| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.98 |
| Score | 0% | 60% |
Herbivores are __________ that subsist on producers like plants and fungus.
primary consumers |
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scavengers |
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secondary consumers |
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tertiary consumers |
Primary consumers (herbivores) subsist on producers like plants and fungus. Examples are grasshoppers, cows, and plankton.
Which of the following is not true about mass and weight?
weight is the force exerted on an object by gravity |
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mass is the amount of matter something has |
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mass depends on the location where it is measured |
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weight depends on the location where it is measured |
Mass is the amount of matter something has while weight is the force exerted on an object's mass by gravity. So, although a person's mass doesn't change when going from the Earth to the Moon, their weight will decrease because the force of the Moon's gravity is much less than that of Earth.
The gravitational interaction of Earth and the Moon is responsible for which of these?
the northern lights |
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seasons |
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day and night cycle |
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tides |
Tides are caused by the gravitational interaction of Earth and the Moon.
The two heart chambers that collect blood are called:
valves |
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ventricles |
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atria |
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aorta |
The heart is the organ that drives the circulatory system. In humans, it consists of four chambers with two that collect blood called atria and two that pump blood called ventricles. The heart's valves prevent blood pumped out of the ventricles from flowing back into the heart.
DNA is encoded through a combination of which of the following?
gametes |
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genes |
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nucleotides |
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helix |
Deoxyribonucleic acid (DNA) is the molecule that contains genetic information. DNA is encoded through a combination of nucleotides that bind together in a specific double helix pattern.