Cells: Prokaryotes and Eukaryotes

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Anonymous
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192949
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Cells: Prokaryotes and Eukaryotes
Updated:
2013-01-15 11:38:58
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Biology
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Advanced Higher Biology - Unit One - Cells: Prokaryotes and Eukaryotes
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  1. What are the basic units of life?
    Cells
  2. What are the two main types of cells?
    • Prokaryotes (bacteria and archaea)
    • Eukaryotes (protoists, fungi, plants and animals)
  3. Which type of cell contains a nucleus?
    Eukaryotes
  4. Describe the nucleus of a eukaryotic cell
    Eukaryotes have a nucleus with a double layer nuclear membrane (envelope) with pores in it to allow large molecules through
  5. The genetic material in the nucleus of a eukaryotic cell is ______ DNA?
    linear
  6. What is the linear DNA in eukaryotic cells wrapped around?
    Histone proteins
  7. When linear DNA wrapps around histone proteins it forms a...?
    Nucleosome
  8. DNA + histones = a material called...?
    chromatin
  9. What does cromatin form when it condenses?
    Chromosomes
  10. In Eukaryotes, organelles inside the cell are separated by...?
    endomembranes
  11. What organelle is involved in mechanical support of the cell and transport of cellular components or organelles?
    Cytoskeleton
  12. What organelles are in plant cells but not animal cells?
    • Cell wall
    • Chloroplasts
    • Central vacuole
    • Plasmodesmata
    • Middle lamella
  13. What organelles are in animal cells but not plant cells?
    • Centriole
    • Cillia
    • Flagella
    • Microvilli
  14. How is genetic material stored in prokaryotic cells?
    Prokaryotes have a single circular piece of DNA which is consdensed to take up an area called the nucleoid in the cytoplasm (they do also have other smaller pieces of circular DNA called plasmids)
  15. Do prokaryotes have membrane bound organelles?
    No
  16. Do prokaryotes have a cytoskeleton?
    No
  17. Do prokaryotes have ribosomes?
    Yes, they have small ribosomes similar in function to eukaryote ribosomes
  18. Where does metabolism occur in prokaryotes?
    In the cytoplasm
  19. What is a capsule?
    An extra layer of polysaccharide which helps protect the bacterium
  20. What is the bacteria cell wall made up of?
    Peptidoglycan
  21. What do pili do?
    Pili help the cell attach to surfaces.  They also help exchange plasmids between bacteria
  22. What are flagella used in?
    Locomotion

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