Science cross word puzzle

3. it is a condition in which a person has an extra chromosome
5. a network of nerves that relaxes your body after periods of strees or danger
6. any living biological entity
10. it regulate involuntary physiological processes
12. an amino acid that is used in the biosynthesis of proteins
13. it is the main constituent of chromosomes
14. portion of the brain in the back of the head between the cerebrum and the brain stem
16. an amino acid or a building block for proteins
19. it function based on sensory input,integration and motor output
20. the most complex part of human body
21. it is the structure that connects the cerebrum of the brain to the epinal cord and the cerebellum
22. it is the largest part of brain
26. a network of nerves that helps your body active its "fight of flight"respones
28. small pocket of space between two cells
30. it can be used by skeletal muscle to give energy during exercise

1. it is a nerve cell that are activated by sensosy input from the
2. it is a type of genitic change that involves the absume of a segment of dna
4. it is a column of nerve tissue that runs from the base of the skull
7. it is a complex circuits throughout the body that allows both voluntary and involuntary movements
8. this is a single stranded molecule of RNA
9. it is the firts codon of a messenger RNA transcript translated by a ribosome
11. this is made up of brain and spinal cord
15. it is where a neurons receives imput from other cells
17. the central part of neurons that includes the nucleus
18. a nucleic acid present of chromosome
23. a network of nerves that runs throughout the head,neck and body
24. it is the cable that several times thinner than a human hair
25. an organ or cell that able to respond to light,heat or other external stimulus
27. it is a chemical substance that nuetralizes alkalis dissolves some metals
29. a subdivision of your peripheral nervous system, which is all of your nervous system except your brain and spinal cord