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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.
| 2801. |
Who coined the term ferment and enzyme?How do they differ? |
| Answer» Enzymes are synthesized by living cells. The term ‘enzyme’ was coined by Kuhne (1878) for catalytically active substances previously called ferments. | |
| 2802. |
What causes us to speak |
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Answer» Iarynx It may be Voice box (pharynx) or (larynx). |
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| 2803. |
What is vernalisation.please describe me in detail |
| Answer» According to vernalisation, It is defined as the qualitative or quantitative dependence of plants on exposure to a low temperature to flower. a plant can be induced to flower in a growing season by exposing it to low temperature. Therefore, it shortens the vegetative phase and hastens flowering in plants. | |
| 2804. |
Why ATP is called an energy currency |
| Answer» ATP is called the energy currency of the cell, and of life, because it is the energy molecule that all cells need in order to do anything within the human body. The molecule is used like a battery within cells and allows the consumption of one of its phosphorous molecules. | |
| 2805. |
What is Cardiac cycle ? |
| Answer» \tThe sequential event in the heart which is cyclically repeated is called the cardiac cycle and it consists of systole and diastole of both the atria and ventricles.\tDuration of a cardiac cycle is 0.8 seconds.\tDuring a cardiac cycle, each ventricle pumps out approximately 70 mL of blood which is called the stroke volume. | |
| 2806. |
what is helix of dna and rna made up of???? |
| Answer» DNA\xa0is\xa0made\xa0up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines\xa0DNA\'s\xa0instructions, or genetic code.\xa0Deoxyribonucleic\xa0acid\xa0(DNA) and ribonucleic\xa0acid\xa0(RNA) are polymers composed of monomers called nucleotides. An\xa0RNA\xa0nucleotide consists of a five-carbon sugar phosphate linked to one of four\xa0nucleic acid\xa0bases: guanine (G), cytosine (C), adenine (A) and uracil (U).\xa0Both\xa0DNA and RNA\xa0are\xa0made\xa0from nucleotides, each containing a five-carbon sugar backbone, a phosphate group, and a nitrogen base.\xa0DNA\xa0provides the code for the cell \'s activities, while\xa0RNA\xa0converts that code into proteins to carry\xa0out\xa0cellular functions. | |
| 2807. |
Can you suggest me a model of biology |
| Answer» | |
| 2808. |
Bionomical nomenclature |
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Answer» Binomial nomenclature deals with species and genus, genus start with capital letter and species start with small letter the system of nomenclature in which two terms are used to denote a species of living organism, the first one indicating the genus and the second the specific epithet. |
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| 2809. |
Give two name which has found 2 nucles in cell? |
| Answer» The\xa0eukaryotic\xa0cell nucleus. Visible in this diagram are\xa0the\xa0ribosome-studded\xa0double\xa0membranes of\xa0the nuclear\xa0envelope,\xa0the\xa0DNA (as chromatin), and\xa0the nucleolus. Within\xa0the cell nucleus\xa0is a viscous liquid called nucleoplasm, similar to\xa0the cytoplasm found\xa0outside\xa0the nucleus. Liver\xa0cells\xa0often\xa0have two nuclei\xa0so they\xa0can\xa0more efficiently\xa0do\xa0all these jobs.\xa0Having two nuclei is\xa0like\xa0having two\xa0sets of blueprints, so the\xa0cells can\xa0build\xa0two\xa0proteins at the same time. | |
| 2810. |
Draw and lebel the prothalus pf ferm |
| Answer» The prothallus is the fern gametophyte. It is a green, photosynthetic structure that is one cell thick, usually\xa0heart\xa0or kidney shaped, 3–10 mm long and 2–8 mm broad.\xa0A\xa0prothallus, or\xa0prothallium, is usually the gametophyte stage in the life of a\xa0fern\xa0or other pteridophyte. Occasionally the term is also used to describe the young gametophyte of a liverwort or peat moss as well.\xa0 | |
| 2811. |
What is Photocytosis |
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Answer» Actually i don\'t read this chapter.but if we split the term photocytosis the meaning we get: \'photo\' means\'light\' & \'cyto\' means cytoplasm. When cytoplasm divde in presence of light. Photocytosis is a process by which phagocytes engulf microorganisms and cellular materials. |
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| 2812. |
Why transpiration is known as evil necessory |
| Answer» Transpiration occurs through the stomata. The stomata are primarily meant for absorption of CO2 but the water vapors also escape through stomata and cause transpiration. Thus transpiration is called as a necessary evil because it is an inevitable process. The loss of water can lead to wilting, serious desiccation, and shortage of water. Transpiration helps in the ascent of the sap and the pulling of the water from the roots to the tips. Thus is it considered to be a necessary evil. | |
| 2813. |
What is euglena |
