ecology part 2

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Across
  1. 3. their genes are found on a large circular chromosomes in the area of the cellsome prokaryotes secrete a layer of polysaccharides around the cell wall
  2. 4. cells that cannot synthesize thier own food and must take in nurirents
  3. 5. some prokaryotes secrete a layer a polycaccrides around the cell wall
  4. 8. When environmental conditions are harsh some types of bacteria produce a structure called an
  5. 9. a nonliving strand of genetic material with a protein coat
  6. 11. are prokaryotic organisms that belong to domain bacteria
  7. 12. they carry out photosyntheis in a manner similar to plants
  8. 13. infection the virus that causes smallpox is what
  9. 14. a protein that can cause infection or disease is called a protienacoues infectoues partcile or
  10. 15. the outer layer of all virsus is made of proteins and is called a
  11. 17. cycle the viral dna inserts or intergrates ibto a chromosome in a host cell
  12. 20. cycle the host cell makes many copies of the viral rna or dna
Down
  1. 1. are changes or random errors in dna sequence
  2. 2. live in hot acidic enviorments including sulfur hot springs thermal vents on the ocean floors and around volcanoes
  3. 6. second type of bacteria are autotraphs that not require light for energy
  4. 7. prokaryotes do not use oxygen for growth or metbalism
  5. 10. some viruses have rna instead of dna fo their genetic material thois type of virus is called a
  6. 16. are submicroscopic hairlike structures that are made of protein
  7. 18. some prokaryotes form of reproduction called
  8. 19. fission is the division of a cell into two genetically identical cells