| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.45 |
| Score | 0% | 69% |
As part of digestion, the liver produces bile which breaks down:
sugars |
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protein |
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starches |
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fat |
The liver produces bile which emulsifies (separates) fat.
Acceleration is the rate of change of velocity per unit of time. Which of these is the formula for acceleration?
\(\vec{a} = { t \over \Delta \vec{v} }\) |
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\(\vec{a} = \Delta \vec{v} t \) |
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\(\vec{a} = { \vec{v} \over t }\) |
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\(\vec{a} = { \Delta \vec{v} \over t }\) |
Acceleration is the rate of change of velocity per unit of time. In physics, the delta symbol (\(\Delta\)) represents change so the formula for acceleration becomes \(\vec{a} = { \Delta \vec{v} \over t }\)
Earth's troposphere layer is which of the following?
closest to the surface |
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coldest |
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farthest from the surface |
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hottest |
The Earth's atmosphere has several layers starting with the troposphere which is closest in proximity to the surface. Containing most of the Earth's breathable air (oxygen and nitrogen), it's a region with warmer temperatures closer to the surface and cooler temperatures farther away which results in the rising and falling air that generates weather.
Which of the following is not one of the outer planets?
Uranus |
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Venus |
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Neptune |
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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.
Food is mixed with gastric acid and pepsin in the __________ to help break down protein.
small intestine |
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mouth |
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stomach |
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large intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.