EVERYDAY SCIENCE

SCIENCE

VIRUS AND BACTERIA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a major difference in the lytic cycle and lysogenic cycles?
A
The viral DNA becomes part of the host cell DNA in the lysogenic cycle
B
The viral DNA breaks down in the lysogenic cycle.
C
There isn’t a difference between the two; someone just gave them two names like people like to do in science. Because science.
D
The lysogenic cycle changes a virus into a bacterium.
Explanation: 

Detailed explanation-1: -In the lytic cycle, the phage replicates and lyses the host cell. In the lysogenic cycle, phage DNA is incorporated into the host genome, where it is passed on to subsequent generations. Environmental stressors such as starvation or exposure to toxic chemicals may cause the prophage to excise and enter the lytic cycle.

Detailed explanation-2: -What is the main difference between a lytic and lysogenic cycle? In the lytic cycle, the viral genome does not incorporate into the host genome. In the lysogenic cycle, the viral genome incorporates into the host genome and stays there throughout replication until the lytic cycle is triggered.

Detailed explanation-3: -The lytic cycle leads to the death of the host, whereas the lysogenic cycle leads to integration of phage into the host genome. Bacteriophages inject DNA into the host cell, whereas animal viruses enter by endocytosis or membrane fusion. Animal viruses can undergo latency, similar to lysogeny for a bacteriophage.

Detailed explanation-4: -Plaque morphologies observed during the double agar overlay were used for differentiating the lytic and lysogenic phages because it is believed that lytic phages have a tendency to produce clear plaques and lysogenic phages produce turbid or bulls-eyed plaques [4, 5].

Detailed explanation-5: -During the lysogenic cycle, instead of killing the host, the phage genome integrates into the bacterial chromosome and becomes part of the host. The integrated phage genome is called a prophage.

There is 1 question to complete.