Prokaryotes.txt

smallest and simplest cells--single celled organism that lacks a nucleus and other internal compartments..can't carry out many specialized functions Common type-BACTERIA

• 1. can exist in a broad range of environmental conditions
• 2. Can cause infection in humans grow and divide very rapidly
• 3. some do not need oxygen to survive…others need it
• 4. some make their own food
• 5. no internal structure to divide cell-enzymes and ribosomes are free to move around
• 6. Has a single DNA molecule-usually in the center of the cell
• 7. Does have a cell wall for structure and support but lack an internal supporting skeletal
• 8. Some have a capsule that allows them to cling to almost anything, including teeth, skin and food
• 9. Many have flagella-strong threadlike structures that protrude from the cell's surface for movement.

seen in simple prokaryote cells-strong threadlike structures that protrude from the cell's surface for movement.