Mention the role of the codons AUG and UGA during protein synthe
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    Subject
    Biology

    Class

    CBSE Class 12

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    CBSE Class 12 Biology Solved Question Paper 2011

    Multiple Choice QuestionsShort Answer Type

    1.

    Name the type of cell division that takes place in the zygote of an organism exhibiting haplontic life cycle.

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    2. Write the scientific name of the microbe used for fermenting malted cereals and fruit juices.
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    3. Write the unit used for measuring ozone thickness.
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    4. Name the event during cell division cycle that results in the gain or loss of chromosome.
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    5.

    How can bacterial DNA be released from the bacterial cell for biotechnology experiments?

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    Answer
    6. Write the importance of cryopreservation in conservation of biodiversity.
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    7. Mention the role of the codons AUG and UGA during protein synthesis.

    AUG is the start codon that initiates the protein synthesis. UGA is the stop codon that signals for the termination of protein synthesis.
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    8. Normally one embryo develops in one seed but when an orange seed is squeezed many embryos of different shapes and sizes are seen. Mention how it has happened.
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    9.

    How do histones acquire positive charge?

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    10. Why is CuT considered a good contraceptive device to space children?
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    NCERT Solutions
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