NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

VIRUSES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of these describes a difference between cells and viruses?
A
Cells contain protein, and viruses contain only carbohydrates.
B
Viruses have flagella, and cells have only cilia.
C
Cells reproduce independently, and viruses require a host to reproduce.
D
Viruses have membranes made of proteins, and cells have membranes made of nucleic acid.
Explanation: 

Detailed explanation-1: -Viruses have flagella, and cells only have cilia. Cells reproduce independently, viruses require a host to reproduce.

Detailed explanation-2: -Cells are the basic units of life. Cells can exist by themselves, like bacteria, or as part of a larger organism, like our cells. Viruses are non-living infectious particles, much smaller than a cell, and need a living host to reproduce.

Detailed explanation-3: -Viruses reproduce by DNA translation, whereas cells reproduce by DNA transcription.

Detailed explanation-4: -Viruses cannot replicate on their own, but rather depend on their host cell’s protein synthesis pathways to reproduce. This typically occurs by the virus inserting its genetic material in host cells, co-opting the proteins to create viral replicates, until the cell bursts from the high volume of new viral particles.

Detailed explanation-5: -However, a crucial point is that viruses are not capable of independent replication. They have to replicate within a host cell and they use or usurp the host cell machinery for this.

There is 1 question to complete.