SCIENCE
VIRUS AND BACTERIA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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cannot attach to a host
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becomes part of the host cells genetic material
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immediately takes over the cell
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attaches to the host, but does not enter
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Detailed explanation-1: -This process of host cell takeover is known as “molecular hijacking.” When a virus replicates it has to build entire viral particles and it has to not only make the proteins that comprise the viral capsid (and enclose it with an envelope), but it must also replicate its genetic material.
Detailed explanation-2: -Instead, they “hide” for a while. After a hidden virus enters a host cell, its genetic material becomes part of the cell’s genetic material. The virus does not appear to affect the cell’s functions and may stay in this inactive state for years.
Detailed explanation-3: -The virus’s genome is uncoated from the protein and injected into the host cell. Then the viral genome hijacks the host cell’s machinery, forcing it to replicate the viral genome and produce viral proteins to make new capsids.
Detailed explanation-4: -Lysogeny. A phase where bacteriophage or archaeal viruses integrate into their host genome and are propagated along with the host genome as the cell divides.
Detailed explanation-5: -Each virus consists of a nucleocapsid (protein coat) that surrounds a core of RNA (ribonucleic acid) genetic material. Surrounding the nucleocapsid is a lipid envelope that contains the glycoprotein spikes haemagglutinin (H) and neuraminidase (N).