Origins: Chapter 4 Test

Front

What did the experiment on beef broth demonstrate about microorganisms?

Back

Microorganisms formed only in the flasks contaminated by dust.

Front

What is Oparin's theory about?

Back

Oparin's theory attempted to explain how spontaneous generation of the first cell could take place.

Front

In the experiment on rotten meat, where did maggots form?

Back

Maggots formed in the uncovered jars only.

Front

What was the one thing in Stanley Miller's experiment that was not present in nature?

Back

A trap.

Front

How did Francisco Redi help to disprove spontaneous generation?

Back

By showing that maggots could not arise spontaneously from rotten meat.

Front

What is spontaneous generation?

Back

The theory that living organisms can arise from non-living matter.

Front

What was the significance of Stanley Miller's experiment?

Back

It tested Oparin's theory by simulating early Earth conditions to create organic compounds.

Front

What role did dust play in the beef broth experiment?

Back

Dust was a source of contamination that allowed microorganisms to grow.

Front

What is biogenesis?

Back

The principle that living organisms arise from pre-existing living matter.

Front

What did Redi's experiment with jars and meat demonstrate?

Back

It demonstrated that maggots came from eggs laid by flies, not spontaneously from the meat.