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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.
| 601. |
Name two essential amino acids ?? |
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Answer» Tryptophan and valin Isoleucine and leucine |
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| 602. |
What is hydroponics..?? |
| Answer» Technique of growing plants in nutrient solution without soil | |
| 603. |
Why RER is more closer to nucleus? |
| Answer» Protein exchange takes place between the walls of nuclear membrane and RER that is it is more closer to nucleus | |
| 604. |
Most abundant enzyme |
| Answer» Rubisco | |
| 605. |
What is periderm |
| 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. | |
| 606. |
Write drawback of artificial system of classification |
| Answer» No phylogenetic n anatomical characters were considered | |
| 607. |
Meiosis is known as reduction division |
| Answer» Because ploidy level becomes n....haploid | |
| 608. |
Different between DNA and RNA |
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Answer» \tDefinitionDNA is a long polymer with a phosphate and deoxyribose backbone. It has four different bases: cytosine, thymine, adenine, and guanine.RNA is a polymer with a phosphate and\xa0ribose backbone with four different bases: cytosine, uracil, adenine, and guanine.LocationDNA is found in the nucleus of a cell and in mitochondria.RNA is found in nucleus, cytoplasm, and in the ribosome.Sugar portion2-deoxyriboseRiboseFunctionTransmission of the genetic information and medium of long-term storageTransmission of the genetic code required for the creation of proteins from the nucleus to the ribosome.Predominant StructureA double-stranded molecule and has a long chain of nucleotides.A single-stranded molecule and has a shorter chain of nucleotides.PropagationDNA is self-replicating.Synthesized from DNA when needed.\t DNA is deoxyribonucleic acid and RNA is ribonucleic acid DNA has doubled stranded while RNA is single stranded |
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| 609. |
What is vernalisation?? |
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Answer» Vernalization : It is the treatment of low temperature for reducing vegetative phase and hastening the reproductive phase. It was first discovered by Lysenko.Vernalisation refers specially to the promotion of flowering by a period of low temperature. For example - Subjecting the growing of a biennial plant to a cold treatment stimulates a subsequent photoperiodic flowering response. Bhai kuch important bata de class 11 k liya |
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| 610. |
What is diffrence btw rennin & renin |
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Answer» Renin hormone works in raas mechanism n rennin is an engyme The difference between rennin and renin is of spelling bro??? |
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| 611. |
How do cells divide in meiosis cell division? |
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Answer» Meiosis is divided into two phases which are meiosis one and meiosis two.In meiosis one there are five stages namely leptotene, zygotene, pachytene, diplotene and diakinesis in prophase, then normal metaphase, anaphase and telophase follows.In leptotene, the condensation of chromosomes occurs.In zygotene, the homologous pairing of chromosomes occurs.In pachytene, crossing over takes place forming chiasmata, which leads to variation.In diplotene, chiasma break down and slip to the tip of chromosomes.In diakinesis, nuclear membrane and nucleolus disappear and all chromosomes come to the center.After the end of prophase one, metaphase one, anaphase one and telophase one occurs, similar to mitosis. The only difference is that two cells with sister chromatids would be present.This is then followed by meiosis two which is very similar to mitosis.The main difference between mitosis and meiosis is that the latter leads to variation and is called the reductions division while the former is called equational division. Cells divide in half of the toal cells |
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| 612. |
Important concepts of plant kingdom |
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Answer» Diffrence in all 3 algaes n bryophyte ,pteridophytes, gymnosperms n angiosperms k general features are sufficient Nothing extra plz refer only ncert and remember all the classes of plantae kingdom about their habitat,type of reproduction etc and important their life cycle.. ?? Same question which I have to ask..... Plz tell someone |
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| 613. |
