The D-Value of a Bacterial Culture Heated to 100°C Is

question 9

Multiple Choice

The D-value of a bacterial culture heated to 100°C is the time it takes to kill ________% of the population.

• A) 99
• B) 90
• C) 50
• D) 10
• E) 1

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Definitions:

Internal Validity

The degree to which an experiment accurately shows that changes in the independent variable caused any observed changes in the dependent variable, minimizing confounding factors.

Demand Characteristics

Psychological experiment artifacts where participants form an interpretation of the study's purpose and unconsciously change their behavior to fit that interpretation.

Experimental Conditions

The controlled environments or set of procedures in scientific research designed to test hypotheses under standardized settings.

Randomly Assigned

A research method where study participants are allocated to different groups on a chance basis, ensuring that each participant has an equal opportunity to be assigned to any given group.