Read the passage and answer the question that follow.
Some virus experts might not consider viruses to be alive. Yet viruses can reproduce. To do so, they hijack the cells of a host. They borrow the "machinery" in the host's cells to copy the virus' genetic code. Those host cells may spit out hundreds or thousands - even millions - of copies of the original virus. These new viruses then go on to infect more cells. Maybe the host will also sneeze out the viruses or otherwise release some to infect other potential hosts. And those hosts might be anything from people or plants to bacteria. But each time a virus is copied, there's some risk the host's cell will make one or more errors in the genetic code of that virus. These are known as mutations. Each new one alters the genetic blueprint of the virus a bit. Mutant viruses are known as variants of the original. Many mutations won't affect how a virus works. Some might be bad for the virus. Others might improve how well the virus can infect a cell, or help the virus evade its host's immune system. A mutation might even allow the virus to resist the effects of some therapy. Scientists refer to such new-and-improved variants as strains. And although coronavirus variants made news throughout much of the COVID-19 pandemic, any virus runs the risk of spawning new variants through mutation. Indeed, mutations are one basis of evolution. Mutationsthat don't benefit an organism (or virus), often die out. But those that make an organism more fit - better adapted to its environment - tend to become more dominant. Scientists refer to some new versions of the coronavirus as "variants of concern". Compared to the original virus, these variants might infect or spread between people more easily, respond less well to treatments or impair how well vaccines work against the virus. A more serious class of viruses are so-called "variants of high consequence". Treatments or precautions work far less well against these viruses than they had against earlier forms of the virus. For instance, the new variants might resist current vaccines. They may not show up well in current tests. They might even ause more severe disease.
Choose the option with correct spelling: A PronunciationB Pronounciation C PronuncishionD Prununciation
Choose the correct one word substitution for the given phrases:A person who has a long experience in a particular area or activity- AEmployer BImposter CVeteran DCynic
Choose the correct option to complete each sentence: Either Lata or I ________ wrong. Aare Bam Cwill Dwere
Choose the most appropriate passive form for the given sentences from the options : The cat caught the mouse. A The mouse caught the cat. B The mouse catches by the cat. C The mouse is catching the cat. D The mouse was caught by the cat.
Fill in the blanks with the correct form of verbs: They ______ for the exams every day. A preparing B prepare C are prepared D prepares
Mark the option with the correct spelling : A Assacinate B Assassinate C Assasinate D Asasinate
Choose the correct synonym of the given word: Basic A Bare B Main C Mere D Extra
Choose the correct word/phrase to complete each sentence. My little brother was so scared when he saw the cat last night, he _____ with fear. Awere to shake Bwas shaking Cwas shook Dwill be shaking
Choose the correctly punctuated sentence: . shell come on saturday and sunday every week A she ll come on Saturday and Sunday; every week. B Shell come on Saturday and Sunday every week. C She’ll come on Saturday and Sunday, every week. D Shell’ come on Saturday and Sunday; every week.