Viral structure

Question 1

Why are viruses not considered prokaryotes or eukaryotes

Answer 1

they lack any of the characteristics of living things, except
the ability to replicate which they accomplish only in other living cells

Question 2

What is the structure of the virus? (2)

Answer 2

1-Nucleic acid ( RNA or DNA)

2-The capside is a protein coat that functions as a shell to protect the viral DNA/RNA. during the infection attaches the virus to receptors on the host cell

Question 3

What are the features of a virus? (4)

Answer 3

they are not cells

cannot live independently

infect host cells and replicate their DNA

take over a cells translation and transcription

Question 4

What are the steps to the replication cycle(6)

Answer 4

1. Attachment
2. Penetration
3. Uncoating
4. Replication
5. Assembly
6. Release

Question 5

How does an virus infect an animal cell?(3)

what is the process called?

Answer 5

Surface attachment proteins bind to specific
cell receptors

Fuse with plasma membrane

Invaginates plasma membrane to form a
vesicle inside the cell

endocytosis

Question 6

MAHRAN OPEN POWERPOINT LOOK AT DIAGRAMS

Answer 6

MAHRAN OPEN POWERPOINT LOOK AT DIAGRAMS