Once the bacteria reach the stationary phase , it stops to grow due to loss of nutrient availability. Even when some bacteria are transferred to fresh medium, no cell growth is seen, since the bacteria as lost its viability to grow. Yet, some microbiologists suggest that the bacteria are temporarily unable to grow. The microbiologists suggest two hypotheses (Viable but nonculturable and programmed cell death) to for this condition of the bacteria.

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Definition Definition Phase during which the number of bacteria cell deaths gradually equals the number of viable or actively dividing cells due to decreased reproduction rate. Microbes utilize all nutrients present in the growth medium to multiply during the growth of the bacterial population, which results in the deposition of waste matter, toxins, and inhibitory compounds in the media. This changes media conditions, such as temperature and pH, creating an unfavorable environment for bacterial growth. Here, the growth rate becomes stabilized.

Chapter 29.1, Problem 1RIA

Summary Introduction

Once the bacteria reach the stationary phase, it stops to grow due to loss of nutrient availability. Even when some bacteria are transferred to fresh medium, no cell growth is seen, since the bacteria as lost its viability to grow. Yet, some microbiologists suggest that the bacteria are temporarily unable to grow. The microbiologists suggest two hypotheses (Viable but nonculturable and programmed cell death) to for this condition of the bacteria.

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Q8. A researcher wants to study the effectiveness of a pill intended to reduce stomach heartburn in pregnant women. The researcher chooses randomly 400 women to participate in this experiment for 9 months of their pregnancy period. They all need to have the same diet. The researcher designs two groups of 200 participants: One group take the real medication intended to reduce heartburn, while the other group take placebo medication. In this study what are: Independent variable: Dependent variable: Control variable: Experimental group: " Control group: If the participants do not know who is consuming the real pills and who is consuming the sugar pills. This study is It happens that 40% of the participants do not find the treatment helpful and drop out after 6 months. The researcher throws out the data from subjects that drop out. What type of bias is there in this study? If the company who makes the medication funds this research, what type of bias might exist in this research work?

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Definition Definition Phase during which the number of bacteria cell deaths gradually equals the number of viable or actively dividing cells due to decreased reproduction rate. Microbes utilize all nutrients present in the growth medium to multiply during the growth of the bacterial population, which results in the deposition of waste matter, toxins, and inhibitory compounds in the media. This changes media conditions, such as temperature and pH, creating an unfavorable environment for bacterial growth. Here, the growth rate becomes stabilized.

Chapter 29.1, Problem 1RIA

Summary Introduction

Once the bacteria reach the stationary phase, it stops to grow due to loss of nutrient availability. Even when some bacteria are transferred to fresh medium, no cell growth is seen, since the bacteria as lost its viability to grow. Yet, some microbiologists suggest that the bacteria are temporarily unable to grow. The microbiologists suggest two hypotheses (Viable but nonculturable and programmed cell death) to for this condition of the bacteria.

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Answer 3

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Definition Definition Phase during which the number of bacteria cell deaths gradually equals the number of viable or actively dividing cells due to decreased reproduction rate. Microbes utilize all nutrients present in the growth medium to multiply during the growth of the bacterial population, which results in the deposition of waste matter, toxins, and inhibitory compounds in the media. This changes media conditions, such as temperature and pH, creating an unfavorable environment for bacterial growth. Here, the growth rate becomes stabilized.

Chapter 29.1, Problem 1RIA

Summary Introduction

Once the bacteria reach the stationary phase, it stops to grow due to loss of nutrient availability. Even when some bacteria are transferred to fresh medium, no cell growth is seen, since the bacteria as lost its viability to grow. Yet, some microbiologists suggest that the bacteria are temporarily unable to grow. The microbiologists suggest two hypotheses (Viable but nonculturable and programmed cell death) to for this condition of the bacteria.

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Answer 4

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Definition Definition Phase during which the number of bacteria cell deaths gradually equals the number of viable or actively dividing cells due to decreased reproduction rate. Microbes utilize all nutrients present in the growth medium to multiply during the growth of the bacterial population, which results in the deposition of waste matter, toxins, and inhibitory compounds in the media. This changes media conditions, such as temperature and pH, creating an unfavorable environment for bacterial growth. Here, the growth rate becomes stabilized.

Chapter 29.1, Problem 1RIA

Summary Introduction