virus structure

Question 1

two types of viruses

Answer 1

RNA ( retroviruses) or DNA (ssDNA and asDNA)

Question 2

basic structure of a virus

Answer 2

protein code with a nucleic acid DNA or RNA

Question 3

bacteria vs virus

Answer 3

bacteria - 10um, genetic material is circular DNA, reproduce by binary fission
virus - 400nm, genetic material is linear DNA or RNA, reproduce by inserting nucleic acid into host cells

Question 4

virus’s life cycle

Answer 4

1. virus binds to host surface membrane glycoproteins
2. nucleic acid DNA or RNA is inserted into host cell
3. viruses use the host cell to synthesise viral nucleic acid and proteins
4. viral proteins assembled into a capsid
5. viruses are assembled in the host cell
6. virus particles released by cell lysis