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2351.

Haemoglobin-oxygen dissociation curve is -(1) Hyperbolic(2) Sigmoid(3) Straight(4) Constant

Answer»
2352.

जाप X 'रदरयनाा SV e

Answer»

यह कथन अधूरा है।

"सभी पौधे दिन में ऑक्सीजन देते हैं और रात में कार्बन डाइऑक्साइड"

स्पष्टीकरण:

प्रकाश संश्लेषण केवल दिन के समय के दौरान होता है।

इस दौरान ऑक्सीजन का उत्पादन होता है। कुछ ऑक्सीजन का उपयोग श्वसन के लिए किया जाता है और शेष ऑक्सीजन को हवा में फैलाया जाता है।

श्वसन द्वारा दिन के समय उत्पादित कार्बन डाइऑक्साइड को प्रकाश संश्लेषण में उपयोग किया जाता है।

लेकिन रात के समय, कोई प्रकाश संश्लेषण नहीं होता है और इसलिए कोई ऑक्सीजन ऑक्सीजन का उत्पादन नहीं किया जाता है जो हवा में फैलने वाली पत्तियों को श्वसन के लिए ले जाता है और श्वसन द्वारा उत्पादित कार्बन डाइऑक्साइड हवा में फैल जाता है।

इसलिए श्वसन दिन-रात होता है .. इसलिए हर समय कार्बन डाइऑक्साइड उत्सर्जित होता है ...।

2353.

how does Amoeba intake food? Briefly mention .

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When it sensesfoodin its surroundings it extends its pseudopodia in that direction and moves towards it. Then it engulfs thefoodwith its pseudopodia. When thefoodenters its body theamoebaforms afoodvacuole around it which contains certain enzymes to digest thefood.

amoeba senses food and starts moving towards it and engulfs the food through pseudopodia I.e. false feet and the the food moves to food vacuole for further digestion ,after this the remaining food gets ejected out from the body through pseudopodia.

Amoeba takes in food using temporary finger like extensions of the cell which fuse over food particle to form a food vacuole. Inside the food vacuole the complex substances are broken down into simpler ones before use which then diffuse into the cytoplasm. The remaining undigested food is moved to the surface of the cell and throw out by egestion.

Amoebaobtains itsfoodby the process of endocytosis. ... It engulfs thefoodparticle with the help of pseudopodia and then forms a vacuole around it. When the particleiscompletely trapped theamoebasecretes digestive enzymes that digests thefood. thus theamoebaobtains it'sfood.

2354.

Describe the different processes of release of energy from glucose in living organisms.

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Glycolysis

During glycolysis, glucose molecules (six-carbon molecules) are split into two pyruvates (three-carbon molecules) during a sequence of enzyme-controlled reactions. This occurs in both aerobic and anaerobic respiration.

Phosphorylation

Duringphosphorylationglucose is converted into glucose 6-phosphate using energy and phosphate groups from ATP. This is converted to fructose 1,6-diphosphate, again using ATP as a source of energy and phosphate groups. ATP is hydrolysed to ADP + phosphoric acid (Pi).

tose 1, 6-diphosphate breaks down into glyceraldehyde 3-phosphate and dihydroxyacetone phosphate.

these three-carbon molecules are phosphorylated further, forming diphosphates. This reaction requires phosphoric acid and energy gained from the reduction of NAD+(oxidised form of nicotinamide adenine dinucleotide) to NADH (reduced form1,3-diphosphate molecules are dephosphorylated to form glycerate 3-phosphate molecules (a hydrolysis reaction). The energy released and the phosphate group that splits out are used to make more ATP from ADP.

to a pyruvate molecule. Again, the energy released and the phosphate group that splits out are used to make more ATP from ADP.

The link reaction

This links glycolysis to the Krebs Cycle (sometimes called the citric acid cycle). Pyruvate molecules aredecarboxylated(they lose a molecule of carbon dioxide) in the mitochondria. Pyruvate molecules are oxidized and converted to acetylcoenzyme A, usually abbreviated to acetyl CoA.

2CH3COCOO-+ 2NAD++ 2H2O --->2CH3COO-+ 2NADH + 2H++ 2CO2

The oxidised form of nicotinamide adenine dinucleotide, NAD+, is reduced to its reduced from NADH.

2355.

6 What are the conditions required for microbes to grow?

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In order to grow successfully, microorganisms must have a supply of wateras well as numerous other substances including mineral elements, growth factors, and gas, such asoxygen.