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Answer» Euglena is a microscopic protozoan that can be found in fresh water and salty environment Euglena is a microscopic protozoan that can be found in freshwater and saltwater environments. Euglena contain chloroplast which they can use to photosynthesize sugars. However, unlike algae, they can also ingest bacteria and small microbes for energy and nutrients |
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| 2814. |
Way biology class |
| Answer» I couldn\'t understand.??????? | |
| 2815. |
All vertebrates are chordates but all chordates are not vertebrates. Why? Give reason. |
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Answer» Thanks to my friend In adults the notochord is replaced by vertebral column during embryonic stage so,all vertebrates are chordates but all chordates are not vertebrates. View ncert solution from this app ? |
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| 2816. |
Define term aestivation |
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Answer» There are four types of aestivation first valvate 2nd twisted 3rd imbricate and 4th vexillary. valvate is found in calotropis twisted is found in lady finger imbricate is found in guava and Gulmohar and vexillary aestivation is found in pea The arrangement of calyx and Corolla on flowet axis It is a arrangements of petals and sepals on flower axis, that is called aestivation. |
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| 2817. |
What then would be the maximum concentration of alcohol in beverages that are naturally fermented? |
| Answer» Maximum concentration of alcohol in naturally fermented beverages is 15-16%.Higher level of alcohol (above 16%) is toxic to the yeast hence alcoholic concentration greater than this limit is achieved by fortifying the solution by adding more concentrated alcohol or by distillation. | |
| 2818. |
What makes a reptiles a reptiles?? |
| Answer» | |
| 2819. |
Describe the mechanism of inspiration and expiration |
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Answer» The inhalation of air is called inspiration .. the exhalation of air is called exhalation The mechanism of expiration or exhalation is of the ribs and diaphragm relaxes thus the volume of the thoracic cavity decreases the pressure increases the air is exhaled out The mechanism of inspiration aur inhalation is of the ribs and diaphragm contracts the volume of the thoracic cavity increases does the pressure decreases and the air is inhaled |
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| 2820. |
All are students or some are teachers !???????? |
| Answer» ??? | |
| 2821. |
In cockroach, which part store food |
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Answer» Crop Crop CROP Crop Crop. In a cockroach , the oesophagus opens into a sac-like structure called the crop that stores food . |
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| 2822. |
Taxonomy means |
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Answer» Taxonomy is a branch of biology which deals with identification, nomenclature and classification of organisms. It deals with nomenclature, classification of organisms and identification ✅?✅ Taxonomy is the process of naming and classifying things such as animal and plants into groups within the larger system, according to their similarties and difference |
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| 2823. |
What are the characteristics of prokaryotic cells? |
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Answer» Prokaryotic cells have different characteristic features. The characteristics of the prokaryotic cells are mentioned below.*They lack a nuclear membrane.* Mitochondria, Golgi bodies, chloroplast, and lysosomes are absent.* The genetic material is present on a single chromosome.* The histone proteins, the important constituents of eukaryotic chromosomes, are lacking in them.* The cell wall is made up of carbohydrates and amino acids.* The plasma membrane acts as the mitochondrial membrane carrying respiratory enzymes.* They divide asexually by binary fission. The sexual mode of reproduction involves recombination. No neuclear mambrane present |
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| 2824. |
Father of botany |
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Answer» Theophrastus is the father of botany. Theophrastus |
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| 2825. |
Whats key |
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Answer» It is a Choice made between the two opposite characters, that is called key. key is a taxonomic aid which is used by the scientists for referral purpose while classifying an organism. Key is a document in which one statement contrast the other. Each statement in a key is called lead which is based in contrasting characterstics |
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| 2826. |
Explain the transport of CO2 |
