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Severalmechanismscan cause thelymph nodesto enlarge (swell). ... Inflammation: Infiltration with inflammatory cells during infection or inflammation in a region of a given lymph node. Some immune disorders, such as lupus or rheumatoid arthritis, may also cause generalized lymph nodeswelling.

it's so complicated can u give ans in simple words

It simply means that if lymph nodes swell,your neck swells.And the swelling of lymph nodes is due to inflammation.(getting packed with cells in that tissues due to an infection or a disease)

In case your sister has become uncommunicative, try to console her. She may be suffering from an emotional shock or trauma. Make her feel that she is cared for, no matter what the problem is.

Speak optimistically. Let her understand that you are there to help her battle it out. If she is depressed, acknowledge the loneliness and keep reminding her of her worth. Do not judge her and listen carefully.

Be compassionate and let her advance at her own pace.

c) is the correct answer

C XOR gate is correct answer

2.The two conditions essential for being free of diseaseare: Personal and -domestic .hygiene. Clean environment and surroundings.

during photosynthesis carbon dioxide combines with the water to produce glucose (energy) and oxygen.

Macromolecules" redirects here. For the journal, seeMacromolecules (journal).

"Macromolecular chemistry" redirects here. For the journal formerly known as Macromolecular Chemistry, seeMacromolecular Chemistry and Physics.



Chemical structure of apolypeptidemacromolecule

Amacromoleculeis a very largemolecule, such asprotein, commonly created by thepolymerizationof smaller subunits (monomers). They are typically composed of thousands ofatomsor more. The most common macromolecules inbiochemistryarebiopolymers(nucleic acids, proteins,carbohydratesandlipids) and large non-polymeric molecules (such aslipidsandmacrocycles).[1]Synthetic macromolecules include commonplasticsandsynthetic fibersas well as experimental materials such ascarbon nanotubes.[2][3]

Macromolecules are large complex molecules that occur in colloidal state in intercellular fluid. They are formed by the polymerization of low molecular weight micromolecules.

Polysaccharides, proteins, and nucleic acids are common examples of macromolecules.

plz like it

Macromolecules are large complex molecules that occur in colloidal state in intercellular fluid. They are formed by the polymerization of low molecular weight micromolecules.

Polysaccharides, proteins, and nucleic acids are common examples of macromolecules.

macro molecules in plants are those elements which are needed by plant in much quantity for ex P,Ka,C,H,O,N etc trick to remember these is

pk ca chon sa mugPK

Give examples.Macromoleculesare large complex molecules present in colloidal state in intercellular fluid. They are formed by the condensation of low molecular weight micromolecules and hence are polymeric in nature. Polysaccharides, proteins, and nucleic acids are commonexamplesofmacromolecules.

XYLEM : 1) This tissue contains xylem vessels, tracheids. 2) It helps in the transportation of water from the soil to the roots and to the leaves of the plant. 3) Its movement of water is only in upward direction. 4) the cells of this tissue are dead and works on the principle transpiration.PHLOEM : 1)it contains phloem vessels and companion cells. 2) It transports food and water to all parts of the plant. 3) its transportation is in all direstions. 4) the cells of the this tissue are alive and and consume some energy.

XYLEM conducts water and minerals from the roots to different parts of plant body. where asphloem conduct food materials from leaves to different part of plant body

Answer:- (2) 153 nucleotideExplanation:- Each amino acid is coded by a 'codon' which is a triplet, i.e. 3 adjacent nucleotides. e.g. UGG codes for amino acid Tryptophan.The mRNA which gets translated into a chain of amino acids(polypeptide) has a 'start codon'(AUG-which (mostly) codes for an amino acid Methionine), a 'coding sequence' (code for the corresponding amino acid) and a 'stop codon' (UAG/UAA/UGA- terminates the translation process but do not code for any amino acid).Let's do some maths...1 amino acid = 1 codonand, 1 codon = 3 nucleotidetherefore, 1 amino acid = 3 nucleotide50 amino acid = 3 × 50 nucleotide = 150 nucleotideTherefore for 50 amino acids 150 nucleotides are required + a stop codon, i.e. 150 nucleotide + 3 nucleotide = 153 nucleotide

but answer given options no 3

I am sorry, I completely missed the term 'cistron'.

