| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.03 |
| Score | 0% | 61% |
As part of the carbon cycle, plants release carbon into the atmosphere through which process?
sedimentation |
|
decomposition |
|
photosynthesis |
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evaporation |
The carbon cycle represents the ciruit of carbon through Earth's ecosystem. Carbon dioxide (CO2) in the atmosphere is absorbed by plants through photosynthesis. Plants then die and release carbon back into the atmosphere during decomposition or are eaten by animals who breathe (respiration) the carbon into the atmosphere they exhale and produce waste which also releases carbon as it decays.
Poor balance could indicate an issue with which part of the nervous system?
cerebrum |
|
medulla |
|
cerebellum |
|
spinal cord |
The cerebellum is a large cluster of nerves at the base of the brain that's responsible for balance, movement, and muscle coordination.
What part of the brain is responsible for for balance, movement, and muscle coordination?
brainstem |
|
cerebrum |
|
cerebellum |
|
medulla |
The cerebellum is a large cluster of nerves at the base of the brain that's responsible for balance, movement, and muscle coordination.
In cell biology, where does DNA replication take place?
mitochondria |
|
nucleus |
|
Golgi apparatus |
|
cytoplasm |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
Which of the following is not a medium for sound waves?
none of these is a medium for sound waves |
|
vacuum |
|
liquid |
|
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.