which unit membrane is used to bound a vacuole of a plant cell |
| Answer» Tonoplast refers to the special membrane surrounding the large vacuole in plant cells.\xa0 | |
| 614. |
Name the largest unicellular algae |
| Answer» Unicellular algae are plant-like autotrophs and contain chlorophyll.\xa0They include groups that have both multicellular and unicellular species:Euglenophyta, flagellated, mostly unicellular algae that occur often in freshwater.\xa0In contrast to most other algae, they lack cell walls and can be mixotrophic (both autotrophic and heterotrophic). An example is Euglena gracilis.Chlorophyta (green algae), mostly unicellular algae found in fresh water.\xa0The chlorophyta are of particular importance because they are believed to be most closely related to the evolution of land plants.Diatoms, unicellular algae that have siliceous cell walls.\xa0They are the most abundant form of algae in the ocean, although they can be found in fresh water as well.\xa0They account for about 40% of the world\'s primary marine production, and produce about 25% of the world\'s oxygen.\xa0Diatoms are very diverse, and comprise about 100,000 species.Dinoflagellates, unicellular flagellated algae, with some that are armored with cellulose.[48] Dinoflagellates can be mixotrophic, and are the algae responsible for red tide.\xa0Some dinoflagellates, like Pyrocystis fusiformis, are capable of bioluminescence. | |
| 615. |
Describe the effect of substrait concentration on enzyme activity. |
| Answer» If the substrate concentration increases, initially the velocity of enzymatic reaction rises. In the final stage, the reaction reaches a maximum velocity or V max. This velocity does not rise any further even if there is an increase in substrate concentration. The reason is that at V max, there are no free enzyme molecules available that can bind with extra substrate molecules. | |
| 616. |
Difference between pectoral and pelvic girdle |
| Answer» \t\xa0Pectoral girdle\xa0Pelvic girdle1It is a skeletal support from where the forelimbs of vertebrates are attached.1It is a skeletal support form where the hind limbs of vertebrates are attached.2It is composed of twoBones namely, clavicle or collar bones and scapula or shoulder bone.2It is composed of three bones, upper ileum, inner pubic, and ischium.\t | |
| 617. |
What is glycogenolysis and gluconeogenesis |
| Answer» \tGLYCOGENOLYSISGLUCONEOGENESISIt results in the formation of glucose by breaking down glycogen molecules stored in the liver.It results in the formation of glucose molecules from non-carbohydrate sources.Glycogen is broken down to form Glucose- 6-phosphate.Amino acids, lactic acids are converted into glucose.It is hydrolytic process.It is anabolic process.Less amount of ATP is consumed.\xa06 molecules of ATP are consumed per 1 glucose molecule synthesised.\xa0\t | |
| 618. |
What is gfr? How can it be controlled by renin angiotensil system |
| Answer» | |
| 619. |
Why does milk flow out of utensil when boiled,but water don\'t? |
| Answer» Because on boiling water get converted into vapour | |
| 620. |
what is hyperglycemia and hypoglycemia? and also diffrence between diabetes militus and insipidus? |
| Answer» Diabetes mellitus\xa0occurs due to insulin resistance or insulin deficiency and subsequent high blood glucose levels.\xa0Diabetes Insipidus\xa0on the other hand develops as a result\xa0of\xa0the stilted production\xa0of\xa0a hormone\xa0in the\xa0brain, which is released to stop the kidneys producing so much urine\xa0in\xa0order to retain water.\xa0In diabetes\xa0mellitus,\xa0hyperglycemia\xa0is usually caused by low insulin levels (Diabetes\xa0mellitus\xa0type 1) and/or by resistance to insulin at the cellular level (Diabetes\xa0mellitus\xa0type 2), depending on the type and state of the disease.\xa0Hypoglycemia\xa0is\xa0different\xa0from hyperglycemia, which occurs when you have too much sugar in your bloodstream.\xa0Hypoglycemia\xa0can happen in people with\xa0diabetes\xa0if the body produces too much insulin. Insulin is a hormone that breaks down sugar so that you can use it for energy. | |
| 621. |
disadvantages of kidney |
| Answer» Did u meant kidney transplantation?? | |
| 622. |
Difference between squamous and cuboidal and columnar epithelium tissues |
| Answer» Cuboidal epithellium : 1) cell forms like cuboidal shape 2)located in lining of kidney, ducts of salivary gland 3) function: for mechanical support, strength & secretionscolumnar epithellium: 1)cell forms like pillar or column like 2) located in lining of intestine 3) function : for absorption | |
| 623. |
Arihant book of biology with solved sample paper downloads |
| Answer» | |
| 624. |
