Biology Crossword

4. supply raw materials for growth and repair of structures such as skin and muscle.
12. down food; absorbs nutrients.
14. helps protect the body from disease
16. is the process in which a stimulus produces a response that opposes the original stimulus.
19. are substances in food that supply the energy and raw materials that your body uses for growth, repair and maintenance.
20. is the physical breakdown of large pieces of food into smaller pieces.
21. the relatively constant internal physical and chemical conditions that organisms maintain despite changes in internal and external changes.
22. Works with skeletal system to produce voluntary movement.
23. organic molecules that the body needs in very small amounts.
24. the most important nutrient.
25. Inorganic nutrients that the body needs.

1. Agroup of different types of tissies that work together to perform a single function or several realted functions.
2. is the amount of heat needed to raise the temperatura of 1 gram of water by 1 degree Celsius.
3. Nerve impulses are transmitted throughout the body.
5. Recognizes and coordinates the body`s response to changes in its internal and external environments.
6. brings in oxygen needed for celular respiration and removes excess carbon dioxide from the body.
7. Is a group of organs that perform closely related functions.
8. Movements of the body are posible because of…
9. are a major source of energy for the body.
10. enzymes break down food into small molecules.
11. Supports the body; protects internal organs.
13. Guards against infection and injury and ultraviolet radiation from the sun.
15. transports oxygen, nutrients and hormones to cells.
17. the tissue that lines the interior and the exterior body surface.
18. A type of tissue that provides support for the body and connects its parts.