Virus- Topic 2.2

Question 1

Explain why viruses may be described as intracellular parasites?

Answer 1

Viruses cannot replicate on their own and their replication is dependent on the host’s cell that they invade.
They don’t metabolise their own energy and therefore obtain enwrgy from the host cell.

Question 2

Decsribe the structure of the Ebola Virus

Answer 2

Tubular virus with glycoproteins found on the membrane.

Question 3

State the structure found in all viruses

Answer 3

Nucleic acid core and Capsid

Question 4

Describe the structure of a bacteriophage

Answer 4

It had a head that contains double stranded DNA in a nucleic acid core, surrounded by a Capsid and a Tail.

Question 5

HIV is a retrovirus. What does this mean

Answer 5

It is a Virus that contain RNA and uses reverse transcriptase to produce DNA. That is then integrated into the host genome to reproduce new viral proteins.