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    • Posted by Bhavya Goswami 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Shivam Chaurasia 6 years, 7 months ago

    Since viruses contai rna which highly reactive due to its this nature it could acquired trait which would be resistant for such anti oxidant.as we know variation akways provide a way to survive better in any condition .

    0Thank You

    Avantika Tayal 6 years, 7 months ago

    Virus mutate at a very fast rate.even if the companies make anti oxidants it wont work as the virus has developed a mutation which have the ability to resist the effect of anti oxidants.

    2Thank You

    ANSWER

    • Posted by Gurpreet Singh 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    A cloning vector is a small piece of DNA that can be stably maintained in an organism, and into which a foreign DNA fragment can be inserted for cloning purposes. The cloning vector may be DNA taken from a virus, the cell of a higher organism, or it may be the plasmid of a bacterium.

    0Thank You

    ANSWER

    • Posted by Raza Ansari 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    Types of Sexually Transmitted Infections Human Immunodeficiency Virus (HIV) and Acquired Immune Deficiency Syndrome (AIDS) ... Chlamydia. ... Gonorrhea. ... Pelvic Inflammatory Disease (PID) ... Genital Warts and Human Papillomavirus (HPV) ... Genital Herpes (HSV-1, HSV-2) ... Syphilis. ... Symptoms That Suggest Sexually Transmitted Infections May Include:

    0Thank You

    Yogita Ingle 6 years, 7 months ago

    Diseases which are transmitted through sexual intercourse with infected person are called sexually transmitted diseases or venereal diseases or reproductive tract infections. (RTI)

    Gonorrhea, syphilis, genital herpes, genital warts, hepatitis, AIDS, chlamydiasis are sexually transmitted diseases.

    1Thank You

    ANSWER

    • Posted by Love Is Life 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Sia ? 6 years, 7 months ago

    The developing zygote having group of cells that develop into tissues and organs, is called embryo.

    1Thank You

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    An embryo is an early stage of development of a multicellular diploid eukaryotic organism. In general, in organisms that reproduce sexually, an embryo develops from a zygote, the single cell resulting from the fertilization of the female egg cell by the male sperm cell. ... The result of this process is an embryo.

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    • Posted by Vivek Gupta 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    #Homemade. New 6 years, 7 months ago

    In such cases , mother with one of her two alles of *** chromisomes is affected thus carrier of any chromosomal disease .then their daughter is the carrier

    0Thank You

    Avantika Tayal 6 years, 7 months ago

    The mother is carrier for that disease and the father is normal.that is why the daughter is disesased

    1Thank You

    Love Is Life 6 years, 7 months ago

    if there parents of parent have any desease then can carry

    1Thank You

    ANSWER

    • Posted by Vrishti Verma 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Meghna Thapar 5 years, 8 months ago

    Tranquilizer is a medicinal drug taken to reduce tension or anxiety. The principal minor tranquilizers are the benzodiazepines, among which are diazepam (Valium), chlordiazepoxide (Librium), and alprazolam (Xanax). These drugs have a calming effect and eliminate both the physical and psychological effects of anxiety or fear. Tranquilizers function in the body by depressing the central nervous system, inducing a sedation-like state. ... Major tranquilizers are also referred to as antipsychotics since they are primarily used to treat mental disorders, such as schizophrenia. 

    0Thank You

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    • Posted by Bhavya Goswami 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Bhavya Goswami 6 years, 7 months ago

    ?? thank u very much

    0Thank You

    Yogita Ingle 6 years, 7 months ago

    Repetitive DNA is the non-coding sequence of DNA that contains segments that are repeated several times in the genome of an individual. The repetitive DNA sequences are called variable number of tandem repeats that are dispersed throughout the genome and constitute hypervariable dispersed repetitive sequences.

    Satellite DNA are DNA sequences that contain highly repetitive DNA. Satellite DNA is a type of repetitive DNA and it classified into minisatellites, microsatellites and minivariant repeats, based on the number of repetitive units, the number of base pairs in each unit and the base composition of the units.

    3Thank You

    ANSWER

    • Posted by Chayanika Deka 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Sia ? 6 years, 7 months ago

    Biopiracy is the practice of commercially exploiting naturally occurring biochemical or genetic material, especially by obtaining patents that restrict its future use, while failing to pay fair compensation to the community from which it originates.

    1Thank You

    Cute_Girl_0003 ?? 6 years, 7 months ago

    Biopiracy - it is defined as the use of bioresources by multinational companies & other organisation, without proper authorisation from the countries & concerned people without compensatory payment.

