Scientific Crossword

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