| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.63 |
| Score | 0% | 73% |
Blood pressure is generally highest in which of the following?
arteries |
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capillaries |
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heart |
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veins |
Arteries are thick-walled because they carry oxygenated blood at high pressure, veins are comparatively thin-walled as they carry low-pressure deoxygenated blood.
An air mass is a large body of air that has which of the following characteristics?
all of these |
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similar density |
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similar temperature |
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similar moisture |
An air mass is a large body of air that has similar moisture (density) and temperature characteristics. A front is a transition zone between two air masses.
A large naturally occurring community of flora and fauna occupying a major habitat is:
a community |
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a food chain |
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a population |
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a biome |
A biome is a large naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat (home or environment).
An element in the physical state of __________ maintains a constant volume and shape.
liquid |
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gel |
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solid |
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gas |
An element in a solid state has atoms or molecules that are constricted and do not move freely. Solids maintain a constant volume and shape and exist at a lower temperature than liquids or gases.
Someone who has Rh-factor __________ blood cannot receive blood with a __________ type.
antigen, negative |
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positive, antigen |
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positive, negative |
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negative, positive |
Blood transfer is limited by the type and Rh factor of the blood. Someone who has Rh-factor negative blood cannot receive blood with a positive type but a person with Rh-factor positive type blood can receive Rh-negative blood. Type O negative blood is the universal donor because it can be given to a person with any blood type. Type AB positive is the universal recipient meaning someone with this blood type can receive any other type of blood.