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Full details about immunity

Posted by Laina Gupta 1 year ago

CBSE > Class 12 > Biology

1 answers

Komal Gola 11 months, 4 weeks ago

Overall ability of the body to fight disease causing pathogen by immune system is called immunity

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Explain predation in detail

Posted by Divya Dave 1 year ago

CBSE > Class 12 > Biology

2 answers

Prithvii K 11 months, 4 weeks ago

Interaction between two species in which one is called predator and other is prey. e.g, Cat(predator) eats mouse(prey). This happens to maintain the balance of the ecosystem and to survival of the species.

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Khushbu Yadav 1 year ago

Gene therapy

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Mention the source organism of the gene cry I ab and its target pest

Posted by Komal Solanki 1 year, 1 month ago

CBSE > Class 12 > Biology

1 answers

Mahak Choudhary 10 months, 2 weeks ago

Source organism is bacillus thuringiensis and its target pest is corn borer( type of beetle).

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Chapter 7 notes

Posted by Ridhima Kapoor 1 year, 1 month ago

CBSE > Class 12 > Biology

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Listed below are all reproductive tract infection except a) genital hepres b) filariasis c) trichomoniasis d) syphilis

Posted by Shivank Dev 1 year, 1 month ago

CBSE > Class 12 > Biology

2 answers

Saksham Garg 1 year ago

Filariasis because "Filariasis is a disease caused by a chronic mosquito-borne parasitic infection. Chronic infection can lead to swelling of the extremities, hydroceles, and testicular masses."

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Ashutosh Singh 1 year ago

Filariasis

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Reproductive organs

Posted by Adham Khan 1 year, 1 month ago

CBSE > Class 12 > Biology

1 answers

Adarsh Jaiswal 1 year, 1 month ago

Male Reproductive organ ***** , Testis , Vas defence Seminal vesical, prostate, Bulbutheral

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how sexual reproduction enables these organisms to survive during unfavorable conditions?Why is sexual reproduction favoured under such conditions?

Posted by Shruti Kumari 1 year, 1 month ago

CBSE > Class 12 > Biology

0 answers

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How many types of RNA polymerase are there in an eukaryotes cell? Mention which one of them transcribes hnRNA

Posted by Muskan Kashyap 1 year, 1 month ago

CBSE > Class 12 > Biology

4 answers

Loknath Chamuah 1 year ago

Three types of RAN polymers are there Rna polymers || transcribed hnRna

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Adarsh Jaiswal 1 year, 1 month ago

Three types of RNA polymerase tRNA ,mRNA, rRNA

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Anushka Singh 1 year, 1 month ago

Three different nuclear RNA polymerases are found in eukaryotic cells. RNA polymerase I: It is in charge of generating the majority of ribosomal RNA (rRNA) transcripts. RNA polymerase II: It is responsible for converting protein-coding genes into messenger RNA (mRNA). RNA polymerase III: It is responsible for converting rRNA genes into tiny RNAs such as transfer RNA (tRNA) and 5S rRNA.

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Darshni Darsh 1 year, 1 month ago

What is male axcceory duct

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Code no RSPl/2

Posted by Rahul Surya 1 year, 1 month ago

CBSE > Class 12 > Biology

0 answers

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In which food would you find lactic bacteria mantion some of their useful application

Posted by Anime Docs 1 year, 1 month ago

CBSE > Class 12 > Biology

1 answers

Satyaki Yadav 1 year, 1 month ago

Lactic Acid Bacteria (LAB) is generally found in Curd. One of it's major qualities is that it increases the nutrition value of curd by increasing the content of Vitamin B12.

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Notes of biotechnology

Posted by Jhalak Kirad 1 year, 2 months ago

CBSE > Class 12 > Biology

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define.. 1. Haemophilia. 2. Sickle -cell anemia. 3. Colour - blindness

Posted by Khushi Jaiswal 1 year, 2 months ago

CBSE > Class 12 > Biology

2 answers

Anushka Singh 1 year, 1 month ago

Sickle cell anemia:- This defect is caused by the substitution of Glutamic acid by Valine at the sixth position of the beta globin chain of the hemoglobin molecule

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Sayeqa Anjum 1 year, 1 month ago

Colour blindness- Defect in ability of cones to perceive red and green colour is called colour blindness

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Drugs addiction project

Posted by Dhruv Pratap Singh Dhruv Pratap Singh 1 year, 2 months ago

CBSE > Class 12 > Biology

1 answers

Rajesh Yadav 1 year, 2 months ago

Don't post personal information, mobile numbers and other details.
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Kya gene ka pair hota hai

Posted by Neeru Sahu 1 year, 2 months ago

CBSE > Class 12 > Biology

3 answers

Saksham Garg 1 year ago

Ha, gene always occurs in pair

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Adarsh Jaiswal 1 year, 1 month ago

Ha Pair me hote hai aor uuse allele kahte hai

1Thank You

Komal Gupta 1 year, 2 months ago

Genes pair me hi hote h aur uss gene ke ek bhaag ko allele kehte h

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describe the experiment conducted by hershey and chase to prove that DNA is genetic material

Posted by Mohammed Munaf 1 year, 2 months ago

CBSE > Class 12 > Biology

1 answers

Anushka Singh 1 year, 1 month ago

Toppr Hershey and Chase performed a series of experiments to prove that the DNA is the genetic material. They took bacteriophages that contained the radioactive sulphur and radioactive phosphorous. The bacteriophages were then made to infect the bacterial cells and these cells were then studied. The cells that were infected with the radioactive sulphur had protein with radioactive sulphur and not the genetic material. The bacterial cells that were infected with the radioactive phosphorus and phosphorous in the cells. This lead Hershey and Chase to conclude that DNA is the genetic material.

