Consider the Following Experiment

question 22

Multiple Choice

Consider the following experiment. First, large populations of two mutant strains of Escherichia coli are mixed, each requiring a different, single amino acid. After plating them onto a minimal medium, 45 colonies grew. Which of the following may explain this result?

• A) The colonies may be due to back mutation (reversion).
• B) The colonies may be due to recombination.
• C) Either A or B is possible.
• D) Neither A nor B is possible.

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Definitions:

Rehearsal Systems

Methods or techniques used to practice and improve memory retention.

Procedural Memories

Long-term memories of how to perform different actions and skills. Essentially, it involves memories of motor tasks and habits.

Declarative Memories

Memories that can be consciously recalled, such as facts and events, and can be verbally communicated.

Central Executive

A component of working memory model that is responsible for directing attention and coordinating cognitive processes.