| Answer» Plasma and red blood cells transport carbon dioxide. This is because they are readily soluble in water.\tThrough plasma:\tAbout 7% of CO2\xa0is carried in a dissolved state through plasma. Carbon dioxide combines with water and forms carbonic acid.\t{tex}CO_2\\;+H_2O\\rightarrow\\underset{Carbonic\\;acid)}{H_2CO_3}{/tex}\tSince the process of forming carbonic acid is slow, only a small amount of carbon dioxide is carried this way.\tThrough RBCs:\tAbout 20 – 25% of CO2\xa0is transported by the red blood cells as carbaminohaemoglobin. Carbon dioxide binds to the amino groups on the polypeptide chains of haemoglobin and forms a compound known as carbaminohaemoglobin.\tThrough sodium bicarbonate:\tAbout 70% of carbon dioxide is transported as sodium bicarbonate. As CO2\xa0diffuses into the blood plasma, a large part of it combines with water to form carbonic acid in the presence of the enzyme carbonic anhydrase. Carbonic anhydrase is a zinc enzyme that speeds up the formation of carbonic acid. This carbonic acid dissociates into bicarbonate (HCO3–) and hydrogen ions (H+).\t{tex}\\mathrm{CO}_{2}+\\mathrm{H}_{2} \\mathrm{O} \\stackrel{\\text { Carbonicanhydrase }}{\\longrightarrow} \\mathrm{H}_{2} \\mathrm{CO}_{3}{/tex}\t{tex}\\mathrm{H}_{2} \\mathrm{CO}_{3} \\frac{\\text { Carbonic }}{\\text { anhydrase }} \\mathrm{HCO}_{3}^{-}+\\mathrm{H}^{+}{/tex} | |
| 2827. |
Due to which pigment mitochondrial matrix has yellow color? |
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Answer» No Mitochondria are virtually the only colored parts of the cell.If it were not for the melanin in our skin, the myoglobin in our muscles, and the hemoglobin in our blood, we would be the color of mitochondria--that is, a brownish red. |
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| 2828. |
Difference b/w freshwater and marien water organisms |
| Answer» The main difference between freshwater and marine life is the habitat they come from in the wild. Freshwater fish live in streams, rivers and lakes that have salinity of less than 0.05 percent. Depending on the species, fish can survive in temperatures ranging from 5 and 24 degrees Celsius. They can adapt to a change in habitat, like the rise and fall in water levels, temperature and oxygenation levels. Marine life refers to fish living in oceans and seas. These are also known as saltwater fish because they can only stay alive in waters with high salinity levels. A marine animal\'s habitats include coral reef and seagrass bed. | |
| 2829. |
What are bulliform cell |
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Answer» Bulliform cells are large , bubble shaped epidermal cells that occur in groups on the upper surface of the leaves of many monocots \tCertain adaxial epidermal cells along the veins modify themselves into large, empty, colourless cells, which are called bulliform cells. Example- grass.\tWhen the bulliform cells in the leaves have absorbed water and are turgid, the leaf surface is exposed and when they are flaccid due to water stress, they make the leaves curl inwards to minimise water loss. |
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| 2830. |
How are viroids differ form viruses |
| Answer» Virus\xa0is an obligate intracellular parasite which can reproduce only by invading and taking over other cells as they lack the cellular machinery for self reproduction.\xa0Viroids\xa0are subviral, smallest known agents of infectious disease. The term\xa0viroid\xa0was coined by T.OViroids are free RNA molecules of low molecular weight without any protein coat while viruses can have either RNA or DNA molecules encapsulated in a protein coat. Viroids are smaller in size than viruses. | |
| 2831. |
What do you understand by s in 70s ribosome of prokaryotes |
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Answer» S is also sediment coefficient \'s\' is swedberg\'s unit here |
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| 2832. |
Which mouth part of cockroach acts same as our tongues |
| Answer» Hypopharynx | |
| 2833. |
What is the function of spermatophore in cockroaches |
| Answer» Spermatophore: The sperms produced from testes, while the cockroach is still young, are brought by the vasa deferentia into the seminal vesicles for storage. The sperms in the seminal vesicles are glued together in the form of bundles called spermatophores. | |
| 2834. |
Enlist one example each where following modification is found 1) stem tendril 2) leaf tendril |
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Answer» Passiflora incarnata ., Stem tendril .,leaf tendril , samagra 1)pumpkin, bottle gourd 2)pea,smilax |
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| 2835. |
How many pair of chromosomes in human body |
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Answer» 23 pairs of chromosome are present in human 23 pairs Chromosomes\xa0are found in the nucleus of every cell. Different forms of life have a different number of\xa0chromosomes\xa0in each cell.\xa0Humans\xa0have 23\xa0pairs of chromosomes\xa0for a total of 46\xa0chromosomes\xa0in each cell. |
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| 2836. |
How many chromosomes in human |
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Answer» There are 46 chromosomes and 23 pair of chromosomes are present in human body. There are 46 chromosomes in human |
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| 2837. |
What is the enzyme catalysing phosphorylation reaction? |
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Answer» Maybe it\'s RuBisCo.??.. I\'m not sure. Animal cell and plant cell difference |
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| 2838. |
