biology

2. The nuclear membrane breaks down, chromosomes are clearly visible, and the spindle begins to form.
3. organelle where amino acids are bonded together to form proteins
5. This is not technically a stage of mitosis because mitosis is the division of a cell's nucleus. This stage is the division of the cell's cytoplasm.
8. process by which a section of DNA is used to produce a single-stranded RNA molecule
10. Chromosomes are lined up in the center of the cell.
11. another name of a protein.
12. In both plant and animal cells; controls cellular functions: the brain
13. when part of a gene in a chromosome is lost.
14. Where photosynthesis occurs; in plant cells only
15. During this stage the cell grows and functions. In addition, the cell's DNA duplicates and the nucleus is clearly visible.
17. Synthesizes (makes) protein

1. The pairs of chromatids that make up the chromosomes separate from each other and are pulled to two opposite ends of the cell.
4. environmental factors (physical or chemical) ex. radiation, viruses like HPV, enviro. poisons like tobacco, etc.
5. Gives support and protection to cell; only in plant cells
6. enzyme that unzips DNA
7. building blocks of proteins
8. the process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm.
9. Nuclear membranes form around both sets of chromosomes and the chromosomes uncoil. The cytoplasm starts separating (cytokinesis).
12. a building block of nucleic acid.
16. allows you to match up and place in right place, its a special triplet of bases at one end of a folded molecule.