| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.13 |
| Score | 0% | 63% |
A subatomic particle found in the nucleus of an atom. It carries a positive electric charge. This desribes which of the following?
electron |
|
atom |
|
neutron |
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proton |
A proton is a subatomic particle found in the nucleus of an atom. It carries a positive electric charge.
Arteries carry __________ blood at __________ pressure.
deoxygenated, high |
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oxygenated, high |
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oxygenated, low |
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deoxygenated, low |
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 rows of the Periodic Table of the Elements are called:
shells |
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periods |
|
families |
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groups |
The rows of the Periodic Table are called periods and contain elements that have the same number of electron shells ordered from lower to higher atomic number.
An asteroid belt holds many of the asteroids in our solar system. It is located between the orbits of which planets?
Mercury and Venus |
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Mars and Jupiter |
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Jupiter and Saturn |
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Mars and Earth |
The solar system also contains over a million rocky fragments of at least 1km in diameter called asteroids as well as millions more with smaller diameters. Many of these asteroids are an asteroid belt between the orbits of Mars and Jupiter.
Which of these does not contain oxygenated blood?
pulmonary vein |
|
left ventricle |
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right atrium |
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aorta |
To provide oxygen to the body, blood flows through the heart in a path formed by the right atrium → right ventricle → lungs → left atrium → left ventricle → body. When blood enters the right side of the heart it is deoxygenated. It enters the left side of the heart oxygenated after traveling to the lungs.