Viruses Crossword

4. a widespread occurrence of an infectious disease over a whole country or the world at a particular time
6. glycoprotein projections found on the surface of some viruses
7. Proteins on the viral surface that help with cell entry
10. Ribonucleic Acid
11. Deoxyribonucleic Acid)
13. Any change in the DNA sequence of a cell
15. a powerful, involuntary reflex to clear irritants like dust, pollen, or germs from your nasal passages, triggered by the trigeminal nerve sending signals to your brainstem
16. the fundamental structural, functional, and biological unit of all living organisms
17. a vital, rapid, involuntary reflex clearing the airways
19. a laboratory instrument that uses lenses or electron beams to magnify objects too small for the naked eye
20. tiny infectious agent made of genetic material (DNA or RNA) inside a protective protein shell

1. a widespread occurrence of an infectious disease in a community at a particular time
2. a subjective, internal experience of an abnormal condition that only the patient can perceive and report
3. tiny organisms (living things) that have only one cell
5. the body's ability to resist disease-causing germs (pathogens) through its immune system
8. the protein shell of a virus, enclosing its genetic material
9. a temporary rise in body temperature
12. an infectious disease that spreads easily from person to person through direct contact (touch, fluids), indirect contact, or droplets
14. a substance used to stimulate immunity to a particular infectious disease or pathogen
18. an organism that provides shelter, food, or other resources for another organism