Across
- 2. is a chemical reaction that takes in energy from the surroundings
- 6. generate most of the chemical energy needed to activate the cell's biochemical reactions
- 8. the __________ speed up chemical reactions in the body, but are not depleted in the process, so they can be used over and over again
- 9. A single-celled microscopic organism that multiplies by cell division or by spores.
- 12. is a process where a single cell divides into two identical daughter cells (cell division).
- 14. is a characteristic shared by two or more taxonomic groups, inherited from their common ancestor's
- 15. is any unicellular or multicellular organism that belongs to the Protoctist kingdom (not animals), which includes protozoa, algae, and silty molds.
Down
- 1. it is a molecule that contains our unique genetic code. which is present in almost all living organisms as the main component of chromosomes.
- 3. the semifluid substance of a cell that is external to the nuclear membrane and internal to the cellular membrane
- 4. is a rigid external covering on the body of some invertebrate animals, such as arthropods.
- 5. is fertilized egg cell that results from the union of a female gamete
- 7. it is the process in which plants (green) use sunlight to make their own food. It is necessary for life on Earth since without it there would be no green plants, therefore there would be no animals
- 10. is the spontaneous passage or diffusion of water or other solvents through a semipermeable membrane
- 11. is the biological (sexual o asexual) process by which new organisms - "offspring" - are produced.
- 13. is to name, describe and classify all living organisms such as plants and animals according to their similarities.