Recent questions tagged ch12

While creating genetically modified organisms, genetic barriers are not respected. How can this be d

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<div>Name the five key tools for accomplishing the task of recombinant DNA technology and mention th

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What is meant by the term biopesticide? Name and explain the mode of action of popular biopesticide.

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List the disadvantages of insulin obtained from the pancreas of slaughtered cows and pigs.

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Explain with the help of one example how genetically modified plants can (a) Reduce usage of chemica

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What are the various advantages of using genetically modified plants to increase the yield of the cr

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<div>Highlight five areas where biotechnology has influenced our lives.</div><div><br></div><div>The

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Define transgenic animals. Explain in detail any four areas where they can be utilized?<br>

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A patient is suffering from ADA deficiency, can he be cured? How?

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Bt cotton is resistant to pest, such as lepidopteron, dipterans and coleopterans. Is Bt cotton also

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When a foreign DNA is introduced into an organism, how is it maintained in the host and how is it tr

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Gene therapy is an attempt to correct genetic defect by providing the normal gene into the indi

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Define antigen and antibody. Name any two diagnostic kits based on them.

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Taking examples, under each category, discuss upstreaming and downstream processing.

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Why is it that the line of treatment for a genetic disease is different from infectious disease.?

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What is recombinant DNA vaccine? Give two examples.

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Gene expression can be controlled with the help of RNA. Explain the method with an example.

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Discuss the advantages of GMO.

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For which variety of Indian rice, the patent was filed by a USA company?

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With respect to understanding diseases, discuss the importance of transgenic animal models.

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How was insulin obtained before the advent of rDNA technology? What were the problems encountered?

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How is mature, functional insulin hormone different from prohormone form?<br>

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ELISA technique is based on the principles of antigen-antibody interaction. Can this technique be us

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PCR is a useful tool for early diagnosis of an infectious disease. How.

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Give the full form of ELISA. Which disease can be detected using it? <br>Discuss the principle under

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In view of the current food crisis, it is said that we need another green revolution. Highlight the

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Name the first transgenic cow. Which gene was introduced in this cow?

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Can a disease be detected before its symptoms appear? Mention the principle involved.

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Expand GMO.

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What is the minimum energy that must be given to a H- atom in ground state so that it can emit an $H_{\gamma}$ in Balmer series? If the angular momentum of the system is conserved what would be the angular momentum of such $H_{\gamma}$ proton ?

asked Jul 8, 2016 by meena.p

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A potential difference applied to an - ray tube is $5kv$ and the current through it is $3.2 \;mA$ Then the number of electrons striking the target per second is

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An energy of $24.6\;ev$ is required to remove one of the electrons in (ev) is required to remove both the electrons from a neutral helium atom is

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If an $\alpha$ particle collides head on with a nucleus , What is impact parameter?

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During x- ray formation if voltage is increased,

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What would be the radius of second orbit of $He^{+}$ ion ?

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The size of the atom is proportional to

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An electron makes a transition from orbit $n=4$ to the orbit n=2 of a hydrogen atom. What is the wave length of the emitted radiation? (R= Rydberg's constant}

asked Jul 8, 2016 by meena.p

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An electron is moving round the nucleus of a hydrogen atom in a circular orbit of radius r. The coulomb force $\overrightarrow{F}$ between the two is :

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Hydrogen atoms are excited from ground state to the state of principle quantum number 4, Then the no of spectral lines observed will be

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Name the spectral series of hydrogen spectrum lying in the infrared region .

asked Jul 8, 2016 by meena.p

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How much is the radius of Bohr's innermost orbit ?

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Write an empirical relation for parchen series lies of hydrogen spectrum

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What is the angle of scattering for zero impact parameter ?

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Name the series of hydrogen spectrum which has least wave length

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When is $H_{\alpha}$ line of the Balmer series in the emission spectrum of hydrogen atom obtained ?

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In which series of hydrogen spectrum , the transition involve the largest changes of energy ?

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The energy of an electron in an excited hydrogen atom is $-3.4 \;ev$ calculate the angular momentum of the electron according to Bohr's theory .

asked Jul 8, 2016 by meena.p

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When electron falls from a higher energy to a lower energy level , the difference in the energies appear in the form of electromagnetic radiation . Why cannot it be emitted as other form of energy?

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The mass of a H- atom is less than the sum of the mass of a proton and electron , why is this ?

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The simple Bohr model is not applicable to $_2He^4$ atom because

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