| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.24 |
| Score | 0% | 65% |
Which of the following is a decomposer?
pine tree |
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mosquito |
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fungi |
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ferret |
Decomposers (saprotrophs) are organisms such as bacteria and fungi that break down the organic matter in the dead bodies of plants and animals into simple nutrients.
The brain and spinal cord make up the __________ nervous system.
peripheral |
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autonomic |
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somatic |
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central |
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.
Absolute zero is which of the following?
the freezing point of oxygen |
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the freezing point of hydrogen |
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the coldest temperature possible in the universe |
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0°C |
In contrast to the Celsius scale (measured in degrees centigrade) that fixes 0° at the freezing point of water and the Fahrenheit scale that uses 32°, the Kelvin scale fixes 0 at absolute zero (-273°C) which is the lowest temperature possible in the universe.
In the food chain, omnivores may be which of the following?
primary or secondary consumers |
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secondary or tertiary consumers |
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secondary consumers or scavengers |
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primary or tertiary consumers |
Secondary or tertiary consumers may be omnivores.
Antigens in the blood determine:
blood oxygen capacity |
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Rh factor |
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negative or positive status |
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blood type |
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.