2. Viruses and Viral replication

Question 1

What are viruses

Answer 1

Nott living cells, just nucleic acids with a protein coat

Question 2

How do they reproduce

Answer 2

Invade and reproduce inside other cells known as host cells

Question 3

Do they have membrane, cytoplasm or ribosomes?

Answer 3

NO

Question 4

What do they have?

Answer 4

• Capsid(protein coat)
• DNA
• Attachment proteins
• Sheath

Question 5

How do we remember Viral replication?

Answer 5

A- Attachment
E- Entry
S- Synthesis
A- Assembly
R- Release

Question 6

What happens in the first phase (A)

Answer 6

Attachment - Virus attaches to host cell receptor proteins

Question 7

What happens in the second phase (E)

Answer 7

Entry - Genetic material is released into the host cell with capsid left behind

Question 8

What happens in the third phase (S)

Answer 8

Synthesis - Genetic material and proteins are replicated by host cell receptor

Question 9

What happens in the fourth phase (A)

Answer 9

Assembly - Viral components are assemble

Question 10

What happens in the fifth phase (R)

Answer 10

Release - Replicated viruses released from host cells - often results in cell death

Question 11

What does it look like?

Answer 11

Question 12

What happens in the fifth phase (R)

Answer 12

Release - Replicated viruses released from host cells - often results in cell death