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When cell has stalled DNA replication fork, which checkpoint should be predominantly activated?

Option: 1

G1/S

 

Option: 2

G2/M

 

 

 

Option: 3

M

 

 

Option: 4

Both G2 M and M

 

G2/M should be activated as the cell has stalled DNA replication fork.

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Posted by

Ajit Kumar Dubey

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Posted by

Satyajeet Kumar

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can viruses be called as connecting link between non-living and living as they are nonliving outside and living inside the host cell

virus is both living and non-living. individually it is non-living as it does not have a definite cellular composition also it do not show any life process. but when it comes in contact with any cell or organism it becomes living as it eats the host cell and uses its cellular structure to form new individual and starts showing life processes.

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Posted by

Satyajeet Kumar

Mathew works in a multinational company where the working conditions are tough.
He started taking sleeping pills without consulting a doctor. When his friend Amit
came to know about it he was disturbed and advised Mathew not to do so. He
suggested that Mathew should instead practice yoga to be stress free. Mathew is now
relaxed and happy after practicing yoga.
After reading the above passage, answer the following questions :
(a) Name the class of chemical compounds used in sleeping pills.
(b) Why is it advisable not to take the dose of sleeping pill without consulting a
doctor ?
(c) Pick out the odd chemical compound on the basis of its different medicinal
property : Luminal, Seconal, Phenacetin and Equanil.
(d) List at least two qualities of Amit that helped Mathew to be happy.

 

 

 

 
 
 
 
 

(a)Luminal, seconal and equanil are used to relieve anxiety and stress.
Hence prenacetin is analgestic and used to relieve form pain.
(b) Amit is helpful and concerned. Amit is true friend of Methew and gives right suggestion to his friend.
(c) Sleeping pills contain drugs which may be tranwuilizers or antidepressants. they affect the nervour system and induce sleep. Most of the drugs taken in doses higher than recommended may produce harmful effect and act as poison. Hence, a doctor must always be consulted before taking medicine.
(d) Barbiturates (derivatives of barbituric acid) used in sleeping pills.

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Posted by

Satyajeet Kumar

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Posted by

Satyajeet Kumar

 

A person invested a sum of Rs.750 in a bank at simple interest. After 5 years he received Rs.1200. Find the rate of interest offered by the bank.

 

  • Option 1)

     

    10% p.a           

     

  • Option 2)

     

    11% p a       

     

  • Option 3)

     

    14% p a    

     

  • Option 4)

     

     12% p.a

     

  • Option 5)

     

    20% p.a      

     

1200 -750 = 450

450 = \frac{\left \{ 750\times 5\times R \right \}}{100}= R = \frac{900}{75}

= 12%

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Posted by

rishi.raj

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A person borrowed Rs 1000 at the rate of 10% per annum simple interest. What is the amount he has to pay after 5 years to clear the debt?

  • Option 1)

    Rs.1564          

  • Option 2)

    Rs.1520      

  • Option 3)

      Rs.1500   

  • Option 4)

       Rs.1550

  • Option 5)

     Rs.1532     

P = 1000, R = 10% , T = 5 years

S.I = \frac{PTR}{100} = \frac{\left \{ 1000\times 5 \times 10 \right \}}{100}{ }= 500

Desired\: answer = 1000 + 500 = 1500

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Posted by

rishi.raj

If the difference between compound interest at 8% p.a. and simple interest at 13/2 % p.a. on a certain sum of money for 2 years is Rs. 1820, then find the sum.

  • Option 1)

    Rs. 50000        

  • Option 2)

    Rs. 22000      

  • Option 3)

     Rs.32000

  • Option 4)

     Rs.25000

  • Option 5)

    Rs. 40000    

Difference between C.I and S.I = 1820

= 1820

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Posted by

rishi.raj

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A sum of money compounded annually amounts to Rs.1375 in 5 years and Rs.1980 in 7 years. Find the annual rate of interest

 

  • Option 1)

     

    12%           

     

  • Option 2)

     

     20%                    

     

  • Option 3)

     

    11%

     

  • Option 4)

     

     10%

     

  • Option 5)

     

    15%                        

     

Amount of 5 years = 1375 Rs.

Amount of  7 years = 1980 Rs.

Difference = 1980 -1375 = 605

ThenCI = P \left [ 1+\frac{r}{100} \right ]^{2}

605 = 1375 \left [ 1 + \frac{r}{100} \right ]^{2}

R= 20 %

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Posted by

rishi.raj

A man saves Rs.20000 at the beginning of each year and puts the money in a bank that pays 5% interest per year, interest being compounded annually. How much would be the total savings of the man at the end of 5 years?

(Given that (1.05)5 = 1.276)

  • Option 1)

    Rs. 115920                

  • Option 2)

     Rs.125570           

  • Option 3)

     Rs.140460        

  • Option 4)

     Rs.134460     

  • Option 5)

     None of these

P= 20,000 t = 5 years , R = 5 %

 So the present value

\left [ 20000+\frac{20000}{1.05}+\frac{20000}{1.05\times 1.05}+\frac{20000}{1.05\times 1.05\times 1.05} \right ]

Let this be  by Pv

Desired answer = future value ( at the end of 5 years )

Pv (1+5 % ) 5

Pv (1.05)5

Pv x 1.276

= 115920 Rs.

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Posted by

rishi.raj

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