biology

3. Structures responsible for protein synthesis; they make the rough endoplasmic reticulum "rough".
5. The molecule that carries the genetic instructions for an organism.
6. A feature that helps an organism survive and reproduce in its specific environment.
7. A specialized cell transmitting nerve impulses; a nerve cell.
12. The passive movement of particles from an area of high concentration to an area of low concentration.
13. The process of waste removal from an organism.
15. The basic structural and functional unit of all known living organisms.
18. The process of taking food into the body.
19. The cell organelle responsible for energy production (the cell's "powerhouse").
21. An organism's ability to maintain a stable internal condition despite a changing environment.
22. A plant organelle that stores water, waste, and other materials.
23. The organelle that contains the genetic information in a eukaryotic cell.
24. An organism that can make its own food using energy from the sun.

1. A type of single-celled prokaryotic microorganism.
2. The process plants use to convert sunlight, carbon dioxide, and water into glucose/sugar.
4. The movement of water from an area of high water concentration to low water concentration across a membrane.
8. The process of gas exchange, taking in oxygen and releasing carbon dioxide.
9. A term for a single-celled organism.
10. The scientific study of heredity and the variation of inherited characteristics.
11. Related to the lungs (e.g., in the circulatory system).
14. The plant organelle responsible for photosynthesis.
16. The organ responsible for pumping blood throughout the body.
17. Proteins that act as biological catalysts to speed up chemical reactions.
19. The sum of all chemical reactions that occur within an organism.
20. The process of cell division that results in two identical daughter cells.