During which phase of growth are bacteria most resistant to antibiotics?

The log phase
The log phase is also the stage where bacteria are the most susceptible to the action of disinfectants and common antibiotics that affect protein, DNA, and cell-wall synthesis.

What is the lag phase in bacterial growth?

Lag phase. The lag phase is an adaptation period, where the bacteria are adjusting to their new conditions. The length of the lag phase can vary considerably, based on how different the conditions are from the conditions that the bacteria came from, as well as the condition of the bacterial cells themselves.

What are the 4 phases of bacterial growth?

Bacterial colonies progress through four phases of growth: the lag phase, the log phase, the stationary phase, and the death phase. The generation time, which varies among bacteria, is controlled by many environmental conditions and by the nature of the bacterial species.

What happens in log phase?

The log phase (sometimes called the logarithmic phase or the exponential phase) is a period characterized by cell doubling. If growth is not limited, doubling will continue at a constant rate so both the number of cells and the rate of population increase doubles with each consecutive time period.

During which phase of the bacterial growth curve does a bacterial population become much more resistant to harmful conditions quizlet?

During which phase of the bacterial growth curve does a bacterial population become much more resistant to harmful conditions? Lag phase — the “tooling-up” period during which cells synthesize DNA, amino acids, and enzymes necessary for cell growth.

In which phase of the bacterial cell cycle do the cells grow most quickly?

Log Phase
2. Log Phase (logarithmic or exponential phase) – cell numbers increase exponentially; during each generation time, the number of cells in the population increases by a factor of two). The number of microbes in an exponentially increasing population increases slowly at first, then extremely rapidly.

What is log and lag phase?

bacterial growth curve During this period, called the lag phase, the cells are metabolically active and increase only in cell size. This lag phase is the period when the bacteria are adjusting to the environment. Following the lag phase is the log phase, in which population grows in a logarithmic fashion.

During which phase does bacteria grow most rapidly?

Log Phase (logarithmic or exponential phase) – cell numbers increase exponentially; during each generation time, the number of cells in the population increases by a factor of two). The number of microbes in an exponentially increasing population increases slowly at first, then extremely rapidly.

What phase does the bacterial growth curve occur?

The bacterial growth curve represents the number of live cells in a bacterial population over a period of time. There are four distinct phases of the growth curve: lag, exponential (log), stationary, and death. The initial phase is the lag phase where bacteria are metabolically active but not dividing.

During which phase of a microbial growth curve is the population growing fastest quizlet?

There are four basic phases of growth: the lag, log, stationary, and death phases. During the log phase, the population-doubling time is fastest.

During which phase does growth occur at the fastest rate quizlet?

During this period, cells are dying at the same rate as news cells are being produced, so the population number stays the same. In death phase, more cells are dying than new cells are being produced, and the number of cells decreases rapidly. This is the phase of most rapid growth.