EVERYDAY SCIENCE

SCIENCE

VIRUS AND BACTERIA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Lysis is ____
A
when the cell hosting a virus bursts.
B
when a virus injects a host cell with its DNA.
C
when the viral DNA is inactive.
D
None of the above
Explanation: 

Detailed explanation-1: -The new viruses burst out of the host cell during a process called lysis, which kills the host cell. Some viruses take a portion of the host’s membrane during the lysis process to form an envelope around the capsid. Following viral replication, the new viruses may go on to infect new hosts.

Detailed explanation-2: -In biology, lysis refers to the breakdown of a cell caused by damage to its plasma (outer) membrane. It can be caused by chemical or physical means (for example, strong detergents or high-energy sound waves) or by infection with a strain virus that can lyse cells.

Detailed explanation-3: -Cell lysis is a common consequence of viral infection. It consists of a disruption of cell membranes leading to cell death and release of cytoplasmic compounds into the extracellular space. Lysis is actively induced by many viruses to release viral particles previously assembled into the host cell.

Detailed explanation-4: -Viruses can be released from the host cell by lysis, a process that kills the cell by bursting its membrane and cell wall if present. This is a feature of many bacterial and some animal viruses.

Detailed explanation-5: -The phage that causes lysis of the host is called a lytic or virulent phage.

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