| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.39 |
| Score | 0% | 68% |
Which of the following is a decomposer?
pine tree |
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fungi |
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ferret |
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mosquito |
Decomposers (saprotrophs) are organisms such as bacteria and fungi that break down the organic matter in the dead bodies of plants and animals into simple nutrients.
Meteoroids, meteors and meteorites are categorized based on which of the following?
their location |
|
their temperature |
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their size |
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their density |
Smaller rocks shed by asteroids and comets are called meteoroids. When these rocks reach Earth's atmosphere, they burn up in the mesosphere and become meteors. If a meteor manages to reach the Earth, it is called a meteorite.
A biological community of interacting organisms and their physical environment is known as:
community |
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population |
|
biome |
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ecosystem |
An ecosystem is a biological community of interacting organisms and their physical environment. This includes both the biotic (living) and abiotic (non-living).
In cell biology, where does DNA replication take place?
cytoplasm |
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mitochondria |
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Golgi apparatus |
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nucleus |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
Which of these is not a phase in cell division?
interphase |
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megaphase |
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cytokinesis |
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anaphase |
Cell division is the process by which cells replicate genetic material in the nucleus and consists of several phases, beginning with interphase and ending with cytokinesis.