Across
- 2. the growth of plants with respect to gravity; roots arepositive because they grow down and stems are negative because they grow up againstgravity.
- 4. the body system involved in breathing and gas exchange andincludes the nasal passages, the pharynx, the larynx, the epiglottis, the trachea, bronchi,the lungs, and the diaphragm.
- 5. the body’s largest organ that consists of skin, hair, and nails.
- 6. body system that functions as a communication system and includes the pituitary gland, the thyroid gland, the parathyroid gland, the thymus gland,the pineal gland, the pancreas, the adrenal glands, the ovaries, and the testes.
- 8. A substance present at the start of a chemical reaction and altered during the reaction. What is put together to make something new.
- 14. An environmental factor that can cause a mutation that results in cancer.
- 16. The part of the cell cycle that divides the nucleus into two new identical nuclei occurs just before the cell divides. The newdaughter cells (the two new cells) are identical to the parent cell (the original cell); these are somatic (or body) cells.
- 17. one of a pair of cells that function in the opening and closing of a plant’sstomata by changes in their shape.
- 20. plant structure that develops into a seed when fertilized.
- 22. Either of the two cells made during mitosis and cytokinesis.They are genetically identical to the parent cell.
- 26. Movement
- 27. the body system that removes waste and excess water from thebody, including the lungs, skin, kidneys, and urinary bladder.
- 29. the end result of a biological or chemical process, what was made or created.
- 31. organism’s reaction to a stimulus (a change in an organism’s environment)
- 34. A molecule that can be bonded to another identical molecule, the smallest part of a biomolecule.
- 35. the body system involved in producing offspring
- 38. Fat tissues that help keep an organism warm
- 39. A cell that has only one set of chromosomes. These are gametes (egg or sperm cells)
- 40. Uses the energy from the sun to synthesize organic compounds from inorganic compounds
- 41. body system that works to protect the body from infection anddisease and includes the skin, mucus, and white blood cells.
Down
- 1. Cells change from immature, unspecialized cells into specialized cells based on where in the body they are.
- 3. A tumor or growth that is not cancerous.
- 7. Substances or radiation that can increase the risk of mutations.
- 9. the photosynthetic cells found in the leaves of plants.
- 10. the growth movement of a plant in response to light
- 11. Make a reaction start faster
- 12. Proteins that act as a catalyst to accelerate a reaction. They are NOT permanently changed in the process, so they are reusable. The work with specific substrates. Their name ends in -ASE
- 13. The cell divides into two daughter cells after the nucleus has split into nuclei.
- 15. occurs within or between cells that regulate cell function.
- 18. Destruction of an enzyme by temperature or other factors.
- 19. The plural of nucleus
- 21. The membrane that surrounds the nucleus of eukaryotic cells.
- 23. A place in the cell cycle where the process can be halted until favorable conditions exist. Checkpoints also ensure the cell is ready to proceed to the next stage.
- 24. When a cell is damaged beyond repair, it destroys itself (pop!).This is a programmed cell death.
- 25. the body system that controls and coordinates all bodily functionsand includes nerve cells (neurons), the brain, and the spinal cord.
- 28. The substance an enzyme acts on. They may be broken apart or put together. The reactant
- 30. Mitosis - the nucleus divides before the cell divides, so the new cells will have a complete set of genetic material.
- 32. Attach to the sister chromatids at the centromere. Pull the chromatids to opposite ends of the cell.
- 33. The old word for Mitosis. It comes from the Germanic Kernel,which means nucleus.
- 36. A large molecule made up of joined monomers.
- 37. Cell with two complete sets of chromosomes, one set from each parent. These are somatic cells (body cells)