Cells

3. a virus that attacks the immune system, specifically the white blood cells
7. flexible selectively permeable boundary that helps control what enters and exits the cell
9. an oraganism that is infected with or fed up on by a parasite or pathogenic organism
10. body system that consist of of organs and substances that includes the skin, mucas and white blood cells
13. unicellular organism with membrane-bound nucleus and organelles.
14. the semipermeable membrane that surrounds the cytoplast.
16. an organism that causes disease in a host
17. A highly contagious upper respiratory disease caused by the SARS-COU-2 virus.
18. A highly contagious disease caused by the varicella-zoster virus
20. regulation of an organisms internal environment to maintain conditions needed to live

1. a preparation that is used to stimulate the body's immune response against a specific disease
2. plasma membrane layers copsed of phospholipid molecules arranged with polar heads facing the outside and non-polar tails facing the inside
4. microscopic unicellular organisms without a nucleus or another membrane-bound organelle
5. specialized structure that carries out a specific cell function in different parts of the cell at the same time
6. a cell that is part of the immune system and helps the body fight infections
8. Susbstance that is able to kill or inhibit the growth of bacteria.
11. a contagious respiratory illness caused influenza viruses that=at the nose, throat and sometime lungs
12. A virus that infects a bacteria and reproduces inside it.
15. RNA virus, such as HIV, with reverse transcriptase in its core
19. the central membrane bound organelles