| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.05 |
| Score | 0% | 61% |
During digestion, the kidneys filter substances from the blood. Which of the following is not filtered by the kidneys?
water |
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salt |
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fats |
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minerals |
Chemical waste like excess water, minerals, and salt are filtered from the blood by the kidneys and secreted into the urine. Urine is transported from the kidneys to the bladder through ureters.
In the food chain, omnivores may be which of the following?
primary or tertiary consumers |
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secondary or tertiary consumers |
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primary or secondary consumers |
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secondary consumers or scavengers |
Secondary or tertiary consumers may be omnivores.
Elements in the same group in the Periodic Table of the Elements have the same:
number of electron shells |
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number of electrons in their outer electron shell |
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number of electrons |
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number of atomic mass units |
The columns of the Periodic Table are called groups and all elements in a group have the same number of electrons in their outer electron shell. The group that an element occupies generally determines its chemical properties as the number of outer shell electrons establishes the way it reacts with other elements to form molecules. So, because each element has the same number of electrons in its outer shell, each has similar reactivity.
Which of the following is not one of the outer planets?
Jupiter |
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Uranus |
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Venus |
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Neptune |
In contrast to the solid terrestrial planets, the outer planets (Jupiter, Saturn, Uranus, and Neptune) consist of hydrogen and helium gas and water.
Which of the following is not true of light waves?
can travel through a vacuum |
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are electromagnetic waves |
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are mechanical waves |
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travel faster than sound waves |
Unlike mechanical sound waves that require a physical medium for propagation, light waves are electromagnetic and can travel through empty space. Light waves are also much faster, travelling at 186,000 m/s vs. 343 m/s for sound waves.