Viruses Audio SAQs .docx

Viruses Audio SAQs - Why are viruses hard to classify as living things? 1. They are non-cellular/ they are obligate parasites/ they have no metabolism/ they only have one type of nucleic acid (DNA or RNA).  - What is an antigen?  1. An antigen is a foreign substance that stimulates th...

Viruses Audio SAQs - Why are viruses hard to classify as living things? 1. They are non-cellular/ they are obligate parasites/ they have no metabolism/ they only have one type of nucleic acid (DNA or RNA).  - What is an antigen?  1. An antigen is a foreign substance that stimulates the production of an antibody.  - Name the stages in viral replication 1. 1.**Attachment** **2. Entry** **3. Synthesis** **4. Assembly** **5. Release** - Name a human disease caused by viruses 1. measles/ mumps/ common cold/ flu/ cold sores/ AIDS  - Name an animal disease caused by viruses  1. Foot and mouth/ rabies  - Name a plant disease caused by viruses  1. Tobacco mosaic virus  - What is a benefit of viruses?  1. Viruses can be used in genetic engineering/used to make vaccines/ used to kill antibiotic resistant bacteria.