| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.33 |
| Score | 0% | 67% |
In cell biology, where does DNA replication take place?
cytoplasm |
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mitochondria |
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nucleus |
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Golgi apparatus |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
In cell biology, the primary difference between anaerobic and aerobic respiration is that aerobic respiration requires:
water |
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mitochondria |
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sugar |
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oxygen |
Some plant cells produce their own energy through photosynthesis which is the process by which sunlight, carbon dioxide, and water react to make sugar and oxygen. Animal cells cannot produce their own energy and, instead, generate energy when mitochondria consume outside sugar and oxygen through aerobic respiration.
Which of the following describes the Earth's mantle?
dense |
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makes up most of Earth's volume |
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all of these |
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hot |
Mantle makes up 84% of the Earth's volume and has an average thickness of approximately 1,800 miles (2,900 km). It is dense, hot, and primarily solid although in places it behaves more like a viscous fluid as the plates of the upper mantle and crust gradually "float" along its circumference.
Which of the following is not one of the outer planets?
Uranus |
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Neptune |
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Venus |
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Jupiter |
In contrast to the solid terrestrial planets, the outer planets (Jupiter, Saturn, Uranus, and Neptune) consist of hydrogen and helium gas and water.
Which of the following would be found on a reflecting telescope?
concave mirror |
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convex lens |
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concave lens |
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convex mirror |
A concave (or converging) mirror bulges inward and focuses reflected light on the mirror's focal point where the mirror's angles of incidence converge. In contrast, a convex (or diverging) mirror bulges outward and diffuses the light waves that strike it. A common use of a concave mirror is in a reflecting telescope, a common use of a convex mirror is in the side view mirror of a car.