Viruses

Name 3 reasons why viruses may be considered alive

1. Have genetic material

2. Can replicate but need host

3. Have a protein coat

Name 3 reasons why viruses may not be considered alive

1. Non cellular

2. Cannot replicate by themselves

3. No cell organelles

Label This Diagram

Structure of the Virus

x - capsid

y - nucleic acid / DNA

What is the capsid made of?

Proteins

How are viruses indetified?

By their shape

Name the types of virus shapes

Round

Rod

Complex

Define Obligate Parasite

Can only replicate within another living cell

Name the steps of Virus replication

Attachment

Entry

Synthesis

Assembly

Release

Explain this step of Virus Replication

Attachment

Virus attaches to host through receptor cells

Explain this step of Virus Replication

Entry

Virus injects nucleic acid

Explain this step of Virus Replication

Synthesis

1. Host DNA is made inactive

2. New nucleic acid and proteins are produced

Explain this step of Virus Replication

Assembly

New viruses are made inside the infected cell

Explain this step of Virus Replication

Release

Lysis releases thousands of viruses

Define Lysis

Bursting of cell

Name a harmful medical effect of Viruses

Covid 19

Name a harmful economic effect of Viruses

Tomato mosaic virus

Name a beneficial medical effect of Viruses

Vaccine production

Name a beneficial economic effect of Viruses

Vaccine production