Cells Crossword

2. A disease in which some body cells divide uncontrollably
6. A cell that carries information through the nervous system
7. A group of similar cells that perform the same function
9. A body tissue that covers the surfaces of the body, inside and out
13. The process in which a unicellular organism transfers some of its genetic material to another unicellular organism
14. A tiny, nonliving particle that invades and then reproduces inside a living cell
15. The basic unit of structure and function in a living thing

1. A cell in the blood that takes up oxygen in the lungs and delivers it to cells elsewhere in the body
3. A body tissue that contracts, making body parts move
4. A body tissue that provides support for the body and connects all of its body parts
5. The control center of a cell that directs the cell's activities
8. A blood cell that fights disease
10. A group of organs that work together to perform major functions in the body
11. Single-celled organisms that lack a nucleus
12. A structure in the body that is composed of different kinds of tissue