blood Flashcards
1
Q
What are viruses?
A
- smaller than bacteria
- no cell wall
- have a protein coat
2
Q
What are protoctists?
A
• single celled
3
Q
What are bacteria?
A
- single celled
* cell wall, membrane, cytoplasm and plasmids, but no nucleus. Instead circular chromosomes of RNA
4
Q
give two groups of pathogens?
A
bacteria and virus