Across
- 3. One of a pair of female glands in which the eggs form and the female hormones estrogen and progesterone are made.
- 6. this is the molecule that carries genetic information for the development and functioning of an organism.
- 7. a disorder characterised by shorter than normal skeletal growth.
- 9. this a type of mutation that involves the addition of one or more nucleotides into a segment of DNA.
- 12. They use electrical and chemical signals to send information between diļ¬erent areas of the brain, as well as between the brain, the spinal cord, and the entire body.
- 13. a linear molecule composed of four types of smaller molecules called ribonucleotide bases: adenine (A), cytosine (C), guanine (G), and uracil (U).
- 14. a type of mutation in which one nucleotide is replaced by a different nucleotide.
- 17. body the central part of a neuron that includes the nucleus but not the axons and dendrites
- 18. a change in the DNA sequence of an organism.
- 19. a pea-sized conical mass of tissue behind the third ventricle of the brain, secreting a hormone-like substance in some mammals.
- 22. irregular growth of the thyroid gland
- 23. system a complex network of glands and organs.
- 24. this is a type of chromosomal abnormality in which a chromosome breaks and a portion of it reattaches to a different chromosome.
- 26. The places where neurons connect and communicate with each other.
- 27. one of the four nucleotide bases in RNA, with the other three being adenine (A), cytosine (C) and guanine (G).
- 29. the mutation of the chromosomal segments of the DNA strands.
- 30. the receiving part of the neuron.
Down
- 1. the basic physical and functional unit of heredity.l
- 2. neuron cells in the brain and spinal cord that allow us to move, speak, swallow and breathe by sending commands from the brain to the muscles that carry out these functions.
- 4. something that provokes or causes an action or response.
- 5. occur when a section of DNA breaks away from a chromosome during the reproductive process and then reattaches to the chromosome in reversed order.
- 8. where electrical impulses from the neuron travel away to be received by other neurons.
- 10. system The central nervous system is made up of the brain and spinal cord. The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.
- 11. hormone created by your pancreas that controls the amount of glucose in your bloodstream at any given moment.
- 15. located inside your abdomen, just behind your stomach.
- 16. gland It regulates growth, metabolism, and reproduction through the hormones that it produces.
- 20. gland A small gland that makes steroid hormones, adrenaline, and noradrenaline.
- 21. neuron nerve cells that are activated by sensory input from the environment
- 25. the central nodes of neural circuits, enabling communication between sensory or motor neurons and the central nervous system (CN
- 28. An organ that is part of the lymphatic system, in which T lymphocytes grow and multiply.