How do living things grow |
| Answer» Living molecules grow by the help of certain biomolecules like oxygen,carbon,hydrogen,etc. | |
| 625. |
How do living grow |
| Answer» by the cell division and hormones | |
| 626. |
Define chemosmotic hypothesis |
| Answer» 1. Splitting of water results in Increasing of H+ ion concen\'n. (in thylakoid space)2. H+ ion concen\'n decreases towards the stroma side.(PQ converts to PQH2)Reduction of NADP+.pH increases. 3. It creates transmembrane proton concen\'n gradient. 4. Thylakoid memb. Is not itself permeable to p+ so p+ moves towards strong side through ATPase complex. ATPase complex has: F0 (pr. Inside & forms channels) F1 (outside the memb.) H+ ions flow from higher to lower concen\'n through ATPase complex that allows ATP synthase enzyme to produce ATP from ADP. 3H+ ions form 1ATP. | |
| 627. |
How to learn for exam in one month how to learn |
| Answer» | |
| 628. |
Difference between phospholipids and glycolipids ? |
| Answer» Phospholipid is lipid + phosphate/phosphorus andGlycolipid is lipid + carbohydrate/glucose | |
| 629. |
Difference between renin and rennin ? |
| Answer» Rennin also called as chymosin is an enzyme (act similarly as pepsin) which is synthesized by chief cells (gastric mucosa) of stomach in some ruminant animals like calves. It is required for digestion of milk.Renin is a enzyme produced by human kidneys that participates in the body\'s renin-angiotensin-aldosterone system (RAAS), a hormone system that regulates blood pressure and fluid balance. It acts on angiotensinogen (a protein) and cleaves to produce angiotensin I (a decapeptide) which regulated arterial blood pressure. | |
| 630. |
What is gyri and sulci ? |
| Answer» In brain, the surface is highly folded to forn ridgrs and depressions. The ridges are called as \'Gyri\' while depression are called as \'Sulci\'The sulci (or fissures) are the grooves and the gyri are the "bumps" that can be seen on the surface of the brain. The folding created by the sulci and gyri increases the amount of cerebral cortex that can fit in the skull. | |
| 631. |
What is cell theory? And who gave it |
| Answer» Cell theory is a theory which introduce the properties of cell.Cell theory says that:\tCell is the structural and functional unit of life.\tAll organisms are made up of two or more cells.\tAll cells develop from pre-existing cellsThe Cell theory proposed in 1838 by Matthias Schleiden and by Theodor Schwann. | |
| 632. |
Why the membrane of neuron is polarised |
| Answer» \xa0A neuron is itself in a salt solution with higher concentration of Na+ ions . Inside the neuron there is a high concentration of K+ ions and negatively charged proteins. This is why the neuron is polarised.This allows the transfer of impulse to take place. | |
| 633. |
Diagramatically distinguish between anaphase ll of meiosis in a cell(2n=4) |
| Answer» | |
| 634. |
Name the two enzymes of saliva and mention their functions |
| Answer» Salivary amylase and lysozyme.Salivary amylase hydrolyzes starch into maltose and lysozyme acts as an antibacterial agent that prevents infections. | |
| 635. |
What is enzyme..???? |
| Answer» Enzyme is basically a type of protein which help the rxn to take place at a faster rate | |
| 636. |
What is an enzyme |
| Answer» Protein helping rxn to take place at a faster rate usually biological | |
| 637. |
How mamy types of tissues are present in animle |
| Answer» Four types of tissues are present in animals 1. Epithelial tissue2. Connective tissue3. Muscular tissue4. Neural tissue. | |
| 638. |
How many tissues are present |
| Answer» On the basis of their functions, animal tissues are classified into four major types – epithelial tissues, muscular tissues, connective tissues and nervous tissue.\tEpithelial Tissue: It is the simplest tissue and protective in nature. The cells of this tissue are tightly packed and they form a continuous sheet. They contain a very little or no intercellular space. It covers most organs and cavities within the body. The skin, the lining of the mouth, the lining of blood vessels, lung alveoli and kidney tubules are all made of epithelial tissue. Anything entering or leaving the body crosses at least one layer of epithelium. As a result, the permeability of the cells of various epithelia plays an important role in regulating the exchange of materials between the body and the external environment and also between different parts of the body. All the epithelium is usually separated from the underlying tissue by an extracellular fibrous basement membrane.ii. Connective Tissue: Connective tissue is the binding and supporting tissue of the animal body. Matrix forms the main bulk of this tissue. The cells are loosely spaced and less in number. The matrix may be jelly like, fluid, dense or rigid. The nature of matrix differs in concordance with the function of the particular connective tissue. | |
