Biology

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 5. Free-living or colonial organisms with diverse nutritional and reproductive modes (plural) (8)
  2. 7. A virus that is parasitic in ___ (13)
  3. 10. The protoplasm of a cell excluding the nucleus (9)
  4. 11. The diploid cell resulting from the union of a haploid spermatozoon and ovum (6)
  5. 12. Having the same evolutionary origin but not necessarily the same function (10)
  6. 13. An allele that produces its characteristic phenotype only when its paired allele is identical (9)
  7. 15. Any of several complex proteins that are produced by cells and act as catalysts in specific (6)
  8. 16. A segment of DNA that is involved in producing a polypeptide chain (4)

Down

  1. 1. Immunogen consisting of a suspension of weakened or dead pathogenic cells injected in order (7)
  2. 2. The process in which there is movement of a substance from an area of high concentration of (9)
  3. 3. Having the same or equal osmotic pressure (8)
  4. 4. A unicellular organism having cells lacking membrane-bound nuclei (10)
  5. 6. The marked and rapid transformation of a larva into an adult that occurs in some animals (10)
  6. 8. A metabolic process that breaks down carbohydrates and sugars through a series of reactions (10)
  7. 9. A person who is almost identical to another (5)
  8. 14. The power to do work or make things move (6)