B.4(C) Lesson Viruses

Cells vs Viruses

Cells

Viruses

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The lytic cycle is when the virus injects its DNA and replicates inside the cell, creating thousands of more viruses , causing the cell to burst and release these viruses into the organism . This cycle is quick to show symptoms within days.

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Lytic Cycle

Multiple Choice

When a virus attaches to a host, what does it inject into the host?

• Protein coat

• DNA/genetic material

• Capsid

• Envelope

Multiple Choice

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

Multiple Choice

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

• lipids

• carbohydrates

• protein

• carbon

Multiple Choice

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

• they cannot reproduce without the aid of a host

• they do not metabolize food into energy

• they do not have organized cells

• all of the above

• none of the above

Multiple Choice

Which viral life cycle is shown?

• Lysogenic Cycle

• Lytic Cycle

• Binary Fission

• Conjugation