Biology Viruses

Front

A virus consists of:
- RNA or DNA and a cell membrane
- RNA or DNA and a protein coat
- RNA and DNA and a protein coat
- proteins, cell membrane, and RNA

Back

RNA or DNA and a protein coat

Front

What happens after the virus has been taken up by the cell?

Back

it inserts into the host DNA

Front

What is the outside protective coating of a virus made of?

Back

protein

Front

What reason do scientists give for saying that viruses are not living organisms?

Back

All of the above: they cannot reproduce without the aid of a host, they do not metabolize food into energy, they do not have organized cells.

Front

True or False: Most viruses are so small that they can't be seen with the unaided eye.

Back

True

Front

What happens in the lytic cycle?

Back

The spacecraft virus attaches to the host cell, injects DNA, and as the virus leaves, it kills the host cell.

Front

What happens in the lysogenic cycle?

Back

A virus injects its genetic material into a host cell

Front

Why do viruses need a host cell?

Back

because they need to reproduce

Front

What does the lytic cycle result in?

Back

destruction of the infected cell and the membrane

Front

What is the outside, protein coat on a virus called?

Back

capsid