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Discrbe genitic disorder ?

Posted by Krish Yadav 1 year, 2 months ago

CBSE > Class 12 > Biology

3 answers

Vishal Potter 10 months ago

Genetic disorders like down's syndrome, Turner syndrome

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Anushka Singh 1 year, 1 month ago

Genetic disorders are due to alterations or abnormalities in the genome of an organism. A genetic disorder may be caused by a mutation in a single gene or multiple genes. It can also be due to changes in the number or structure of chromosomes.

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Anshul Pratap Singh 1 year, 2 months ago

If there is any change ment during splitting of chromosomes i.e during cell division then this is known as genetic disorder Ex . Turner syndrome .this occur due to trisomy of 21 pair of chromosomes

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What are the outbreeding devices promote cross pollination

Posted by Shruti Mishra 1 year, 2 months ago

CBSE > Class 12 > Biology

1 answers

Anil Tadvi 1 year, 2 months ago

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Characters of wind pollinated flowers

Posted by Safeen Sab 1 year, 2 months ago

CBSE > Class 12 > Biology

4 answers

Nandini Upadhyay 1 year, 1 month ago

Non sticky, light pollen grains and feathery .they do not have colour or fragrance

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Ankit Anagh 1 year, 1 month ago

They are Not Colourful to Conserve energy. They are released in Large Amounts. They are Feathery.

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Sarita Mishra 1 year, 2 months ago

A large amount of pollen is formed so that the pollination can occur properly. The flowers formed are generally unisexual, dull-colored, and odorless. The flowers possess a sticky stigma so that pollen can bind easily.

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Neha Thakur 1 year, 2 months ago

They doesn't produce nactar They are not colourull

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What is genes

Posted by Gk Gk 1 year, 2 months ago

CBSE > Class 12 > Biology

1 answers

Anshul Pratap Singh 1 year, 2 months ago

Part of chromosomes that having information related to genetic A chromosomes have many no. of gene

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How to sperm enter in female

Posted by Himan Shu 1 year, 2 months ago

CBSE > Class 12 > Biology

2 answers

Anshul Pratap Singh 1 year, 2 months ago

By process know as insemination

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Rishab Kumar Kumar 1 year, 1 month ago

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Why sino atrial node is called pacemaker

Posted by Amit Kumar 1 year, 2 months ago

CBSE > Class 12 > Biology

1 answers

Anushka Singh 1 year, 1 month ago

The sino-atrial (SA) node is a specialized bundle of neurons located in the upper part of the right atrium of the heart. The cardiac impulse originating from the SA node triggers a sequence of electrical events in the heart, thereby controlling the sequence of muscle contraction that pumps blood out of the heart. Since the SA node initiates and maintains the rhythmicity of the heart, it is known as the natural pacemaker of the human body.

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Heart of fish and crocodile are homologous or analogous

Posted by Moni K 1 year, 2 months ago

CBSE > Class 12 > Biology

1 answers

Amit Kumar 1 year, 2 months ago

Homologous

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Explain the process of sawage treatment

Posted by Pooja Surliya 1 year, 2 months ago

CBSE > Class 12 > Biology

3 answers

Sumit Yadav 1 year, 2 months ago

23650592723

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Sumit Yadav 1 year, 2 months ago

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Naveen Sharma 1 year, 2 months ago

Sewage mainly includes human excreta and contains large amounts of organic waste and pathogenic microbes. Thus it is necessary that waste should be made less polluted before discharging into water bodies. The process of sewage treatment is explained in the following steps: a) Primary treatment - In this treatment, filtration and sedimentation process is applied to remove large and small particles. Filtration process removes the floating debris by passing it through mesh wire screens. Then sedimentation removes the soil and small pebbles. The sediment is known as primary sludge and the supernatant is known as primary effluent. The effluent then enters the secondary treatment. b) Secondary treatment - In this treatment, large aeration tanks containing primary effluent are constantly agitated with a continuous supply of air. Thus aerobic microbes grow vigorously consuming a major part of the organic effluent reducing biological oxygen demand (BOD) of the effluent. The sewage is then passed into the settling tank where bacterial flocs settle and now it is known as activated sludge. Some of the activated sludge is again passed into aeration tank to serve as inoculum while rest of it enters into large tanks called anaerobic sludge digesters. Here anaerobic bacteria grow to produce a mixture of gases such as methane, hydrogen sulphide and carbon dioxide to form biogas. This effluent can then be released into natural water bodies

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What is Gene ?

Posted by Shagufta Yasmeen 1 year, 3 months ago

CBSE > Class 12 > Biology