Bio 2

Question 1

What are the three domains

Answer 1

Bacteria, archaea, and eukarya

Question 2

Bacteria and archaea are

Answer 2

Prokaryotic: lack organelles bound by a membrane

Question 3

Domain Eukarya

Answer 3

Kingdoms: Protista, fungi, plantae, and animalia

And are eukaryotes

Question 4

Characteristics of Prokaryotes

Answer 4

Features: unicellular, diversity of shapes, average size 1-10 um (microscope)

Organelles: no nucleus, few membrane- bound organelle, no cytoskeleton, cell wall are gram- positive and gram- negative.

Question 5

Gram- negative bacteria

Answer 5

Cell walls have a thin layer of peptidoglycan & has an extra layer of lipids on the outside
- stain colour: red or pink

Question 6

Gram- positive bacteria

Answer 6

Thick layer of peotidoglycan complex in cell walls and single layer of lipids
- stain colour: purple

Question 7

Kingdoms archaebacteria

Answer 7

Contain DNA

- another chromosome called plasmid

Question 8

Chromosome

Answer 8

General chromosomal control and form all the normal function

Question 9

Plasmid

Answer 9

Protects the bacteria, special defense material

Question 10

Domain Archaea

Answer 10

• found in harsh environments (undersea, volcano, hot springs)
• cell without peotidoglycon
• has three group:
  Methanogens
  Thermoacidophiles
  Extreme halophiles

Question 11

Methanogens

Answer 11

• live in anatomical environment (no oxygen)
• obtain energy by changing H2 and a CO2 gas into methane gas
• found in swamps digestive track on animals
• Break down cellulos for herbivores
• produce marsh gas

Question 12

Extreme Halophiles

Answer 12

• Love salt, live in very salty water (to make energy)
• found in the dead sea, great salt lake etc.
• generate ATP

Question 13

Thermoacidophiles

Answer 13

• Live in extremely hot and acidic water

- sounded hot spring, the kainic then and in cracks on the ocean floor

Question 14

Domain

Answer 14

Broadest taxonomic group