Which is not right about the bacterial growth?
A. It means an increase in the size of a population of bacteria.
B. Division is the main event of growth.
Chromosomes are duplicated before division.
D. It means an increase in size of a bacterium cell.
查看答案
Which four phases happen in right order in the bacterial growth curve?
A. logarithmic, stationary, death phase, lag.
B. lag; logarithmic, stationary, death phase.
C. stationary, lag, logarithmic, death phase.
D. lag, stationary, logarithmic, death phase.
In which phase are the endospores produced by some bacteria?
A. lag,
B. stationary,
C. logarithmic,
D. death phase.
Which of the following is not the cause of cell death at death phase?
A. production of antibiotics;
B. toxic metabolites accumulation.
C. autolytic enzymes;
D. the nutrients exhaustion;
Which statement is not right at log phase?
A. The growth of 2n;
B. DNA and protein syntheses are maximized.
C. The growth rate reaches a constant;
D. No toxic metabolites produced.
微信支付 
支付宝支付