| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.43 |
| Score | 0% | 69% |
In the classification of life, which of the following is not a domain?
archaea |
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animalia |
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bacteria |
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eukaryota |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.
Which of the following is not a base unit in the metric system?
meter |
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liter |
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gram |
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degree Fahrenheit |
The Fahrenheit scale is used for measuring temperature in the British system. The metric system uses the Celsius scale.
A major difference between sound waves and light waves is which of the following?
a sound wave cannot travel through a vacuum |
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all of these are correct |
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a sound wave is mechanical while a light wave is electromagnetic |
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a sound wave is much slower than a light wave |
A vibrating object produces a sound wave that travels outwardly from the object through a medium (any liquid or solid matter). The vibration disturbs the particles in the surrounding medium, those particles disturb the particules next to them, and so on, as the sound propagates away from the vibration.
Which of Earth's layers has weather?
stratosphere |
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troposphere |
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thermosphere |
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mesosphere |
The Earth's atmosphere has several layers starting with the troposphere which is closest in proximity to the surface. Containing most of the Earth's breathable air (oxygen and nitrogen), it's a region with warmer temperatures closer to the surface and cooler temperatures farther away which results in the rising and falling air that generates weather.
In cell biology, where does DNA replication take place?
Golgi apparatus |
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mitochondria |
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cytoplasm |
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nucleus |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.