| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.11 |
| Score | 0% | 62% |
When compared to eukaryotic cells, prokaryotic cells are:
similarly complex |
|
none of these |
|
more 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.
Regulation of heart rhythm occurs in:
nerves |
|
cerebellum |
|
medulla |
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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.
Which of these foods should a person with high cholesterol avoid?
olive oil |
|
eggs |
|
vegetable oils |
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avocados |
Fats come in three types, saturated (meats, shellfish, eggs, milk), monounsaturated (olives, almonds, avocados), and polyunsaturated (vegetable oils). Saturated fats can raise LDL ("bad") cholesterol while unsaturated fats can decrease it.
Which of the following states of matter exists at the highest temperature?
gas |
|
solid |
|
none of these |
|
liquid |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
In fermentation, what replaces oxygen in anaerobic respiration?
water |
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starches |
|
ascorbic acid or peptides |
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lactic acid or alcohol |
If no oxygen is present, cellular respiration is anaerobic and will result in fermentation where either lactic acid or alcohol is used instead of oxygen.