| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.46 |
| Score | 0% | 69% |
When compared to eukaryotic cells, prokaryotic cells are:
none of these |
|
more complex |
|
similarly complex |
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less complex |
Cells are classified into one of two groups based on whether or not they have a nucleus. Eukaryotic cells have a nucleus, prokaryotic cells do not have a nucleus and therefore have a less complex structure than eukaryotic cells.
What part of the nervous system controls simple reflexes?
medulla |
|
autonomic |
|
spinal cord |
|
cerebrum |
The spinal cord connects the brain to the body's network of nerves. It carries impulses between all organs and the brain and controls simple reflexes.
Water freezing or boiling is an example of which of the following?
phase transition |
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heating |
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sublimation |
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cooling |
A substance undergoes a phase transition when it moves from one state of matter to another, for example, when water freezes or boils.
A large naturally occurring community of flora and fauna occupying a major habitat is:
a biome |
|
a food chain |
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a community |
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a population |
A biome is a large naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat (home or environment).
Food is mixed with gastric acid and pepsin in the __________ to help break down protein.
small intestine |
|
large intestine |
|
stomach |
|
mouth |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.