| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.35 |
| Score | 0% | 67% |
Traits represented by genes may be which of the following?
all of these |
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expressed |
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dominant |
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recessive |
The traits represented by genes are inherited independently of each other (one from the male and one from the female gamete) and a trait can be dominant or recessive. A dominant trait will be expressed when paired with a recessive trait while two copies of a recessive trait (one from each parent) must be present for the recessive trait to be expressed.
In cell biology, where does DNA replication take place?
cytoplasm |
|
Golgi apparatus |
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nucleus |
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mitochondria |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
In the metric system, what prefix represents 103?
centi |
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milli |
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mega |
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kilo |
Kilo is the metric system prefix for 103.
The rows of the Periodic Table of the Elements are called:
families |
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periods |
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shells |
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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.
As a cold front moves into an area, the heavier cool air __________ the lighter warm air that it is replacing.
cancels out |
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pushes above |
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pushes under |
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mixes with |
A cold front is a warm-cold air boundary with the colder air replacing the warmer. As a cold front moves into an area, the heavier cool air pushes under the lighter warm air that it is replacing. The warm air becomes cooler as it rises and, if the rising air is humid enough, the water vapor it contains will condense into clouds and precipitation may fall.