Virtually all chemical substances in microorganisms contain carbon in some form, whether they be proteins, fats, carbohydrates, or lipids

2356.

What is meant by ite processes and eame the buasic Mfe processes comionalliving organisms

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The basic essential activities performed by an organism to withstand its life are called life processes. These include nutrition, respiration, circulation, excretion and reproduction. Organisms obtain energy from food to perform these life processes which are essential for survival.

2357.

7.What are the necessary conditions for autotrophic nutrition and what are its by-products?

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Autotrophic nutrition takes place through the process of photosynthesis. Carbon dioxide, water, chlorophyllpigment, andsunlightare the necessary conditions required for autotrophic nutrition. Carbohydrates (food) and O2are the by-products of photosynthesis.

2358.

What are the conditions necessary for respiration to occur?

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Aerobic respiration. Glucose and oxygen react together in cells to produce carbon dioxide and water and releases energy. The reaction is called aerobic respiration because oxygen from the air is needed for it to work. ... The mitochondria, found in the cell cytoplasm, are where most respiration happens.

2359.

a) What is competitive release? Explain with suitable example.

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Competitive releaseoccurs when one of two species competing for the same resource disappears, thereby allowing the remaining competitor to utilize the resource more fully than it could in the presence of the first species.

2360.

Example 5Find output voltage Vovo160-1V

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2361.

Example 5Find output voltage VoSi2V -Vo1K2-1V

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2362.

Example 5Find output voltage Vo2V4VVo1K02-1V

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2363.

- A. Choose the correct option and rewrite the sentence.Georg Hegel's method of analysis based on opposites is known asOptions:A) ThesisB) DialecticsD) SynthesisC) Antithesis2.Experts scrutinise the historical documents for theirOptions:A) biodegradabilityB) authenticityC) saleabilityD) readability

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1.Georg hegel's methid of analysis based on opposite is known as dialectics.2. Experts scrutinise the historical documents for their authenticity.

dialecticsauthenticity

1.dialectics2.authenty

1. dialectic2. authenty

1) the answer is B2) the answer is B

the answer is B ok. and second one also B

1. (b) dialectics 2.(b) authenticity

1.Dialectics2. Authenty

2364.

uses of cotton

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Cotton seed is fed to cattle and crushed to makeoil.

This cottonseedoilis used forcookingand in products likesoap, margarine, emulsifiers,cosmetics, pharmaceuticals, rubberand plastics.

Linters are the very short fibres that remain on the cottonseed after ginning.

2365.

uses of liver

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Theliverand these organs work together to digest, absorb, and process food. ... Theliveralso detoxifies chemicals and metabolizes drugs. As it does so, theliversecretes bile that ends up back in the intestines. Theliveralso makes proteins important for blood clotting and other functions.

The liver is a large, meaty organ that sits on the right side of the belly. Weighing about 3 pounds, the liver is reddish-brown in color and feels rubbery to the touch. Normally you can't feel the liver, because it's protected by the rib

the liver filters blood .

2366.

green algae uses

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. Food:

A number of green algae are used as food, e.g., Ulva, Caulerpa, Enteromorpha. Chlorella can yield food rich in lipids, proteins, vitamins and minerals.

2. Antibiotics:

They can be extracted from Chlorella and Caulerpa.

3. Parasites:

Cephaleuros virescens causes red rust of tea and reduces yield of tea. It also reduces the yield of coffee, pepper, citrus, etc.

4. Sewage Oxidation:

Sewage oxidation ponds contain a number of green algae, e.g., Chlamydomonas, Chlorella, Scenedesmus.

2367.

POLYNOMIALS11a8.Ifa. Bare the roots of x' + ax + b = 0, then-+Bb) ab

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option c is right answer hai

c is the correct answer

2368.

2. Who is regarded as "Father of modern algology of India'?

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Mandayam Osuri Parthasarathy Iyengar

2369.

about apiculture for project

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The word ‘apiculture’ comes from the Latin word ‘apis’ meaning bee.

So, apiculture or beekeeping is the care and management of honey bees for the production of honey and the wax.

In this method of apiculture, bees are bred commercially in apiaries, an area where a lot of beehives can be placed. Apiaries can be set up in areas where there are sufficient bee pastures – usually areas that have flowering plants.

2370.

chemical simplification of food

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Invalid Question type.

2371.

