Viruses and prions are smaller and less complex than bacteria; they ...

Section 2: Viruses and Prions

Viruses and prions are smaller and less complex than bacteria; they invade cells and can alter cellular functions.

K What I Know

W What I Want to Find Out

L What I Learned

Essential Questions

? What is the general structure of a virus? ? What are similarities and differences in the lytic cycle, the lysogenic cycle,

and retroviral replication? ? What is the relationship between a prion's structure, replication, and action

and its ability to cause disease?

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Viruses and Prions

Vocabulary

Review

? protein

New

? virus ? capsid ? lytic cycle ? lysogenic cycle ? retrovirus ? prion

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Viruses and Prions

Viruses

? A virus is a nonliving strand of genetic material within a protein coat. ? Scientist do not consider viruses alive because:

? No organelles to take in nutrients or use energy ? Cannot make proteins ? Cannot move ? Cannot replicate on their own

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Viruses and Prions

Human Viral Diseases

Interactive Table

FPO

Add link to interactive table from page 525 (table 2) here.

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Viruses and Prions

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