Biology unit

2. Glands secrete hormones that regulate processes such as growth, reproduction, and nutrient use by body cell
3. Organisms that survive and live, reproduce and pass on their genes to the next generation.
4. a physical feature of an organism's body having a specific function that contributes to the survival of the organism
10. An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur.
11. Allows manipulation of the environment, locomotion, and facial expression. Maintains posture, and produces heat.
13. Threadlike structures made of DNA molecules that contain the genes.
16. A jellylike fluid inside the cell in which the organelles are suspended
18. A reproductive process that involves two parents that combine their genetic material to produce a new organism, which differs from both parents
19. An organelle where photosynthesis occurs, found in plant cells.

1. skin hair nails
5. The cells and tissues that recognize and attack foreign substances in the body
6. Process by which a single parent reproduces by itself
7. the network of nerve cells and fibers that transmits nerve impulses between parts of the body.
8. body system the breaks down food and absorbs nutrients
9. Cell organelle that stores materials such as water, salts, proteins, and carbohydrates
12. A rigid layer of nonliving material that surrounds the cells of plants and some other organisms.
13. A cell structure that controls which substances can enter or leave the cell.
14. the human practice of breeding animals or plants that have certain desired traits
15. an inherited behavior that helps an organism survive, can be learned or be instinct.
17. organisms that make their own food