| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.87 |
| Score | 0% | 57% |
Which of the following states of matter exists at the lowest temperature?
liquid |
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solid |
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gas |
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none of these |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
Which of the following would you find in the side view mirror of a car?
convex lens |
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concave mirror |
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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.
In cell biology, where does DNA replication take place?
Golgi apparatus |
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nucleus |
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cytoplasm |
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mitochondria |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
In the food chain, omnivores may be which of the following?
primary or secondary consumers |
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secondary consumers or scavengers |
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secondary or tertiary consumers |
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primary or tertiary consumers |
Secondary or tertiary consumers may be omnivores.
A compound is a substance containing two or more different chemical elements bound together by what kind of bond?
covalent |
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molecular |
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chemical |
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ionic |
A compound is a substance containing two or more different chemical elements bound together by a chemical bond. In covalent compounds, electrons are shared between atoms. In ionic compounds, one atom borrows an electron from another atom resulting in two ions (electrically charged atoms) of opposite polarities that then become bonded electrostatically.