| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.77 |
| Score | 0% | 75% |
Which of the following states of matter exists at the lowest temperature?
liquid |
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gas |
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solid |
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none of these |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
What part of the food chain serves only as food for other organisms?
producers |
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decomposers |
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secondary consumers |
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primary consumers |
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
Leafy vegetables, beans, potatoes, fruits, and whole grains are good sources of:
protein |
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unsaturated fat |
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fiber |
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saturated fat |
Fiber provides bulk to help the large intestine carry away waste. Good sources of fiber are leafy vegetables, beans, potatoes, fruits, and whole grains.
Scavengers break down the dead bodies of plants and animals into which of the following?
simple nutrients |
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complex carbohydrates |
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producers |
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carrion |
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.
The brain and spinal cord make up the __________ nervous system.
somatic |
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central |
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autonomic |
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peripheral |
The nervous system consists of the brain and spinal cord (central nervous system) and the peripheral nervous system which is the network of nerve cells (neurons) that collect and distribute signals from the central nervous system throughout the body.