Various Techniques Have Been Developed to Isolate Strains of Bacteria

question 58

Multiple Choice

Various techniques have been developed to isolate strains of bacteria carrying a particular mutation.One of them is,bacteria containing wild-type cells and cells of a desired mutant are grown on a medium lacking the nutrient for which the desired mutants are auxotrophic but containing an antibiotic that only kills growing cells.In this environment,

• A)both wild-type and mutant cells are killed.
• B)both wild-type and mutant cells survive.
• C)wild-type cells survive; mutant cells die.
• D)wild-type cells die; mutant cells survive.
• E)only double mutants survive.

Recognize the role of biological and experiential factors in development.

Identify the influence of the sociocultural context on child development.

Understand Freud's psychoanalytical theory including the structure of the personality.

Differentiate between various psychological perspectives such as constructivist, behaviorist, psychodynamic, and sociocultural.