\xa0to maintain the closure and opening of\xa0that\xa0particular\xa0opening\xa0in the body.\xa0Example: Sphincter muscles\xa0present\xa0on the **** regulates the opening and closure of ****. | |
| 839. |
What is e.c.g. and their uses. |
| Answer» ECG. Is tracing of the cardiac cycle (heartbeat)consist of a P wave a QRS complex a T wave and a U wave . The baseling voltage of the electrocardiogram is known as isoelectric line. | |
| 840. |
What is cephalization?? |
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Answer» Welcome Thanks?? The process of concentration of nerves tissue over one side of an organism is known as cephalization |
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| 841. |
What is guttation?? |
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Answer» Thanku ?? Guttation\xa0is the process of secreting water droplets from the pores of some vascular plants like grass.\xa0Guttation\xa0is often confused with dew droplets that condense from the atmosphere on to the plants surface. |
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| 842. |
Describe Kranz anatomy. |
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Answer» Thanks?? Kranz anatomy is the special arrangement of the cells found in the C4 plants.The characteristics of Kranz anatomy are:\tThe bundle sheath cells form several layers around the vascular bundles.\tMesophyll cells are undifferentiated and arranged in concentric layers around the vascular bundles. |
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| 843. |
What is necrosis?? |
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Answer» Thnk u..... Necrosis is a process of defeciency in which death of tissue occur. What a fast response...Thanku very much.. Necrosis is a cellular process of death occurring when the cells are highly exposed to extreme external conditions . It is caused by external agents such as infection, trauma, toxins. The organelles are not functional after the death of cell. It is always damaging or harmful. It is caused by Bacterial and fungal infections, mycobacterial infections, denatured proteins, pancreatitis, or by the deposits of antibodies and antigens . |
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| 844. |
Name the components of ETS. |
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Answer» Thanks for d answer..? Nicotinamide nucleotide , cytochrome ,flavoproteins etc |
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| 845. |
Name the moss that provides peat. |
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Answer» Yes .....mujhey b aisa e lagta hai..... Thanks....i have to say as if u r google itself...??? Peat is obtained from species of Sphagnum which is a moss. Peat has been in use as fuel. Peat is also used as packing material for shipment of living materials; because peat has good capacity to hold water. |
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| 846. |
What are heterocysts?? |
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Answer» ??thanku?? Heterocysts are specialized nitrogen-fixing cells formed during nitrogen starvation by some filamentous cyanobacteria, such as Nostoc punctiforme, Cylindrospermum stagnale, and Anabaena sphaerica. Heterocysts is present in some cyanobacteria. It is a large-sized, pale coloured, thick walled cell which occur in terminal, intercalary or lateral position in filamentous cyanobacteria, e.g., Nostoc. |
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| 847. |
Define periderm. Also the name of their constituent tissues |
| Answer» Periderm is composed of the phellogen, phellem, and phelloderm.During secondary growth, the outer epidermal layer and the cortical layer are broken because of the cambium. To replace them, the cells of the cortex turn meristematic, giving rise to cork cambium or phellogen. It is composed of thin-walled, narrow and rectangular cells. | |
| 848. |
What is the difference between differentiation ,dedifferentiation and redifferentiation |
| Answer» Differentiation: The cells derived from root apical meristem (RAM) and shoot apical meristem (SAM) and cambium differentiate, mature to perform specific functions. This act leading to maturation is termed differentiation. They, undergo a few or major structural changes both in their cell walls and protoplasm.Dedifferentiation: In plants, the living differentiated cells can regain the capacity to divide mitotically under certain conditions. The sum of events, that bestow this capacity to divide once again, are termed dedifferentiation. A dedifferentiated tissue can act as meristem (e.g., interfascicular vascular cambium, wound meristem, cork cambium).Redifferentiation: The product of dedifferentiated cells/tissue which lose the ability to divide are called redifferentiate cells/tissues and the event, redifferentiation. However, the growth in plants is open, and even differentiation in plants is open, because, e.g., the same apical meristem cells give rise to xylem phloem, fibres, etc., cells/tissues arising out of same meristem have different structures at maturity. The final structure at maturity of a cell/ tissue arising out of same meristem is determined by the location of the cell within. | |
| 849. |
What is Chemiosmotic hypothesis?? |
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Answer» Thank u for your help \tChemiosmotic hypothesis explain the mechanism of ATP synthesis in chloroplast.\tIn photosynthesis, ATP synthesis is linked to development of a proton gradient across a membrane.\tThe protons that are produced by the splitting of water are accumulated inside of membrane of thylakoids (in lumen).\tAs the electron moves through the photosystem, protons are transported across the membrane.\tNADP reductase enzyme is located on the stroma side of the membrane, along with electrons from the acceptor it removes H+ from the stroma during reduction of NADPH + H+.\tThis creates proton gradients across the thylakoid membrane as well as a measurable decrease in pH in the lumen.\tATPase has a channel that allows diffusion of protons back to stroma across the membrane.\xa0\tThis releases energy to activate ATPase enzyme that catalyses the formation of ATP. |
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| 850. |
Bio class11 ch 11 what d/ f transpiration and guttation |
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Answer» transpiration means the loss of water from the plant not only leaves some other parts of plants also leaves some waiter by the stomata the plant losses about 70% of water \tGuttationTranspirationOccurs during night time.Occurs during daylight.Water lost in guttation is rich in minerals.The transpired water is pure.Water is lost as the liquid.Water is lost in the form of vapors.The process takes place through hydathodes.Stomata perform this process.Guttation is an uncontrolled phenomenon.Transpiration is a controlled and regulated phenomenon.\t Guttation =loss of water in liquid phase by herbaceous plant from the tips of leaf blades known as guttation. Transpiration=loss of water by leaves of the aerial parts of plant in the form of water vapour known as transpiration. |
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