SSC
BIOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Which of the following statements about viruses is true?
|
|
They contain ribosomes
|
|
|
They do not contain genetic material
|
|
|
They need a host cell to reproduce
|
|
|
They have a cell membrane
|
Explanation:
Detailed explanation-1: -All viruses are obligate parasites; that is, they lack metabolic machinery of their own to generate energy or to synthesize proteins, so they depend on host cells to carry out these vital functions. If an obligate parasite cannot obtain a host it will fail to reproduce.
Detailed explanation-2: -A virus needs a living cell in order to reproduce. The living cell in which the virus reproduces is called a host cell.
Detailed explanation-3: -Final answer: The incorrect statement is that the infective constituent in viruses is the protein coat. Q. What are viruses, viroids and prions?
There is 1 question to complete.