| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.89 |
| Score | 0% | 58% |
Stratus clouds are __________clouds characterized by horizontal layering with a broad flat base.
mid-altitude |
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low-altitude |
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all-altitude |
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high-altitude |
Clouds are categorized based on their shape, size, and altitude. Stratus clouds are low-altitude clouds characterized by horizontal layering with a broad flat base. When stratus clouds occur on the ground the result is fog.
In cell biology, where does DNA replication take place?
Golgi apparatus |
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cytoplasm |
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mitochondria |
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nucleus |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
In the water cycle, infiltration is most closely related to:
runoff |
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rivers |
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oceans |
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water table |
The water then accumulates as runoff and eventually returns to bodies of water or is absorbed into the Earth (infiltration) and becomes part of the water table, an underground resevoir of fresh water.
"The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object." This describes which of Newton's laws of motion?
third |
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second |
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fourth |
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first |
Newton's second law of motion states that The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. This law basically means that the greater the mass of an object, the more force is needed to overcome its inertia.
Within DNA, a variety of a particular gene is called a(n):
heterozygous |
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allele |
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chromosome |
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homozygous |
The gene is the base unit of inheritance and is contained within DNA. A gene may come in several varieties (alleles) and there are a pair of alleles for every gene. If the alleles are alike, a person is homozygous for that gene. If the alleles are different, heterozygous.