Project on circulatory system

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The essential components of the human cardiovascular system are the heart, blood and blood vessels. It includes the pulmonary circulation, a "loop" through the lungs where blood is oxygenated; and the systemic circulation, a "loop" through the rest of the body to provide oxygenated blood

2372.

a) fertilisationThe number of nuclei present in a zygote isiii) two

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Only one, the neuclei from sperm and ovum fuse to form a single nucleus forming zygote

2373.

The number of nuclei Present in a Zygote is:(a) one(c) fourQ. 7(b) two(d)

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b) two

explaination :A zygote is the sperm and the egg after they have combined, therefor a zygote hastwonuclei

2374.

7. Removal of gonads cannot be considered as a contraceptive option. Why

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2375.

procedure to examine chara under microscope

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Charais agenusofcharophytegreen algaein the familyCharaceae. They are multicellular and superficially resemble land plants because ofstem-like andleaf-like structures. They are found in fresh water, particularly in limestone areas throughout the northern temperate zone, where they grow submerged, attached to the muddy bottom. They prefer less oxygenated and hard water and are not found in waters where mosquito larvae are present.[citation needed]They are covered with calcium carbonate deposits and are commonly known as stoneworts.Cyanobacteriahave been found growing as epiphytes on the surfaces ofChara, where they may be involved in fixingnitrogen, which is important to plant nutrition.[2]

thats good but i want procedure to observe it under microscooe

2376.

6. What are the functions of ovaries anduterus in female reproductive system?

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Thefemale reproductive systemprovides severalfunctions. Theovariesproduce thefemaleegg cells, called the ova or oocytes. The oocytes are then transported to the fallopian tube where fertilization by a sperm may occur. If fertilization does not take place, theuterinelining is shed as menstrual flow.

can you please give me a detail answer

2377.

coordinateThcoordinate4.Find the equation of the line through the intersection of 5x-3y-1 and 2x + 3y23-0 and perpendicular to the line 5x-3y-1-0.

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2378.

realization of ts-flip flop with sr flip flop

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What is TS Flip Flop?

2379.

realization of jk flip flop using sr flip flop

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2380.

what is use water .

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Ten uses of water are.1. we can use water for bathing.2we can use water for washing clothes and floor .3.we can use water for drinking.4.wr can use water in agriculture field.5.we can use water to make vegetables.6.we can use water for mopping.7.wecan use water for producing stem

Read more on Brainly.in - https://brainly.in/question/1043002#readmore

water is an important constituent of life on earth,it plays very important role in sustaining life on earth, besides it maintains physical equilibrium on earth in terms of temperature, and humidity.

we can use water for drinking

2381.

24. Distinguish between spiral and discoidal cleavage.

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Meroblastic

In the presence of a large amount of yolk in the fertilized egg cell, the cell can undergo partial, or meroblastic, cleavage. Two major types of meroblastic cleavage arediscoidalandsuperficial.

Discoidal

In discoidal cleavage, the cleavage furrows do not penetrate the yolk. The embryo forms a disc of cells, called a blastodisc, on top of the yolk. Discoidal cleavage is commonly found inmonotremes,birds,reptiles, andfishthat havetelolecithalegg cells (egg cells with the yolk concentrated at one end). The layer of cells that have incompletely divided and are in contact with the yolk are called the "syncytial layer".

I want spiral cleavage

Holoblastic

In the absence of a large concentration of yolk, four major cleavage types can be observed inisolecithalcells (cells with a small even distribution of yolk) or in mesolecithal cells (moderate amount of yolk in a gradient) –bilateral holoblastic,radialholoblastic,rotational holoblastic, andspiralholoblastic, cleavage.

Spiral

Spiral cleavage is conserved between many members of thelophotrochozoantaxa, referred to asSpiralia.[5]Most spiralians undergo equal spiral cleavage, although some undergo unequal cleavage (see below).[6]This group includesannelids,molluscs, andsipuncula. Spiral cleavage can vary between species, but generally the first two cell divisions result in four macromeres, also called blastomeres, (A, B, C, D) each representing one quadrant of the embryo.

many many thanks

please give me other question s answer

2382.

15. Third cleavage in frog's development is(a) Equatorial(c) Lalitudinal(b) Vertical(d) of these.(AFMC 1998)

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Thethird cleavage, as expected, is equatorial. However, because of the vegetally placed yolk, thiscleavagefurrow inamphibianeggs is not actually at the equator, but is displaced toward the animal pole.

2383.

A diver is able to cut throughwater in a swimming pool. Whichproperty of matter does thisobservation show?

