| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.16 |
| Score | 0% | 63% |
Velocity is the rate at which an object changes position. What is the formula for velocity?
\(\vec{v} = { \vec{d} \over t } \) |
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\(\vec{v} = { t \over \vec{d} } \) |
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none of these |
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\(\vec{v} = \vec{d}t \) |
Velocity is the rate at which an object changes position. Rate is measured in time and position is measured in displacement so the formula for velocity becomes \(\vec{v} = { \vec{d} \over t } \)
The __________ nervous system regulates involuntary activity in the heart, stomach, and intestines.
somatic |
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autonomic |
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central |
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peripheral |
Part of the peripheral nervous system, the autonomic nervous system regulates involuntary activity in the heart, stomach, and intestines.
What part of the food chain serves only as food for other organisms?
producers |
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secondary consumers |
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primary consumers |
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decomposers |
Producers (autotrophs) serve as a food source for other organisms. Typical producers are plants that can make their own food through photosynthesis and certain bacteria that are capable of converting inorganic substances into food through chemosynthesis
Blood is delivered to bodily tissues through:
arterioles |
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veins |
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plasma |
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capillaries |
The aorta is the body's largest artery and receives blood from the pulmonary vein via the left ventricle. From there, blood is circulated through the rest of the body through smaller arteries called arterioles that branch out from the heart. Finally, blood is delivered to bodily tissues through capillaries.
Which of the following is the narrowest classification of life?
family |
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domain |
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species |
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genus |
The narrowest classification of life, species, contains organisms that are so similar that they can only reproduce with others of the same species.