| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.56 |
| Score | 0% | 71% |
Within DNA, a variety of a particular gene is called a(n):
chromosome |
|
homozygous |
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heterozygous |
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allele |
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.
Food is mixed with gastric acid and pepsin in the __________ to help break down protein.
small intestine |
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stomach |
|
mouth |
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large intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Large, puffy, mid-altitude clouds with a flat base and a rounded top describe which of the following?
cumulus clouds |
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cirrus clouds |
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fog |
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stratus clouds |
Cumulus clouds are large, puffy, mid-altitude clouds with a flat base and a rounded top. These clouds grow upward and can develop into a cumulonimbus or thunderstorm cloud.
This skeletal system is common in arthropods like insects, spiders, and crustaceans.
bone |
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endoskeleton |
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vertebrate |
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exoskeleton |
An exoskeleton (external skeleton) is common in arthropods like insects, spiders, and crustaceans.
Generally, an atom has __________ negative electrons orbiting the nucleus as it does positive protons inside.
more |
|
fewer |
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equal numbers of |
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double the number of |
An electron is a subatomic particle that orbits the nucleus of an atom. It carries a negative electric charge. Generally, an atom has the same number of negative electrons orbiting the nucleus as it does positive protons inside.