    2Thank You

    ANSWER

    • Posted by Chayanika Deka 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    No both are not same.

    1Thank You

    Bhuvan Verma 6 years, 7 months ago

    no

    1Thank You

    Cute_Girl_0003 ?? 6 years, 7 months ago

    No, biopiracy or bioreactor are not same.

    1Thank You

    ANSWER

    • Posted by Oyar Mibang 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    #Homemade. New 6 years, 7 months ago

    Cbse have introduced objective type questions of 20 marks in every subject.

    0Thank You

    ANSWER

    • Posted by Himanshi Dwivedi 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    Some advantages of oviparous reproduction over viviparous are : In viviparous reproduction, during pregnancy, the feeding and locomotion of the mother is affected which subsequently effects maternal and offspring survival. There is no such risk in oviparous fertilization.

    0Thank You

    Yogita Ingle 6 years, 7 months ago

    Advantage- in this, young one develop inside body of female and so gets better nourishment,proper development and better chances of survival.

    0Thank You

    ANSWER

    • Posted by Shivani Sharma 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 0 answers
    ANSWER

    • Posted by Ishu Khapra 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Srishti Choudhary ✍⏳ 6 years, 7 months ago

    U will get in this app...mycbseguide.app

    1Thank You

    ANSWER

    • Posted by Saveksha Kadian 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 6 answers

    Amrita Mohanty 6 years, 7 months ago

    Ya ofcourse diagram give the 50% of answer if we will not write answer diagram will help us to gain marks

    0Thank You

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    Yes diagrams is very important for board exams.

    0Thank You

    Mrutyunjay Khatua 6 years, 7 months ago

    Yes diagram is very important....In some of the questions without writing much in words u can explain it through diagram....

    1Thank You

    Sai Babu T 6 years, 7 months ago

    In Biology, Diagrams and presenting answers in the form of equations are very important. Any question, the diagram and the description each part carries generally 50% of marks of that particular question. 

    1Thank You

    Ďãřşháñăã Yadav ? ? ? 6 years, 7 months ago

    yes it's important. without diagram they will deduct your half marks.

    1Thank You

    Jaat Sahil 6 years, 7 months ago

    Yes

    1Thank You

    ANSWER

    • Posted by Harshit Bajpai 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Sai Babu T 6 years, 7 months ago

    The accelerated rates of species extinctions that the world is facing now are largely due to human activities. There are four major causes (‘ The Evil Quartet ’ is the sobriquet used to describe them). 

    1. Habitat loss and fragmentation. 
    2. Over-exploitation: 
    3. Alien species invasions:
    4. Co-extinctions: 

    1Thank You

    ANSWER

    • Posted by Cute_Girl_0003 ?? 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 4 answers

    Shivam Chaurasia 6 years, 7 months ago

    Dnase are dna digesting enzyme which we are seen during biochemical proof of transforming principes.

    0Thank You

    Cute_Girl_0003 ?? 6 years, 7 months ago

    Haa bol

    0Thank You

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    Hllo cutei

    1Thank You

    Kalpana Jha 6 years, 7 months ago

    DNA: -It is a nucleic acid. -Function of DNA is storage of genetic material. DNase: -It is an enzyme. -Function is to digest DNA.

    4Thank You

    ANSWER

    • Posted by Manisha Bai 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Meghna Thapar 5 years, 8 months ago

    In the 1950's, biochemists Stanley Miller and Harold Urey, conducted an experiment which demonstrated that several organic compounds could be formed spontaneously by simulating the conditions of Earth's early atmosphere. ... After allowing the experiment to run for one week, they analyzed the contents of the liquid pool. The Miller-Urey experiment provided the first evidence that organic molecules needed for life could be formed from inorganic components. Some scientists support the RNA world hypothesis, which suggests that the first life was self-replicating RNA. ... Simple organic compounds might have come to early Earth on meteorites.

    0Thank You

    ANSWER

    • Posted by Soumya Kumari 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Meghna Thapar 5 years, 7 months ago

    The ‘Compatible Genes Hypothesis’

    This hypothesis predicts that not all females choose the same genes, but rather, each of them prefers particular genes. Such differences in preference can be due to genetic incompatibility. In this way, genetic benefits to females are due to the interaction between maternal and paternal genomic contributions. So, this hypothesis predicts that females pursue EPCs to augment the chances of finding compatible partners who in turn, will confer to the EPY higher fitness than their paternal half-sibs. 

    0Thank You

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    • Posted by Soumya Kumari 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Soumya Kumari 6 years, 7 months ago

    And also between the above two and sedative drug??

