Viruses

What do viruses consist of?

• Only proteins

• A short strand of nucleic acid surrounded by a protein coat

• Only DNA

• Only RNA

The genetic material in viruses can be ______ or ______.

• RNA; DNA

• Protein; Lipid

• Carbohydrate; Protein

• Lipid; Carbohydrate

True or False: Viruses are able to reproduce without the use of a host.

• True

• False

Viruses come in a variety of shapes and sizes but are NOT cellular (do not have cells & don’t carry out life processes). Which of the following is NOT a characteristic of viruses?

• They have cells

• They do not carry out life processes

• They come in different shapes

• They are not cellular

Refer to the diagram of the T4 Bacteriophage. Which of the following is NOT a part of the T4 Bacteriophage structure?

• Head (with protein coat)

• DNA

• Tail fibre

• Surface proteins

What is the protein coat of a virus called?

• Capsid

• Enzyme

• Genome

• Envelope

The capsid of a virus allows it to enter specific host cell(s).

• True

• False

What is the main topic of the slide?

• Photosynthesis

• Viral Replication

• Cellular Respiration

• Protein Synthesis

What is the first step in the lytic cycle of virus reproduction?

• Attachment

• Replication

• Assembly

• Release

Which of the following is NOT a step in the lytic cycle?

• A) Attachment

• B) Penetration

• C) Photosynthesis

• D) Assembly