Cistron- the smallest sequence ofDNA needed to direct thesynthesisof afunctionalpolypeptide; agene.

So, in my previous answer i was talking in terms of mRNA, but the question has been asked in terms of the DNA. As we know, the DNA is double-stranded molecule and RNA is single-stranded. The mRNA is formed by the 'transcription' of the DNA and so has only half set of nucleotides.The 'gene or cistron' is name given to the coding sequence of a DNA molecule, the DNA has complimentary base pairing(double- stranded). So, the cistron will have double number of nucleotides than mRNA.Therefor...153 × 2 = 306 nucleotides

I hope this will help you.Please revert back in case of any doubt.

thank you

Respirationis the biochemicalprocessin which the cells of an organism obtain energy by combining oxygen and glucose, resulting in the release of carbon dioxide, water, and ATP (the currency of energy in cells).

Messenger RNA(mRNA) is a large family of RNA molecules that convey genetic information from DNA to the ribosome, where they specify the amino acid sequence of the protein products of gene expression.

Each codon encodes for a specific amino acid, except the stop codons, which terminate protein synthesis.

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The human body is supported by a framework of bones called the skeleton.

the human body is supported by a framework of bones called the skeleton

skeleton is the framework of Bones which is supported to the human body

skeleton is the answer to your question

The maximum permissible deduction in various kinds of savings under section 80c is Rs 1,50,000

Ans :- A solar furnace is a structure that uses concentrated solar power to produce high temperatures, usually for industry. Parabolic mirrors or heliostats concentrate light (Insolation) onto a focal point.

Darwinism is a theory of biological evolution developed by the English naturalist Charles Darwin (1809–1882) and others, stating that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce. Also called Darwinian theory, it originally included the broad concepts of transmutation of species or of evolution which gained general scientific acceptance after Darwin published On the Origin of Species in 1859, including concepts which predated Darwin's theories. It subsequently referred to the specific concepts of natural selection, the Weismann barrier, or the central dogma of molecular biology. Though the term usually refers strictly to biological evolution, creationists have appropriated it to refer to the origin of life, and it has even been applied to concepts of cosmic evolution, both of which have no connection to Darwin's work. It is therefore considered the belief and acceptance of Darwin's and of his predecessors' work—in place of other theories, including divine design and extraterrestrial origins.

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The testicles are housed in the scrotum just behind the penis. The testicles are the male gonads — the primary male reproductive organs. They have two, very important functions that are very important to the male reproductive system: they produce gametes, or sperm, and they secrete hormones, primarily testosterone.

an organ of the body which responds to external stimuli by conveying impulses to the sensory nervous system.

Abiodiversity hotspotis a biogeographic region that is both a significant reservoir ofbiodiversityand is threatened with destruction. The termbiodiversity hotspotspecifically refers to 25 biologically rich areas around the world that have lost at least 70 percent of their original habitat

A biodiversity hotspot is a region of the Earth that is extremely biologically diverse and also under severe threat due to habitat loss, climate change, or extensive species loss. Guarding these regions from further damage is considered environmentally and culturally important, as they host organisms that are not found anywhere else on Earth.

Forest serves as the reservoir of biodiversity containing different species of plants, animals and all other sorts of living organisms. Many forests includea veryrich diversity of species including most rare and prior to extinct species.

