Scientists May Be on the Verge of Creating Life in a Test

question 141

Multiple Choice

Scientists may be on the verge of creating life in a test tube. Recently, scientists have used computers to synthesize a highly complex loop of DNA. When this loop was inserted into an empty bacterial cell, the cell began to self-replicate. And self-replication is an essential feature of life.

• A) Argument; conclusion: When this loop was inserted ... began to self-replicate.
• B) Argument; conclusion: Recently, scientists have used computers ... loop of DNA.
• C) Nonargument.
• D) Argument; conclusion: Scientists may be on the verge ... life in a test tube.
• E) Argument; conclusion: And self-replication is an essential feature of life.

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Definitions:

Variable Ratio

In operant conditioning, a reinforcement schedule that rewards a response after an unpredictable number of responses, making it very effective for maintaining strong and steady response rates.

Negative Punishment

A behavioral psychology term where the removal of a desirable stimulus occurs after a behavior, leading to a decrease in that behavior.

Aggressive Behavior

Refers to actions or attitudes that can lead to hostility or attacks on others, often stemming from anger or frustration.

Modeling

A method of learning that involves observing and mimicking the behavior of others.