| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.15 |
| Score | 0% | 63% |
In the metric system, what prefix represents 10-3?
mega |
|
centi |
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milli |
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kilo |
In the metric system, milli is the prefix for 10-3.
Veins carry blood __________ the heart.
away from |
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within |
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all of these |
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back to |
Veins carry blood back to the heart from the body. While arteries are thick-walled because they carry oxygenated blood at high pressure, veins are comparatively thin-walled as they carry low-pressure deoxygenated blood. Like the heart, veins contain valves to prevent blood backflow.
The large intestine does which of the following?
breaks down starches |
|
processes the physical waste produced by digestion |
|
breaks down proteins |
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breaks down fats |
The large intestine (colon) follows the small intestine and processes the physical waste produced by digestion, absorbing water and minerials that remain back into the body. Solid waste is then stored in the rectum while liquid waste is stored in the bladder.
In the classification of life, bacteria, archaea and eukaryota are which of the following?
species |
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kingdoms |
|
classes |
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domains |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.
In the heart, blood flows from the right __________ to the lungs then back to the heart via the left __________.
atrium, atrium |
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ventricle, atrium |
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ventricle, ventricle |
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atrium, ventricle |
The two largest veins in the body, the venae cavae, pass blood to the right ventricle which pumps the blood to the lungs through the pulmonary artery. Blood picks up oxygen in the lungs and returns it to the left atrium via the pulmonary vein.