Why sunflower is not a flower? |
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Answer» Sunflower is not a flower due to the fact because its ray florets lack either of the male and female gametes , Stamens and Pistils.Therefore , its a neuter flower and has lost its ability to perform sexual reproduction.But in reality the real flower is the brown patches present on the inner sides. yes . .......this is right |
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| 2839. |
What do you understand by branch of study systematic |
| Answer» Systematics is concerned with the classification systems and nomenclature of organisms. It is a branch of biological science that studies the distinctive characteristics of species and how they are related to other species through time. Thus, it is the basis used to understand the evolution of life. | |
| 2840. |
Viruses are cellular or non cellular creatures |
| Answer» viruses areNon cellular. | |
| 2841. |
What is intrinsic factor?what its importance or significance? |
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Answer» Thnx Intrinsic factor is a glycoprotein secreted by parietal (humans) or chief (rodents) cells of the gastric mucosa. In humans, it has an important role in the absorption of vitamin B12 (cobalamin) in the intestine, and failure to produce or utilize intrinsic factor results in the condition pernicious anemia. |
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| 2842. |
How many gland in our body |
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Answer» there are many gland in our body.for example : hypothalamus 2.pineal gland 3. pitutary gland 4.thyroid etc....for more examples u need to read chapter 9 class 10th. There 3 glands in our body (i.e.,salivary gland, liver, pancreas) There are two gland in our body. |
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| 2843. |
What is cell envelope and it\'s modification?????????????? ?? ?? ?? ?? ?? ???? |
| Answer» Prokaryotic cell envelope possess chemically complex cell envelope. The cell envelope comprises of three layers: the outermost glycocalyx, the cell wall and the plasma membrane. All the three layers together act as a single protective unit. Gram positive:- Cells that take up the gram stain and are stained dark blue or purple.Gram negative:- Cells that do not take up the gram stain and are stained pink or light red.If glycocalyx is present as a loose sheath it is called slime layer. At times glycocalyx is present as thick and tough layer then it is called capsule.The cell wall determines the shape of the cell and also provides structural support to the cell. The plasma membrane is semi-permeable in nature.Bacteria may be motile or non-motile based on the presence of thin filamentous extensions called flagella. Flagella helps in motility. Bacterial flagella are composed of three parts −1.Filament2.Hook3.Basal BodyPili are elongated structures made up of pilin proteins. Fimbriae are small bristle like fibres which mostly help in attachment of the bacteria to different surfaces. | |
| 2844. |
agar blood main Calcium ion ka concentration increase hua to kya problems hogi |
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Answer» The blood can start clotting When the concentration of calcium ion increase in blood can create kidney stones, weaken the bone etc.. |
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| 2845. |
Explain the haplo-diplontic stage. |
| Answer» Haplontic- sporophytic generation is\xa0represented by one celled zygote. There are no free living sporophytes. Meiosis in the zygotes results in the formation of haploid spores. The haploid spores divide mitotically and form gametophyte. The dominant photosynthetic phase in such plants is free living gametophyte. This kind of life cycle is haplontic.Diplontic-\xa0Diploid sporophyte is dominant photosynthetic phase. The gametophyte phase is represented by single to few celled haploid gametophyte. This kind is called diplontic.Haplo-diplontic-\xa0both phases are multicellular and exhibit an intermediate condition. They differ in their dominant phases. | |
| 2846. |
Write different classes of kingdom fungi? |
| Answer» Phycomycetes,ascomycetes,basidiomycetes,deuteromycetes and zygomycetes | |
| 2847. |
Jellyfish belongs to which phylum? |
| Answer» Jellyish belongs to phylum Coelenterata (Cnidaria), kingdom Animalia. | |
| 2848. |
How roots are formed in stem cuttings as radicle is not there |
| Answer» Radicles of a plant is modified to become root of it | |
| 2849. |
Which light range is most effective in photosynthesis this is MCQ |
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Answer» Red light Red. And blue |
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| 2850. |
What is antomy |
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Answer» Study of internal organs Anatomy is the study of a plant\'s internal structure and its different functions performed by the different parts. Study of internal structure The study of internal atructure of plants is called anotomy Anatomy is the study of the internal structure. The study of internal structure us called anatomy |
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