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Consider the following statements regarding DNA replication and choose the correct answer:
1. The very first requirement of DNA synthesis is the presence of a template or plan along which the new strand is to be constructed
2. The second requirement is of a DNA-dependent-DNA polymerase or simply DNA polymerase enzyme
3. A DNA Pol cannot join two free nucleotides; one of them must be anchored by hydrogen bonds to a DNA strand
4. Replication takes place bidirectionally
In the given diagram, the triangle represents the set of people who possess a car; the square represents the set of people who possess a house; and the circle represents the set of people who possess gold. The total number of people who possess only one among the three, that is, house, car or gold, is:
In the given diagram, the triangle represents the set of people who possess a car; the square represents the set of people who possess a house; and the circle represents the set of people who possess gold. What is the total number of people who possess a house and gold but do not have a car?
In the given diagram, triangle represents the set of people who possess a car; square represents the set of people who possess a house; and circle represents the set of people who possess gold. What is the total number of people who possess a car and gold but do not have a house?
When the viruses are cultivated in the medium containing radioactive Sulphur, then these viruses possess radioactive DNA but not radioactive protein.
Which of the following statements is/are incorrect? 1. Viruses lack the enzymes necessary for the generation of energy. 2. Viruses can not be cultured in any synthetic medium. 3. Viruses are transmitted from one organism to another by biological vectors only. Select the correct answer using the codes given below.
Which of the following statements is/are incorrect? 1. Viruses lack the enzymes necessary for the generation of energy. 2. Viruses can be cultured in any synthetic medium. 3. Viruses are transmitted from one organism to another by biological vectors only. Select the correct answer using the codes given below.
Which of the following statements is/are correct? 1. Viruses lack enzymes necessary for the generation of energy. 2. Viruses can be cultured in any synthetic medium. 3. Viruses are transmitted from one organism to another by biological vectors only. Select the correct answer using the codes given below. 
While doing experiment on Covid virus culture, it was found that the number of viruses in that culture doubles every hour. If there were 40 viruses present in the culture originally, how many viruses will be present at the end of 3rd hour, 5th hour and nth hour?
Consider the following statements regarding tobacco mosaic viruses and choose the correct answer:
1. Tobacco mosaic viruses are sap transmissible
2. These can stand a high degree of dilution
3. Breaking of a hair with contaminated instrument serves as a means of transmitting the virus
4. These viruses are insect borne