Materials: new catalyst sheet and worksheet Turn in biogeochemical cycles worksheet to the front tray. Catalyst (5 min): 1. During the carbon cycle, in what form are carbon atoms generaly returned to the atmosphere? Simple sugars Carbon Monoxide Methane Carbon Dioxide What process is it when water vapor changes into clouds? How do animals get their nitrogen?

Materials: None Get out Virus Transmission Lab Worksheet from yesterday. Catalyst (5 min): Brainstorm: Viruses are hard for human beings to treat. Why do you think this is? What do human beings use to treat viruses? Explain in 3-5 sentences.

Elite Eight Trait Check-Up Respect the Threshold Everyone on time? Silent for First Five? Be Prepared (2 min) Seated Have materials Working on catalyst

Class Motto If there is a problem, We look for a solution. If there is a better way, We find it. If we need help, We ask. If a teammate needs help, We give.

Announcements SWIM MEETING WEDNESDAY at 8am! Sign up outside my door if interested! Get 3 forms from me

Objectives I can create a hypothesis regarding the spread of a virus. I can draw conclusions regarding the origin of the virus and what leads to the spread of viral disease.

Objectives I can state the components of a virus. I can explain why a virus is considered nonliving. I can explain the differences between a virus and a bacteria. I can explain how a virus replicates.

Virus Video

Coat of proteins (called a Capsid) What is a virus? Coat of proteins (called a Capsid) Nucleic Acid Viruses are non-living infectious agents. Parts of a virus: 1. nucleic acid (DNA or RNA) 2. protein coat. Examples: influenza (the flu), the common cold, HIV, and the West Nile Virus

What is a virus? Viruses come in many shapes, some of which are coated in a membrane, while others have tails.

What is a virus? Viruses come in many shapes, some of which are coated in a membrane, while others have tails.

What is a virus? Bacteriophage: a virus that infects bacteria. Bacteria and viruses both make human beings ill, but are different in many ways.

Why aren’t viruses considered living things? Viruses are not living because: Not made of cells Do not grow or develop Do not use energy Cannot reproduce without a host

Close-up: How a virus uses host cells to reproduce LYTIC CYCLE

Close-up: How a virus uses host cells to reproduce Lysogenic Cycle

How do we treat viruses? Difficult to treat Try to prevent them with vaccines, which train our immune systems to fight viruses. Also rest and fluids

Why is it hard to treat viruses? They are constantly mutating. Once scientists develop a vaccine, it is no longer effective. Ex. Common Cold

Independent Practice: Venn Diagram Make a Venn Diagram comparing and contrasting Bacteria and Viruses. Use the following words: Self replicating, vaccine, cell wall, microscopic, protein coat, prokaryotic, does not grow, needs a host cell, antibiotics, harmful, DNA, strep throat grows, cells, influenza

Independent Practice: Venn Diagram self-replicating vaccine cell wall protein coat microscopic cells DNA Influenza prokaryotic killed by antibiotics harmful Do not grow and develop grow and develop Need host cell strep throat

PANTHER PASS What are the 2 parts of a virus? Are viruses living or nonliving? Give 2 reasons why. How do we treat viruses? How does evolution make it hard to treat viruses? Name one difference between a virus and a bacteria.