Across
- 4. molecule is defined as an electrically neutral group of at least two atoms in a definite arrangement held together.
- 5. matter from which a thing is or can be made.
- 7. strong, hard, magnetic, silvery-gray metal, the chemical element of atomic number 26.
- 8. thing that is composed of two or more separate elements; a mixture.
- 9. acid, a self-replicating material present in nearly all living organisms as the main constituent of chromosomes.
- 10. salt or ester of phosphoric acid, containing PO43− or a related anion or a group such as OPO(OH)2.
- 11. part or aspect of something.
- 12. study of living organisms, divided into many specialized fields.
- 13. a structural and functional units of all living organisms.
- 14. intellectual and practical activity encompassing the systematic study of the structure and behavior of the physical and natural.
Down
- 1. the branch of biology concerned with the relations between organisms and their environment.
- 2. colorless, odorless gas, CO2, produced by burning carbon and organic compounds and by respiration and absorbed by plants.
- 3. acid, a self-replicating material present in nearly all living organisms as the main constituent of chromosomes
- 6. unit of heredity that is transferred from a parent to offspring.