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this property shows that the water has free molecules state and it makes easier for diver to cut through the water while compared to the solid which has tight packed molecules thus the driver can easily cut through water

This property shows that the water has free molecules state and it makes easier for diver to cut through the water while compared to the solid which has tight packed molecules thus the driver can easily cut through water

2384.

Discuss the structure and functions of nucleus.

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Nucleus​ is a membrane bound structure that contains the cell’s hereditary information and controls the cell’s growth and reproduction.

Nucleus is present in all eukaryotic cells, they may be absent in few cells like the mammalian RBCs.

The shape of the nucleus is mostly round, it may be oval, disc shaped depending on the type of cell.

It is the command center of a eukaryotic cell and is commonly the most prominent organelle in a cell.

The nuclear envelope is a double membrane that separates the nucleus from the cytoplasm.

All traffic into and out of the nucleus passes through nuclear pores that bridge the double membranes.

Inbound traffic includes all nuclear proteins and ribosomal proteins destined for the nucleolus.

Outbound traffic includes mRNAs and ribosomal subunits.

The nuclear envelope consists of phospholipids that form a lipid bilayer.

The nuclear envelope is perforated with numerous pores called nuclear pores.

The envelope helps to maintain the shape of the nucleus and assists in regulating the flow of molecules into and out of the nucleus through nuclear pores.

The nuclear envelope is connected with the endoplasmic reticulum (ER) in such a way that the internal compartment of the nuclear envelope is continuous with the lumen of the ER.

Chromosomesconsist of DNA, which contains heredity information and instructions for cell growth, development, and reproduction.

When a cell is “resting” i.e. not dividing, the chromosomes are organized into long entangled structures calledchromatinand not into individual chromosomes.

Nucleoplasmis the gelatinous substance within the nuclear envelope.

The nucleolusis not surrounded by a membrane, it is a densely stained structure found in the nucleus.

Functions of Nucleus

It controls the heredity characteristics of an organism.

It main cellular metabolism through controlling synthesis of particular enzymes.

It is responsible for protein synthesis, cell division, growth and differentiation.

Stores heredity material in the form of deoxy-ribonucleic acid (DNA) strands.Also stores proteins and ribonucleic acid (RNA) in the nucleolus.

It is a site for transcription process in which messenger RNA (mRNA) are produced for protein synthesis.

It helps in exchange of DNA and RNA (heredity materials) between the nucleus and the rest of the cell.

Nucleolus produces ribosomes and are known as protein factories.

It also regulates the integrity of genes and gene expression.

The nucleus is one of the most important and the prominent organelles that are present in the cell and in the eukaryotic system the nucleus occupies 10% of the cell volume and performs many important functions.The nucleus consists of the nuclear envelope, the nucleolus, the chromosomes and the outer layer of the nucleus is connected to the endoplasmic reticulum. The space between the 2 layers of the nuclear envelope is fluid filled.The nucleus also consists of the holes in its nuclear envelope called the nuclear pores, these pores help in the exchange of large molecules like the RNA and proteins between the cytoplasm and the nucleus.The chromosomes that are present in the nucleus play an important role in the carrying of information from one generation to another and these chromosomes are the condensed form of genes that code for the characteristics of the organism.

2385.

Who discovered cells, and how?

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2386.

1. Who discovered cells, and how?

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The cell was first discovered and named byRobert Hookein 1665. He remarked that it looked strangely similar to cellula or small rooms which monks inhabited, thus deriving the name. However whatHookeactually saw was the dead cell walls of plant cells (cork) as it appeared under the microscope.

Robert hooke discovered cell in the bark of tree by a self designed microscope.

2387.

LULILLIWho discovered cells, and how?external e11 dhe

Answer»

Cell was discovered by Robert Hook . He took slice of wood and do experiment on it.

Robert Hook discovered cells in 1665. He took a thin piece of a cork and observed it under a traditional microscope and discovered that there were many small room like structures and named these small rooms as cells.

Biography of Robert Hooke, the Man Who Discovered Cells

Known For: Experiments with microscope, including discovery of cells, and coining of the term.

Born: July 18, 1635, in Freshwater, the Isle of Wight, England.

Parents: John Hooke, vicar of Freshwater and his second wife Cecily Gyles.

Died: March 3, 1703, London.

Robert hook discovered cell .

Robert Hook discovered cellular

cell was discovered by Robert hook and took Alice of wood

cell was firstly discovered by Robert hook in 1665. he used a self designed microscope for this. I He observed cells in the cork of the tree which seems too be like small boxes or compartments for him and he named it cell.