Ans :- Soilhealth is the foundation of productive farming practices. Fertilesoilprovides essential nutrients to plants. Important physical characteristics ofsoil-like structures and aggregation allow water and air to infiltrate, roots to explore, and biota to thrive.

chloroflurocarbons is full form of cfc

thank u so mach

chloro fluro carbon

The silkworm is the larva or caterpillar of the domestic silkmoth, Bombyx Morioption 4

many, many moons ago there was a chicken-like bird. It was genetically close to a chicken but wasn't a full-blown chicken yet. The video calls it a proto-chicken. So proto-hen laid an egg, and proto-rooster fertilized it. But when the genes from ma and pa almost-chicken fused, they combined in a new way, creating a mutation that accidentally made the baby different from its parents. Although it would take millennia for the difference to be noticed, that egg was different enough to become the official progenitor of a new species, now known as... the chicken! So in a nutshell (or an eggshell, if you like), two birds that weren't really chickens created a chicken egg, and hence, we have an answer: The egg came first, and then it hatched a chicken.

Parthenogenesis:Development of an embryodirectly from an egg cellwithout fertilizationis called parthenogenesis. ... Diploid parthenogenesis: When the megagametophyte developswithoutcompleting meiosis, so that the megagametophyte and all cells within it are meiotically unreduced

Meiosis produces cells which are haploid.

This is to mean they have half the number of chromosomes.

When a sperm and a zygote combine, a diploid organism is formed.

This is because they both have half the number of chromosomes.

If meiosis had not occurred then an organism with more than the expected number of chromosomes is formed.

The organism is thus polyploid in nature.

This is an abnormality

In frog, fertilisation of egg is inside the female but the egg is put out not grown in the female.In birds the egg is fertilised and grown inside female.

The events in sequence are

Maturation of egg

Release of egg cell

Fertilization of egg cell

Embryo is embedded in wall of uterus for further development to foetus

Sexually reproducing species have a better chance of survival because their variation during reproduction can help the newer offspring survive the changes in enviorment

The approaches used to enhance crop yield are:

Plant Early, Plant EffectivelyChoosing the right time to plant is often the most important part of planting. The best strategy to use to increase yields is: if your soil is ready, start planting. There are tests you can perform on your soil to see if it is ready for planting. Today’s hybrid seeds create a more sustainable product, but knowing if your field is ready for early planting is just as important. Planting early can result in increased yields by taking advantage of unexpectedly early favorable soil conditions.

Practice Seasonal Soil RotationWhen you are planting season-by-season, it is important to understand how planting recurring crops can affect your overall yield. Planting corn in consecutive years has been proven to be less effective for optimal yields. This means that corn-on-corn planting should only be considered when your soil conditions are strong enough, or your land mass is limited. If you don’t have access to either, you may need to consider planting alternative crops in alternating years — such as soybeans. Planting an alternating crop helps to diversify the demands on your soil. This results in crops that not only yield more, but continually produce year in and year out.

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can be a bit shorter

formation of lost part is called regeneration

the process of producing new organisms by existing organismsof a species is called reproduction

fission- in the process of fission a unicellular organism splits to form two new organism.

fragmentation-the breaking up of the body of a simple multicellular organism into two pieces on maturing ,each of which subsequently grows to form a complete new organism,is called fragmentation.

regeneration-the process of getting back a full new organism from it's body parts is called regeneration.

budding-in budding,a small part of the body of a parent organism grows out as a bud which then detaches and become a new organism.

reproduction-the production of new organisms from the existing organisms of the same species is known as reproduction

-विश्व व्यापी आर्थिक मंदी-1929 से 1932|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| प्रथम विश्व युद्ध से उत्पन्न परिस्थियां ही आर्थिक मंदी का कारण बनी । युद्ध काल में सैनिक सामग्री की मांग बढ़ जाने से उद्योगों का विस्तार हुआ। मजदूरी की दर में वृद्धि हुई। लाभांश में वृद्धि हुई। अंततः प्रथम विश्व युद्ध के बाद उद्योगों की तरफ लोग झुकते चले गये।जिससे कृषि का उत्पादन बढ़ा। खाद्यान की कीमत गिर गई। कृषको की क्रय क्षमता घट गई और इधर कारखानो से मजदूरो की छटनी शुरू हो गई। उद्योगपतियों को भारी मुनाफा हुआ लेकिन श्रमिको को नहीं। 1923-29 के बीच मजदूरी 8%बढी जबकि मुनाफा 72% । इस आकंड़े से स्पष्ट है कि सामान्य जनता की क्रय शक्ति इतनी नहीं थी कि वह इस तेज़ी को थाम सके। उत्पादन की गति को शाख द्वारा 1929 तक संभाला गया। दुर्भाग्य से मालिक न तो कीमत घटाने को तैयार थे और ना ही मजदूरी बढ़ाने को। अतः उपभोक्ता वस्तु की भरमार बनी रही।

