| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.66 |
| Score | 0% | 73% |
In cell biology, what part of the cell contains organelles?
cell membrane |
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cytoplasm |
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nucleus |
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cell wall |
The nucleus of a eukaryotic cell contains the genetic material of the cell and is surrounded by cytoplasm which contains many organelles.
Leafy vegetables, beans, potatoes, fruits, and whole grains are good sources of:
unsaturated fat |
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protein |
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saturated fat |
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fiber |
Fiber provides bulk to help the large intestine carry away waste. Good sources of fiber are leafy vegetables, beans, potatoes, fruits, and whole grains.
This skeletal system is common in arthropods like insects, spiders, and crustaceans.
vertebrate |
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endoskeleton |
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exoskeleton |
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bone |
An exoskeleton (external skeleton) is common in arthropods like insects, spiders, and crustaceans.
The envelope of gases surrounding the planet is called the:
lithosphere |
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geosphere |
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atmosphere |
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hydrosphere |
The biosphere is the global ecological system integrating all living beings and their relationships. This includes their interactions with the lithosphere (the rigid outer part of the earth, consisting of the crust and upper mantle), hydrosphere (all surface water), and atmosphere (the envelope of gases surrounding the planet).
Regulation of heart rhythm occurs in:
medulla |
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nerves |
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cerebellum |
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cerebrum |
Part of the brainstem, the medulla is the connection between the brain and the spinal cord. It controls involuntary actions like breathing, swallowing, and heartbeat.