2388.

Name the factor for RNA polymerase enzyme which recognises the start and termination signals on DNA for transcription process in bacteria?

Answer»

Thefactors for RNA polymerase enzyme which recognisesthe start and termination signals onDNAfor transcription process in Bacteria are :mRNAand tRNA.

2389.

What is PCR? On what principle is it based on? Describe the process of PCR.

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Polymerase chain reaction is a widely used technique used in molecular biology to exponentially amplify a single copy or a few copies of a specific segment of DNA to generate thousands to millions of copies of a particular DNA sequence.

2390.

Name the thermostable DNA Polymerase employed in PCR.

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Taq polymeraseis athermostable DNA polymerase namedafter thethermophilicbacterium Thermus aquaticus from which it was originally isolated by Chien et al. in 1976. Itsnameis often abbreviated toTaq Polor simplyTaq. ... Therefore, it replaced theDNA polymerasefrom E. coli originally used in PCR.

2391.

.Name two greenhouse gases.

Answer»

carbon dioxide and mithane

methane,carbon dioxide nitrous oxode.

2392.

Amplification of gene for interest may be done by-(A) MMR(C) MRIB PCRD) All of these

Answer»

Answer: B) PCRExplanation:Polymerase chain reaction (PCR) is a method widely used in molecular biology to make many copies of a specific DNA segment. Using PCR, a single copy (or more) of a DNA sequence is exponentially amplified to generate thousands to millions of more copies of that particular DNA segment.

2393.

what is smog and what are its harmful effect?

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Smog is a type of air pollutant. The word "smog" was coined in the early 20th century as a blending of the words smoke and fog to refer to smoky fog, its opacity, and odor.Smogcan cause or aggravate health problems such as asthma, emphysema, chronic bronchitis and other respiratory problems as well as eye irritation and reduced resistance to colds and lung infections. The ozone insmogalso inhibits plant growth and can cause widespread damage to crops and forests.

2394.

what are harmful effect of weed and method to control

Answer»

Short-term memory problems; Severe anxiety, including fear that one is being watched or followed (paranoia); Very strange behavior,

my medication and meditation we can control this

weeds unwanted plant that grow with the main crop and

2395.

2. A doctor/nurse/health-worker is exposed to more sickpeoplethan others in the community. Find out how she/he avoidsgetting sick herself/himself.

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2396.

the production of CO, gas. Can you tell which metabolic pathway tsaking place resultingin the formation of Co,? Where do you think the

Answer»

By the process of respiration, microorganism breakdown glucose and as a result car bon dioxide is emitted. In case of anaerobic respiration also carbon dioxide and ethanol is released by pyruvic acid which is produced from incomplete oxidation of glucose

2397.

f) Chemical used to protect crops is called .

Answer»

The main classes ofcrop protection chemicalsare herbicides, insecticides and fungicides. ... (Generally no syntheticcrop protection chemicalsareused, though minerals, such as copper salts, and naturalchemicals, such as the insecticide rotenone found in the roots of several plants, may be.)

2398.

Why should we prefer to use biological methods to protect our crops?

Answer»

Preventive measures ensure thatthe crop plants are protectedfromtheharmful biotic factors (such as diseases, weeds and insects) and abiotic factors (such as drought and salinity). ... Hence, preventive measures &biologicalcontrolmethods are preferred for protecting crops.

2399.

2. Why is adaptation necessary?

Answer»

Adaptation is the most essential factor in which an organism has to adapt the habitat in which it lives.

Adaptation is the most essential factor of living beings.

From an environmental perspective, adaptation is important to protect and enhance the natural environment. We depend upon healthy, resilient ecosystems to provide life-supporting ecosystem services, while also recognising the intrinsic value of the natural world. We need to adapt in order to conserve it for the benefit of current and future generations. in other words adaption is also important to live an face the severe enviroment conditions.adaption is the process by which plants develop many special characteristics to stand against climate.for example polar bear has develop a thick coating of fur and fat to stand against cold climate

If an organism fails to adapt the particular environment, the immune system fails to work in which the organism becomes ill and even dies due to failure.

2400.

Do taste receptors adapt adaptation ?

Answer»

Yes taste receptors do exhibit adaptation as;

SensoryAdaptation. Sensory adaptationis the process in which changes in the sensitivity of sensory receptorsoccur in relation to the stimulus. All senses are believed to experience sensoryadaptation.