अचानक कीमत नहीं गिरती यदि अमेरिका अतिरिक्त माल का निर्यात करता। निर्यात गिर रहा था।क्योकि यूरोपीय देश अमेरिकी माल खरीदने को तैयार नहीं थे। अमेरिका स्वयं अनेक माल के आयात पर अधिक से अधिक सीमा शुल्क लगाता था। अमेरिका यूरोपीय माल खरीदने को तैयार नहीं था। यूरोप के पास डॉलर की कमी हो गई। ऐसी परिस्थिति में यूरोपीय देश अमेरिका का ऋण नहीं चुका सकते थे।

एशिया में स्वदेशी आंदोलन ,रूस में बोल्शेविक क्रांति तथा युद्ध के बाद यूरोप के नए राज्य सरक्षणवादि सिद्धान्त का प्रयोग किये । विश्व के विभिन्न देशो में सोने का विषम विभाजन मंदी का महत्वपूर्ण कारण माना जाता है। युद्ध के समय बहुत से देशो को स्वर्णमान का परित्याग करना पड़ा। 1924 से 29 में यूरोप के अनेक राष्ट्रों ने पुनः स्वर्णमान को अपना लिया।

स्वर्णमान को सुचारू रूप से संचालित करने के लिए विभिन्न राज्यो के पास प्रयाप्त मात्रा में स्वर्ण भण्डार आवश्यक था।इस समय विश्व का अधिक सोना अमेरिका में एकत्र होने लगा । क्योकि उसके क़र्ज़ की अदायगी सोने के रूप में की जा रही थी । इसी प्रकार फ़्रांस को भी क्षतिपूर्ति की अधिकाँश राशि सोने के रूप में की जा रही थी । एक अनुमान के अनुसार विश्व का 60% सोना अमेरिका और फ्रांस के पास था । सोने की अन्य राज्यो में कमी हुई । जिससे मुद्रा का मूल्य बढ़ गया और वस्तुओ की कीमत गिर गई। सट्टे में वस्तु की कीमत बढ़ा चढ़ा कर बेचने से भी अविश्वनियता बढ़ी।

अमेरिका के सारे कारखाने व् बैंक दिवालिया हो गए। अमेरिका से यूरोप को ऋण मिलना समाप्त हुआ। मात्र ussr इसके प्रभाव में नहीं था। इस आर्थिक संकट से जर्मनी विशेष रूप से प्रभावित हुआ।

Infectious diseases are caused by pathogens such as bacteria, viruses, fungi and parasites. These pathogens can enter the body through the air we breathe, the food and drink we consume or through openings in the skin, such as cuts.

As an example, think of a person who has a cold. That person may cough into his or her hand and then touch a doorknob, thus placing the cold virus on that doorknob. The virus may die on the doorknob, but it's also possible that the next person to touch the doorknob will pick it up. If that person then touches food with the unwashed hand and consumes the food, the virus is now inside the body.

कोई भी सिक्स disease को फाइंड कर ना हे picture के सात

b is the correct option

Answer. 4)Haemopilia

Explanation:

In the most common types of hemophilia, the faulty gene is located on the X chromosome.This means that hemophilia almost always occurs in boys and is passed from mother to son through one of the mother's genes. Most women with the defective gene are simply carriers and experience no signs or symptoms of hemophilia

4 .. Haemophilia option correct

Humanshave two kidneys and each kidney is supplied with blood from the renal artery. The kidneys remove from the blood the nitrogenous wastes such as urea, as well as salts and excess water, andexcretethem in the form of urine.