Viruses: Structure, Replication, and Impact
This worksheet covers the basic structure, replication cycles, and impact of viruses on living organisms, suitable for Grade 11 Biology students.
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Viruses: Structure, Replication, and Impact
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Read each question carefully and answer to the best of your ability. Use complete sentences for short answer questions.
1. Which of the following is NOT a characteristic of viruses?
They contain genetic material (DNA or RNA).
They have a protein coat called a capsid.
They are capable of independent metabolism.
They replicate inside host cells.
2. What is the primary function of the capsid in a virus?
To provide energy for replication.
To protect the genetic material.
To facilitate movement.
To synthesize proteins.
3. Viruses are obligate parasites, meaning they cannot replicate without a host cell.
4. The two main types of viral replication cycles are the cycle and the cycle.
5. Describe the basic structure of a bacteriophage, as shown in the diagram.
6. All viruses contain both DNA and RNA as their genetic material.
True
False
7. Vaccines work by introducing weakened or inactivated viruses (or parts of them) to stimulate an immune response.
True
False
8. Compare and contrast the lytic and lysogenic cycles of bacteriophage replication. Include at least two similarities and two differences.
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