| 639. |
What is guanine |
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Answer» Guanine a oart of dana which binds with cytosine In DNA, guanine is paired with cytosine. The guanine nucleoside is called guanosine. With the formula C5H5N5O, guanine is a derivative of purine, consisting of a fused pyrimidine - imidazole ring system with conjugated double bonds. A biology term |
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| 640. |
How many types of special connective tissue? |
| Answer» Areolar Connective Tissue:\tIt is found underneath the skin; also around nerves and blood vessels.\tIt is composed of fibroblasts, macrophages and mast cells.\tIt provides support and repair tissues.Adipose Tissue:\tIt is present in skin and organs.\tIt is composed of fat globules and is characterized by fat storage\tIt provides insulation due to the fat present. | |
| 641. |
Anybody knows about chur |
| Answer» | |
| 642. |
Can we say that dark reaction takes place only during day time?? |
| Answer» | |
| 643. |
What is ficobiont |
| Answer» Phycobiont\xa0refers to the algal component of the lichens and mycobiont refers to the fungal component. Both of these are present in symbiotic relationship in which Algae prepare food for Fungi due to presence of chlorophyll whereas the fungus provides shelter to algae and absorbs water and nutrients from the soil.\xa01The algal component of a lichen; any alga which is associated with a fungus to form a lichen (occasionally: specifically a green alga, as distinct from a blue-green alga). 2An alga in association with another type of organism (usually a plant). | |
| 644. |
What is red trides??? |
| Answer» Red tides : When the sea appears red due to the rapid multiplication of red dinoflagellates e.g., Gonyaulax, it is called as red tides. | |
| 645. |
Important Topic Anual Exam |
| Answer» | |
| 646. |
What is cat\'s nail? |
| Answer» Fibrin Nail is made up of keratin which does not dissolve in water | |
| 647. |
What is the difference between urea and urine?? |
| Answer» Urine\xa0is a fluid that contains body wastes and stored in\xa0urinary\xa0bladder to come out of the body through urethra.\xa0Urea\xa0is an organic compound produced in our body as waste and is found to be mixed with the\xa0urine.\xa0Urea\xa0is thrown out of the body with\xa0urine.\xa0Urea\xa0is first produced in the liver through the metabolism of nucleic acids and amino acids. However,\xa0urine\xa0is produced in the kidneys through the\xa0urination. | |
| 648. |
What is the difference b and t lymphocytes |
| Answer» \tB-Lymphocytes (B-Cells)T-Lymphocytes (T-Cells)B-cells mature in the bone-marrow.T-cells mature in the thymus.B-cells constitutes 20% of the total lymphocytes in the blood.T-cells constitutes 80% of the total lymphocytes in the blood.B-cells are involved in the humoral immune response.T-cells are involved in the cell mediated immune response.Mature B cells occur outside the lymph node.Mature T cells occur inside the lymph node.The sub-populations of B-cells are Memory cells and Plasma cells.The sub-populations of T-cells are Cytotoxic T cells, Helper T cells and Suppressor cells.\t\xa0 | |
| 649. |
Give a brief account of mechanism of hearing..... Answer should be to the point.. |
| Answer» The ears are the sense organs which help us in hearing sound. It consists of three compartments – outer ear, middle ear and inner ear.\xa0i. The outer ear consists of a broad part called pinna having a long passage called ear canal. At the end of the ear canal is a thin, elastic and a circular membrane called ear drum. It is also called tympanum. The outer ear contains air.ii. The middle ear contains three small and delicate bone called hammer, anvil and stirrup. These bones are linked to one another. The middle ear transmits the amplified pressure variations received from the sound wave to the inner ear.\xa0iii. In the inner ear, the pressure variations are turned into electrical signals by the cochlea. These electrical signals are sent to the brain via the auditory nerve, and the brain interprets them as sound.\xa0\xa0 | |
| 650. |
Renin :- machinism in Regulating kidny |
| Answer» Kidney have a special GFR(Glomerular Filtration Rate) regulating mechanism i.e. JGA(Juxta Glomerular Apparatus). It is the modified cells formed where DCT and efferent blood vessel come in contact. When GFR of kidney become low then JGA secrets renin which stimulates blood flow and make GFR to normal. | |