| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.16 |
| Score | 0% | 63% |
In the metric system, what prefix represents 103?
kilo |
|
centi |
|
mega |
|
milli |
Kilo is the metric system prefix for 103.
The __________ nervous system controls voluntary actions.
central |
|
peripheral |
|
autonomic |
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somatic |
Part of the peripheral nervous system, the somatic nervous system is made up of nerve fibers that send sensory information to the central nervous system and control voluntary actions.
Which of the following is not a medium for sound waves?
liquid |
|
vacuum |
|
none of these is a medium for sound waves |
|
solid |
A vibrating object produces a sound wave that travels outwardly from the object through a medium (any liquid or solid matter). The vibration disturbs the particles in the surrounding medium, those particles disturb the particules next to them, and so on, as the sound propagates away from the vibration.
The respiratory and circulatory systems are similar in that they:
deoxygenate blood |
|
transport nutrients |
|
transport oxygen |
|
add carbon dioxide |
Like the respiratory system, the circulatory system serves to transport oxygen throughout the body while removing carbon dioxide. In addition, the circulatory system transports nutrients from the digestive system.
I biome is made up of naturally occurring flora and fauna. Fauna is which of the following?
animals |
|
habitats |
|
plants |
|
minerals |
A biome is a large naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat (home or environment).