61.  A change in one partner in a close relationship that leads to a change in the other partner is  
A.  Symbiosis
B.  Coevolution
C.  Antibiosis
D.  Mutualism
E.  Synergism

62.  The time interval from parent cell to two new daughter cells is called the  
A.  Binary fission
B.  Growth curve
C.  Generation time
D.  Death phase
E.  Culture time

63.  The phase of the bacterial growth curve in which the rate of multiplication equals the rate of cell death is the  
A.  Lag phase
B.  Log phase
C.  Stationary phase
D.  Death phase
E.  Telophase

64.  The phase of the bacterial growth curve in which newly inoculated cells are adjusting to their new environment, metabolizing but not growing is the  
A.  Lag phase
B.  Log phase
C.  Stationary phase
D.  Death phase
E.  Prophase

65.  The phase of the bacterial growth curve that shows the maximum rate of cell division is the  
A.  Lag phase
B.  Log phase
C.  Stationary phase
D.  Death phase
E.  Prophase

66.  In the viable plate count method, a measured sample of a culture is evenly spread across an agar surface and incubated. Each _____ represents one _____ from the sample.  
A.  Cell, cell
B.  Cell, colony
C.  Colony, cell
D.  Species, colony
E.  Generation, cell

67.  When it is important to count the number of cells, determine cell size and differentiate between dead and live cells a ___ is used.  
A.  coulter counter
B.  flow cytometer
C.  SEM
D.  methylene dye indicator
E.  plate count