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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
Which of the following example is correct about the diffusion? Example 1: The smell of food being cooked reaches us even from a considerable distance.  Example 2: The fragrance of the burning incense sticks spreads all around due to the diffusion of its smoke into the air. Example 3: The smell of perfume spreads due to the diffusion of perfume vapors into the air.
Choose the option that correctly sequences the following sentences. 1. The baby tortoise once again limps his way up the tree and prepares to attempt another flight. 2. A baby tortoise climbs to the top branch of a tree and walks to the end of the branch. 3. As he tries to ‘fly’, he spreads his legs, waves them as hard as he can, but hits the ground very hard. 4. He spreads all his four flippers like a bird and jumps off the branch. 5. One of the two birds, who were watching his futile attempts to fly, turns to the other and says: “It's about time we told our baby tortoise that we adopted him.” 
Which of the following hepatitis viruses spreads by fecal-oral route?
Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the right order to form a meaningful and coherent paragraph.   A. These kinds of sharks are known as obligate ram ventilators because they draw water in through their mouths and force it out through their gills. B. They use a method called buccal pumping, in which water is pulled in through the mouth and forced out through the gills by the cheek muscles. C. It is true that many types of sharks must keep moving in order to receive life-giving oxygen from the water passing through their gills. D. Other types of sharks are able to remain stationary because they possess special structures called spiracles, which force water out through their gills.
Read the paragraph and answer the question Viruses are living organisms.We may consider them regular chemical molecule since they have normal atomic structure, but on the other hand, we must also consider them as being alive since they are able to multiply unlimited quantities Viruses are alive because they