    1Thank You

    ANSWER

    • Posted by Soumya Kumari 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Soumya Kumari 6 years, 7 months ago

    Histamine kya hota hai???

    0Thank You

    Vaishanavi Sharma 6 years, 7 months ago

    Antihistamines are the drug which reduce or abolish the effect of histamine released in body and hence prevent from allergic reaction. Ex:- Brompheniramine (Dimetapp).

    1Thank You

    ANSWER

    • Posted by Soumya Kumari 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Shivam Chaurasia 6 years, 7 months ago

    Because they do not attain purple or blue colour during staining.

    0Thank You

    ANSWER

    • Posted by Soumya Kumari 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Shivam Chaurasia 6 years, 7 months ago

    Skin study is epidermiology .

    0Thank You

    ANSWER

    • Posted by Aleena Elizabeth Vinod 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    Gel electrophoresis is a technique commonly used in laboratories to separate charged molecules like DNA?, RNA? and proteins? according to their size. Charged molecules move through a gel when an electric current is passed across it.

    1Thank You

    Rani Jojo Jojo 6 years, 7 months ago

    Gel electrophoresis is a technique used to separate DNA fragments based on their size .Dna first separated and purified from any nucleated cell. It is then fragmneted by restriction endonuclease.The fragments are loaded in to the well of agarose gel in a trayand one electode is connected to cathode and other end to a cathode.when passing electricity DNA. Fragments separated ny its electophoretic mobility.It then separated in to bands.

    2Thank You

    ANSWER

    • Posted by Hritik Dagar 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    1. heat (metal or glass) and allow it to cool slowly, in order to remove internal stresses and toughen it. "copper tubes must be annealed after bending or they will be brittle" 2. BIOCHEMISTRY recombine (DNA) in the double-stranded form.

    0Thank You

    Hritik Dagar 6 years, 7 months ago

    Sorry primer is attach 3'to5'

    0Thank You

    Rani Jojo Jojo 6 years, 7 months ago

    It is the attcahment of RNAprimer to the 5' end of the new Dna strand in pcr technique to amplify gene of interest.

    1Thank You

    ANSWER

    • Posted by Suraj Patel 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 4 answers

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    Tapetum is the innermost layer of the microsporangium. It provides nourishment to the developing pollen grains. During microsporogenesis, the cells of tapetum produce various enzymes, hormones, amino acids, and other nutritious material required for the development of pollen grains.

    1Thank You

    Yogita Ingle 6 years, 7 months ago

    Tapetum is the innermost layer of the microsporangium. It provides nourishment to the developing pollen grains. During microsporogenesis, the cells of tapetum produce various enzymes, hormones, amino acids, and other nutritious material required for the development of pollen grains. It also produces the exine layer of the pollen grains, which is composed of the sporopollenin.

    1Thank You

    Vedprakash Dhakad 6 years, 7 months ago

    Nourish the pollen grains

    1Thank You

    Hritik Dagar 6 years, 7 months ago

    Provide the nourishment of pollen grain

    1Thank You

    ANSWER

    • Posted by Jaat Sahil 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Hritik Dagar 6 years, 7 months ago

    It is the process in which increase the level of productivity, vitamins, minerals,and protien

    1Thank You

    Vaishanavi Sharma 6 years, 7 months ago

    SCP are dried single called organisms or total protein extracted from pure or mixed culture of microbes such as algae, yeast, fungi or bacteria used as substitute for protein-rich food for Humans as well as animals

    1Thank You

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    • Posted by Mohammad Dilshad 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Jaat Sahil 6 years, 7 months ago

    A female reproductive organ which produces ova or egg

    0Thank You

    ANSWER

    • Posted by Shivani Pandey 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 0 answers
    ANSWER

    • Posted by Sanjaya Mallick 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Vaishanavi Sharma 6 years, 7 months ago

    1:- In fruitflie has many types of hereditary variations that can be seen with low power of microscopes. 2:- they complete their life cycle in 1_2 weeks. 3:- a single mating could produce a large no. Of progeny flies.

    0Thank You

    Tanu Prashar 6 years, 7 months ago

    1. It can be grown in simple synthetic medium. 2. It can complete the life cycle in two weeks i.e it has short life cycle. 3. It shows dimorphism.

    1Thank You

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    • Posted by Fhvj Jbb 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Sajid Ali 6 years, 7 months ago

    Gemitogenesis is the process by which the secondary sparmatocytes converted to spermatozoa.

    0Thank You

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