| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.06 |
| Score | 0% | 61% |
Scalar quantities are fully described by which of the following?
a magnitude and a direction |
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a magnitude only |
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a direction only |
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a magnitude and a polarity |
Velocity and displacement are vector quantities which means each is fully described by both a magnitude and a direction. In contrast, scalar quantities are quantities that are fully described by a magnitude only. A variable indicating a vector quantity will often be shown with an arrow symbol: \(\vec{v}\)
Scavengers break down the dead bodies of plants and animals into which of the following?
complex carbohydrates |
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simple nutrients |
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carrion |
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producers |
Like decomposers, scavengers also break down the dead bodies of plants and animals into simple nutrients. The difference is that scavengers operate on much larger refuse and dead animals (carrion). Decomposers then consume the much smaller particles left over by the scavengers.
Large, puffy, mid-altitude clouds with a flat base and a rounded top describe which of the following?
cumulus clouds |
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stratus clouds |
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cirrus clouds |
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fog |
Cumulus clouds are large, puffy, mid-altitude clouds with a flat base and a rounded top. These clouds grow upward and can develop into a cumulonimbus or thunderstorm cloud.
As part of digestion, the liver produces bile which breaks down:
sugars |
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starches |
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protein |
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fat |
The liver produces bile which emulsifies (separates) fat.
The Rh factor antigen in blood determines:
universal donor status |
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blood type |
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postive or negative |
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universal recipient status |
Blood is categorized into four different types (A, B, AB, and O) based on the type of antigens found on the outside of the red blood cells. Additionally, each type can be negative or positive based on whether or not the cells have an antigen called the Rh factor.