| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.20 |
| Score | 0% | 64% |
In cell biology, where does DNA replication take place?
mitochondria |
|
Golgi apparatus |
|
nucleus |
|
cytoplasm |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
Elements in the Periodic Table of the Elements are ordered by which of the following?
atomic mass |
|
number of electron shells |
|
atomic number |
|
atomic weight |
The Periodic Table of the Elements categorizes elements primarily by the number of protons in their nucleus (atomic number) and secondarily by the characteristics they exhibit.
Water freezing or boiling is an example of which of the following?
heating |
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sublimation |
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cooling |
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phase transition |
A substance undergoes a phase transition when it moves from one state of matter to another, for example, when water freezes or boils.
When the clouds become too saturated with water, the water is released as precipitation in the form of:
rain |
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snow |
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snow or ice |
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ice |
Rising into the atmosphere, the water condenses into clouds. When the clouds become too saturated with water, the water is released as snow or ice precipitation which may warm as it falls to reach Earth as rain.
The four planets closest to the Sun are called terrestrial. What does terrestrial mean?
the planets have water |
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the planets have magnetic fields |
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the planets have moons |
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the planets are Earth-like |
The four planets closest to the Sun (Mercury, Venus, Earth, and Mars) are called terrestrial (Earth-like) planets because, like the Earth, they're solid with inner metal cores covered by rocky surfaces.